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1
GESUALDI, ALEXANDRE CHANTAL. "ENERGY SAVING IN AIR CONDITIONERS BY DIRECT LOAD CONTROL." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1999. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=1018@1.
Повний текст джерелаАнотація:
COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIORO objetivo principal desta dissertação é o de buscar formas de modelar e controlar, adequadamente, condicionadores de ar de janela, pois tratam-se de máquinas que possuem um elevado consumo de energia, perdendo somente para o chuveiro elétrico. A contribuição do mesmo para a demanda do setor doméstico é da ordem de 7 %. As pesquisas de posse de eletrodomésticos mostram que somente 6 % dos domicílios têm instalada tal tipo de máquina, o que representa um expressivo potencial de crescimento para os próximos anos na aquisição deste produto. É oportuno observar que em edifícios comerciais, 48 % da energia é consumida com refrigeração, o que implica na necessidade de novos projetos em que centrais de grande porte sejam implantadas, visando um gasto comparativamente menor ao somatório de aparelhos individuais.
This work involves the modeling of window air conditioners, with the purpose to obtain the electrical potential consume by itself, related to the medium external temperature. To obtain such goal, it was necessary the study of all features which involve their several components, aiming the conduct fitted from the parts, due to the result expected. It was made a public research with the users from these equipments. From this result, it was developed a stochastic model to be used in energy demand from a specific region, considering that the equipment / machine in use shows similar qualifications. After that, it was added to the system of machine a direct load control, which delay the compressor, obtaining an efficient working from it (saving demand), without affecting deeply normal using conditions. Finally, comparing two examples mentioned above, it was concluded that in the less powerful equipment (air conditioner) the thermal control with changed features, had good results, while more powerful equipments are more economic with direct load control.
Esta disertación tiene como objetivo principal buscar formas de modelar y controlar adecuadamente, equipos de aire acondicionado de tipo ventana, por tratarse de equipos que poseen un alto consumo de energía, superado tan solo por la ducha eléctrica. La contribución de éste para la demanda del sector doméstico es del orden de 7 %. Las investigaciones sobre la pose de electrodomésticos muestran que sólo el 6 % de los domicilios tiene instalada tal tipo de máquina, lo que representa um expresivo potencial de crescimiento en la adquisición de este producto para los próximos años. Es oportuno observar que en edificios comerciales, 48 % de la energia consumida se refiere a refrigeración, lo que nos lleva a la necesidad de nuevos proyectos donde, centrales de grande porte seam implantadas, para conseguir un gasto comparativamente menor a la suma de equipos individuales.
2
Bangalore, Mohan Kumar Veeresh. "Rate-and-Power Control Based Energy-Saving Transmissions in Multicarrier Base Stations Using Energy Adaptive Rate Control Algorithm." Thesis, California State University, Long Beach, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10839376.
Повний текст джерелаАнотація:
With the amazing increase in mobile data traffic, the fast-growing requirement for, and development of, green communication technology has led to many energy-saving designs in mobile networks. Meanwhile, as advanced cellular technologies progress, more than one component carrier (CC) can now be jointly utilized in a base station (BS).
As a result, the energy consumption of the base station (BS) has become an important concern. In this research, a novel green rate-and-power control transmission scheme is studied and implemented at the BS transmission. The purpose of this scheme is to address the problem of energy minimization at BS transceivers, while maintaining certain quality-of-service and fairness for all users.
Furthermore, the Energy Adaptive Rate Control Algorithm (EARCA) is applied in Stanford University Interim (SUI-3) Channel Model. After adding a fourth energy level to EARCA, and comparing this model with the existing three-level EARCA model, an analysis of how this strategy affects the number of Non-Real Time users and energy consumption was performed.
3
Abaalkhail, Rana. "Design and Development of an Intelligent Energy Controller for Home Energy Saving in Heating/Cooling System." Thesis, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/20576.
Повний текст джерелаАнотація:
Energy is consumed every day at home as we perform simple tasks, such as watching television, washing dishes and heating/cooling home spaces during season of extreme weather conditions, using appliances, or turning on lights. Most often, the energy resources used in residential systems are obtained from natural gas, coal and oil. Moreover, climate change has increased awareness of a need for expendable, energy resources. As a result, carbon dioxide emissions are increasing and creating a negative effect on our environment and on our health. In fact, growing energy demands and limited natural resource might have negative impacts on our future. Therefore, saving energy is becoming an important issue in our society and it is receiving more attention from the research community.
This thesis introduces a intelligent energy controller algorithm based on software agent approach that reduce the energy consumption at home for both heating and cooling spaces by considering the user’s occupancy, outdoor temperature and user’s preferences as input to the system. Thus the proposed approach takes into consideration the occupant’s preferred temperature, the occupied and unoccupied spaces, as well as the time spent in each area of the home.
A Java based simulator has been implemented to simulate the algorithm for saving energy in heating and cooling systems. The results from the simulator are compared to the results of using HOT2000, which is Canada’s leading residential energy analysis and rating software developed by CanmetENERGY’s Housing, Buildings, Communities and Simulation (HBCS) group. We have calculated how much energy a home modelled will use under emulated conditions. The results showed that the implementation of the proposed energy controller algorithm can save up to 50% in energy consumption in homes dedicated to heating and cooling systems compared to the results obtained by using HOT2000.
4
McLellan, P. G. "Control of rectifier equipment used for electrostatic precipitation." Thesis, Open University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375938.
Повний текст джерела
5
Naghiyev, Eldar. "Device-free localisation in the context of domestic energy saving control methods." Thesis, University of Nottingham, 2014. http://eprints.nottingham.ac.uk/14314/.
Повний текст джерелаАнотація:
A reduction in greenhouse gas emissions by the energy sector is required to decelerate global warming. With the domestic sector being the biggest energy consumer, a great amount of saving potential is available in the operation of dwellings. This thesis is proposing to improve domestic energy efficiency by combining energy saving control measures designed to be made by occupants and automation systems, called Combined Occupant and Automation Control (COAC). It highlights that the occupant’s position is necessary to effectively integrate both of those conservation methods. Three unobtrusive domestic occupant detection technologies were identified and compared for this purpose. Device-free Localisation (DfL), an emerging technology, which was found to be the most suited for a COAC system, was then investigated further by the means of a series of technical experiments. A questionnaire, investigating user perception of DfL and of COAC systems, was conducted. Furthermore, case studies were undertaken, during which three dwellings with real occupants received prototypes of a COAC system, consisting of automated washing appliances and a smart pricing scheme. As part of these case studies, semi-structured interviews were conducted. User preferences with regards to the COAC system’s interface and operation were established. Also, behavioural changes, induced by occupant control methods, were observed. The different studies furthermore found that financial gain was the main incentive to save energy. Automation system’s support in conserving energy was demonstrated to be distinctly appreciated and although security and privacy concerns were prevalent, DfL’s support was also permitted. Furthermore, guidance was developed for DfL setup and operation, especially with regards to using an automation system’s infrastructure for this purpose. In conclusion, this research suggests that the novel concept of integrating DfL and COAC meets the technical and practical requirements for general adoption, and hence provides another tool in the race against global warming.
6
Sharifani, Pooya. "Quantification of Human Thermal Comfort for Residential Building's Energy Saving." Thesis, University of North Texas, 2016. https://digital.library.unt.edu/ark:/67531/metadc862744/.
Повний текст джерелаАнотація:
Providing conditioned and fully controlled room is the final goal for having a comfortable building. But on the other hand making smart controllers to provide the required cooling or heating load depending on occupants' real time feeling is necessary. This study has emphasized on finding a meaningful and steady state parameter in human body that can be interpreted as comfort criterion which can be expressed as the general occupants' sensation through their ambient temperature. There are lots of researches on human physiological behavior in different situations and also different body parts reaction to the same ambient situation. Body parts which have the biggest reliable linear fluctuation to the changes are the best subject for this research. For these tests, wrist and palm have been selected and their temperatures on different people have been measured accurately with thermal camera to follow the temperature trend on various comfort levels. It is found that each person reaches to his own unique temperature on these two spots, when he/ she feels comfortable, or in other word each person's body temperature is a precise nominate for comfort feeling of that individual. So in future by having this unique comfort parameter and applying them to the HVAC system temperature control, controlling the dynamic temperature and correlating the indoor condition depending on the occupants instant thermal comfort level, would be a rational choice to bring convenience while energy has been saved more.
7
Heybroek, Kim. "Saving Energy in Construction Machinery using Displacement Control Hydraulics : Concept Realization and Validation." Licentiate thesis, Linköping University, Linköping University, The Institute of Technology, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-15588.
Повний текст джерелаАнотація:
In the sector of mobile hydraulics, valve controlled systems are predominant. In these systems the load force and speed are adjusted by control valves. In machines where multiple drives are used in parallel at extremely varying loads the energy efficiency of such systems is often compromised over large working regions. Most valve controlled systems also lack the possibility to recuperate potential energy.
A different category of hydraulic systems, called displacement controlled hydraulics are based on the manipulation of the hydraulic flow using the relative displacement of the hydraulic machines as the final control element. This type of hydrostatic power transfer, yields a resistance free velocity control, ideally leading to lossless load actuation.
This thesis concerns the introduction of a new type of displacement controlled hydraulic system, adapted for construction machinery. The system decouples the hydraulic functions using one dedicated hydraulic machine for each drive. These machines are of open circuit type, capable of over center operation which enables energy recuperation. The system also comprises four separate valves that by means of switching allow the cylinder to be controlled over all four load quadrants. Depending on the selected valve hardware, the system may also include features available in a conventional valve controlled system, such as meter-out flow control. The system supports both symmetrical and asymmetrical cylinders. However, using the asymmetrical type the load may be controlled in two distinct states of operation. This yields an increased region of operation, which is otherwise generally stated as a drawback in displacement controlled systems. It also allows the selection between different control modes, where one of the modes is always more efficient than another.
In this research both theoretical studies and a practical implementation demonstrate the energy related benefits of the new concept. The target application of this study is a medium-size wheel loader. Measurement results using the wheel loader in a short truck loading cycle show a 10% percent reduction in fuel consumption. According to the theoretical investigation, this corresponds to a 20% reduction in energy consumption for the hydraulicsystem itself.
8
Chen, S. "Model predictive control of the HVAC system in industrial cleanrooms for energy saving." Thesis, University of Liverpool, 2017. http://livrepository.liverpool.ac.uk/3008038/.
Повний текст джерела
9
Björklund, Lina. "Energy Audit and Energy Saving Measures of a Large Office Building : Bern 9 in Örnsköldsvik." Thesis, Högskolan i Gävle, Energisystem och byggnadsteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-32840.
Повний текст джерелаАнотація:
There is a large potential in making the residential and service sector more energy efficient and the first step towards achieving a more efficient use of energy is to implement an energy audit. In this study a property with an approximate area of 8 000 m2, consisting of a main building and three building extensions from different eras has been examined. The main building and its extensions were built in different stages and the first one in the early 20th century and some parts of the last building extension were modified at the time that the examination was carried out. This indicates that there is a vast energy savings potential in the property and an energy audit was performed. The main aim of the study was to examine where the energy was being used and where energy could be saved. Energy saving measures has been suggested together with a calculated approximate energy decrease and payback period. The total energy savings potential for the measures is approximately 146 MWh. The energy audit showed that a large amount of electricity was being used during non-work hours and that energy was lost through the building envelope. The electricity use during non-work hours was examined during the night walk, however, it is suggested to carry out further examinations regarding the property’s vast electricity use during non-work hours. To add loose wool in the roof of B2 has an energy savings potential of 33 000 kWh/year. Another measure is to clean the heat exchangers, this measure has an energy savings potential of 26 000 kWh/year. Also it is suggested to optimize the operational hours for the lighting by implementing presence control and to decrease the energy use for ventilation by cleaning the heat exchangers. Further examinations that would improve the study would be to do measurements of the electricity and temperatures to get a better understanding of the buildings energy use. Also to model the building in a simulation tool would give a calculated energy loss that is more like the actual energy loss of the building and make the results more reliable.
10
Jung, Eun-Sun. "Energy efficiency in wireless networks." Texas A&M University, 2005. http://hdl.handle.net/1969.1/2718.
Повний текст джерелаАнотація:
Energy is a critical resource in the design of wireless networks since wireless devices are
usually powered by batteries. Battery capacity is finite and the progress of battery technology
is very slow, with capacity expected to make little improvement in the near future.
Under these conditions, many techniques for conserving power have been proposed to increase
battery life.
In this dissertation we consider two approaches to conserving the energy consumed
by a wireless network interface. One technique is to use power saving mode, which allows
a node to power off its wireless network interface (or enter a doze state) to reduce energy
consumption. The other is to use a technique that suitably varies transmission power to
reduce energy consumption. These two techniques are closely related to theMAC (Medium
Access Control) layer.
With respect to power saving mode, we study IEEE 802.11 PSM (Power Saving Mechanism)
and propose a scheme that improves its energy efficiency. We also investigate the
interaction between power saving mode and TCP (Transport Control Protocol). As a second
approach to conserving energy, we investigate a simple power control protocol, called
BASIC, which uses the maximum transmission power for RTS-CTS and the minimum
necessary power for DATA-ACK. We identify the deficiency of BASIC, which increases
collisions and degrades network throughput, and propose a power control protocol that addresses
these problems and achieves energy savings. Since energy conservation is not an issue limited to one layer of the protocol stack, we study a cross layer design that combines
power control at the MAC layer and power aware routing at the network layer. One poweraware
routing metric is minimizing the aggregate transmission power on a path from source
to destination. This metric has been used along with BASIC-like power control under the
assumption that it can save energy, which we show to be false. Also, we show that the
power aware routing metric leads to a lower throughput. We show that using the shortest
number of hops in conjunction with BASIC-like power control conserves more energy than
power aware routing with BASIC-like power control.
11
KOBORI, Satoru. "Development of the Japanese Energy Saving Technology during 1920–1960 : The Iron and Steel Industry." 名古屋大学大学院経済学研究科附属国際経済政策研究センター, 2012. http://hdl.handle.net/2237/16044.
Повний текст джерела
12
Kukard, Warren Christopher. "Research on reducing costs of underground ventilation networks in South African mines / Warren C. Kukard." Thesis, North-West University, 2006. http://hdl.handle.net/10394/1639.
Повний текст джерела
13
HSU, CHIEN-TUN, and 徐千惇. "LED energy-saving lighting control system." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/br9k2d.
Повний текст джерелаАнотація:
碩士國立高雄應用科技大學
電子工程系碩士班
101
Lighting is an indispensable appliance to daily life of human. Therefore, the total average power consumption of every country around the world spending on lighting appliance is very appreciable. International Cooperation Sci-Tech Newsbrief (May 2010) mentions the lighting power consumed 20% rate in world energy usage. The requirement for lighting power will more increase to 80% in 2030, predicted by power experts. The lighting type includes commercial (70%), residential (26%) and street lighting (4%). Recently a lack of energy and rising of environmental awareness, lighting power consumption in the world expects to be reduced at least 38% by new lighting LED with energy saving and environmental concept, and combined with improvement of energy-saving technologies. Energy saving is not to have a negative effect on quality of life due to reducing power usage. However, energy shall be efficiently and appropriately applied. In this study, provides an efficient energy-saving lighting control system in relation to lighting environment and psychological reaction to achieve comfortable atmosphere and energy saving. The system structure consists of a microprocessor module, sensor module, LED driver modules, and LED lighting device. To achieve the wisdom dimming of the LED lighting device by inputting auto-dimming ideal parameters into the microprocessor module, and using output PWM signal of microprocessor module and sensor module. The actual experiment conclusion, the common lighting in the home between 9:00 and 17:00 after using Dimmer system that can reduce the energy consumption around 60% to 65% than before, and the lighting for business store can reduce energy consumption around 30% to 45% . In different environmental light and temperature, the system can automatically adjust the illuminance light as expected and color temperature based on various requirement of user. To prevent from much lighting power wasting and unnecessary full power load while power switch on. It can be fully applied in natural light, such as commercial interiors, signs, billboards and public electricity lights, automotive illumination, not only can save a considerable amount of electricity for lighting, but also It can achieve carbon reduction. Keywords: LED, Energy-saving ,Lighting
14
Tsai, Ming-Jiun, and 蔡名峻. "Energy-saving Control System for LED Streetlight." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/40998610020810829178.
Повний текст джерелаАнотація:
碩士國立高雄應用科技大學
電機工程系博碩士班
103
Nowadays, with the environmental problems such as imminent exhaustion of fossil energy and increasingly serious global warming make the concept of environmental protection about energy conservation, and carbon emission reduction has been taken seriously, and many energy-saving systems have been proposed in various fields with the trend of energy conservation and carbon emission reduction. Furthermore, there are a lot of energy-saving technologies and patents of "road lighting", which are closely linked with people's daily life. In order to achieve the goal such as energy conservation and carbon emission reduction, those technologies and patents recommend reducing unnecessary power consumption by adjusting the brightness of streetlight. However, most of energy-saving streetlight systems merely focus on their energy-saving function, but neglect the optimal opportunity of using ofenergy-saving streetlight system, even ignore the problem that the energy-saving streetlight system may cause driver or road user to produce a phenomenon of visual fatigue, which may further lead to a traffic accident. In order to mitigate the foregoing disadvantages, this thesis constructs an LED streetlight control system that not only achieves energy conservation, carbon emission reduction, and environmental protection but also considers the traffic safety of drivers and road users. This system also makes the energy-saving streetlight work at the appropriate time to extend the life of streetlight and control system.
15
Ke, YungYao, and 柯詠耀. "A Study of Energy Demand Control for Home Energy Saving." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/764mqw.
Повний текст джерелаАнотація:
碩士聖約翰科技大學
電子工程系碩士班
100
Nowadays, many researches have investigated in smart home, where includes power monitoring, security, precaution, and burglarproof. They have many apparent achievements, especially power monitoring. The basic demands of the smart home is to save energy, to proceed with their effectiveness is to control the power consumption. As the reason, many of the design allow the user to be able to know the relevant information of the power consumption of household electrical appliances that can be effective to curb the waste of electricity. This thesis is to manage of household electricity demand, and then designs a smart home power monitoring system. We use Visual Basic 2008 to edit the human-machine interface and the database system is created by the MySQL editor. The several of electrical power consumption information are displayed in human-computer interface. The power consumption of each outlet also calculated by the power monitor system, and the power consumption information is stored to do long-term, too. We can obtain detailed information about household monthly power consumption and compare the monthly electricity consumption from the history information of electricity in database to reach the goal of power consumption control.
16
Lee, Wei-Shin, and 李維新. "Energy Saving for Humidification Control Using Heat Loading." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/92601086792300589040.
Повний текст джерелаАнотація:
碩士中華大學
電機工程學系碩士在職專班
100
The heat loading normally needs the aid of the dry cooling coil (DCC) to remove which need power consumption. In the thesis, the heat loading will be utilized in the extra iso-enthalpy equipment, such as, the two-fluid fog humidifier and the high pressure fog humidifier. In other word, during the humidified period, the adding enthalpy in the make-up air (MA) generated from the original make-up air unit (MAU) can be reduced by the same amount as the heat loading when the flow of DCC becomes zero. Thus the energy saving is double, that is, the gas saving from the MAU and the electricity saving from the DCC. The energy saving design is a two-stage humidifier consisting of one the two-fluid fog humidifier in the MAU and one high pressure fog humidifier installed in the returning air path of the clean room. The capacity of each stage of the two-stage humidifier will be designed to be equal, so the optimal absolute humidity setting of MA can simply be fixed. Moreover, the two-stage humidifier is robust to the double variation of the heat loading. It notes that the heat loading can determine how much the adding enthalpy is needed for the outside air (OA) to become the MA. Therefore, the dry ball temperature of the MA can be decided from the known setting of the absolute humidity and enthalpy. The adjustments of the associated settings of MA or DCC to fulfill the requiring setting are studied and discussed based on the psychrometric chart. Therefore, its energy saving can be calculated and predicted from this chart. The implementations and analysis of the proposed two-stage humidifier are also carried out in the thesis.
17
賴柄源. "Study of Wireless Scenario Energy-Saving Control Systems." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/44781110418645379697.
Повний текст джерелаАнотація:
碩士國立彰化師範大學
電機工程學系
102
The study aims to develop a wireless scenario control system integrated with two-way light scenario design to easily set the illumination for energy-saving. By connecting WiFi Hub with the facility of PC, notebook or tablet to operate family light scenario. Also, the atmosphere can be quickly built according to different situations by switching the light and shade. The user can easily control and feel the scenario within the Wifi area without the limitation of location and equipment. Moreover, for users, who are not at home, the proposed system can be connected with smart phone and App application to remotely control the light and power consumption for more convenience. The developed product equipped with timing circuit allows users to install circle or sequence timing to turn on/off the light in certain period for different situation. Through the function, the light can be turned on/off and adjusted at expected time for energy-saving and reminding purpose. The proposed illumination system can be combined with cloud platform in one way and integrated with illumination supply chain system in the other way. Comparing with lighting products in the market, the developed system has more technique innovation to achieve better efficiency and improve the competing force in the international market.
18
"Energy saving in air conditioners by direct load control." Tese, MAXWELL, 1999. http://www.maxwell.lambda.ele.puc-rio.br/cgi-bin/db2www/PRG_0991.D2W/SHOW?Cont=1018:pt&Mat=&Sys=&Nr=&Fun=&CdLinPrg=pt.
Повний текст джерела
19
CHANG, CHIH-MIN, and 張志敏. "Intelligent Streetlamp Control System for Energy-Saving and Management." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/80888370204159159532.
Повний текст джерелаАнотація:
碩士國立臺灣科技大學
電子工程系
100
In today’s world, lighting of streets is regarded to be a major concern for a traffic safety and public security. Due to the importance of an appropriate illumination in city, the construction of street lighting systems is considered as one of the main area of concentration among the national infrastructure development projects. Increase of the population causes an increase of the light usage accompanied with an appearance of the streetlamps maintenance and control problems. Meanwhile, with the continuation of street lighting development, the rise of electricity consumption is anticipated to dramatically scale up as well. The issue of growing power consumption and owing to that, of the increased waste of electrical energy, is gradually turning to be an acute problem. Most current streetlamp management systems are using cable to send control signal. When passing a control signal by using cables, some difficulties may occur in organizing a flexible control of specific set of streetlamps. That is one of the reasons of experiencing hardships, while trying to implement an energy-saving plan and to get it under supervision. In following thesis, we designed a wireless remote management system for monitoring and control of streetlamps. The system uses a low power, wireless network standard ZigBee to organize a streetlamp group network and starts operating GPRS station for the purpose of sending data to the central server. GPRS station includes an integrated GPRS and ZigBee modules, which serve as a data transfer node between a set of streetlamps and the central server. One of the interesting features of the developed system is enabling a Google Map function usage, in order to illustrate the lamp position and its real-time status. The experimental results have showed that the design of our systems allows a successful signal transmission to a streetlamp with a help of a wireless network. In addition, the system introduces a flexible set of control management plan to send signal from central server to streetlamps. This thesis may be an object of interest for practitioners, since it introduces a framework of implementing a customized energy-saving plan for streetlamps.
20
洪忠民. "Study of Energy Saving Monitoring for Automation Control Systems." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/47892743432301282501.
Повний текст джерелаАнотація:
碩士國立彰化師範大學
電機工程學系
101
Automation control systems have been widely used in the industry for saving the labor cost. However, while the systems are unexpectedly crashed or idled, the manpower is still required to manually shut down the systems. Lots of energy would be wasted because of the waiting time for resetting the automation control systems especially the traditional systems without standby mode control. In this study, a current sensing circuit and a low cost 8051 microchip are integrated into an energy saving monitoring module for automation control systems. A personal computer is also adopted and connected by RS-232 interface for monitoring and controlling the systems. Finally, a 600W power supply and an electrical load are used to simulate the power demand of an automation control system. Several experiments with different power loading are carried out. From the experimental results, it can be seen that the linearity of the current sensing circuit is good enough for the current signal feedback and the validity and the performance of the proposed energy saving monitoring module are verified as well. Moreover, the wasted energy while the system crash or idle can totally be eliminated by the proposed module. It only takes about 0.6W for the proposed module.
21
Tsai, I.-Chi, and 蔡易輯. "Study of Energy Saving Control of Household Electricity Consumption." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/02106267807349621341.
Повний текст джерелаАнотація:
碩士國立高雄應用科技大學
電機工程系博碩士班
101
To improve energy saving of household electricity consumption and living quality at home simultaneously, this thesis investigates strategies of energy monitoring and system control of appliances and develops a remote monitoring and management system by smart mobile devices for household electricity usages. The system is developed based on embedded system and ZigBee wireless sensor module to monitor home indoor environment. The detected environmental data includes temperature, humidity, lightness and movement. IP cameras also installed in the system allow monitoring the status of home at any time. To provide usage for the mobile devices of the different operating systems, the system uses cloud technology to build the site of cloud monitoring. The cloud database is built for the cloud services. Historical information of the sensors is recorded in the cloud database and can be used to schedule the energy saving strategies further based on user’s electricity consumption habits.
22
Wei, Hsu-Chia, and 徐家偉. "DC Servo Motor Speed Control with Energy Saving Analysis." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/63447039402034344463.
Повний текст джерелаАнотація:
碩士東南科技大學
機械工程研究所
101
This study designs a DC servo motor speed control system , and utilizes the method for energy saving effect。The PWM signal is applied to the DC drivers, and the inductance of DC motor affect the speed responses with PWM signals is investigated. A direct neural control (DNC) based on back propagation neural networks (BPN) with specialized learning architecture is applied to control and regulate the speed of DC servo motor. The common DNC system usually needs an emulator, but the proposed neural controller is treated as a speed regulator without the specified reference model. A tangent hyperbolic function is used as the activation function, and the back propagation error (BPE) is approximated by a linear combination of error and error’s differential with high convergent speed. The simulation results reveal that the proposed method is available to speed regulator keep motor in constant speed, and the energy consumes also investigated. The comparison of energy consumes between the conventional PID control and the DNC system is investigated by simulation. The simulation results also reveal the DNC system can control the DC motor in accurate speed with less energy consume. Keywords: DC servo motors, Speed regulator, Neural networks, Energy saving controls
23
Lee, Ming-Tse, and 李明澤. "Screw Chiller Variable Frequency Control and Energy Saving Application." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/25764865971077260525.
Повний текст джерелаАнотація:
碩士國立高雄應用科技大學
電機工程系
97
Abstract Because science and technology improve day by day, energy and environmental protection problem are become a critical issue. Residential/Commercial customers had 17% of total electricity consumption and the air condition load consume more than 1/3 electricity. Thus supply usually not enough, it is thus clear that the air condition economy energy saving policy has already become importance issue. This study mainly discusses both theoretical and practical differences between screw chiller unit with fixed speed (FS) and variable frequency drive (VFD) respectively. The research uses a full liquid type chiller set's difference as the single VFD type compressor、the twin compressor(FS+ VFD) and the single FS type compressor. According to the ARI 550/590-2003 of the standard condition carry on a test. Carry on an income data regression analysis. Moreover, economize on energy and invest recall analysis by DOE-2(imitate office building load). The research shows that EER for IPLV of VFD and VFD/FS are 6.165 and 5.59 and they are higher EER for than IPLV of FS with 4.73. Also join the operation expenses into the beginning to place cost to calculate out each a combination of the air condition electricity charges estimate and recall time limit. Hope to build up an economy valuation model for variable frequency chiller in this way. After estimating invest recall time limit about is the 1/2 of the machine set service life. Hopefully, such model and analysis of the experiment could be regarded as an efficient technique applied into actual units, and furthermore, would provide chiller units with not simply deeper discussion but also more efficient solution to the goal of energy saving.
24
Shiu-Hau, Jung, and 鍾旭浩. "Energy Saving and Carbon Reduction Control for Regional Airconditioning Load." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/av4sgr.
Повний текст джерелаАнотація:
碩士國立臺北科技大學
電機工程系研究所
99
In order to make the small users save air conditioning energy more effectively, this paper proposed a design of controlling energy-saving of air-conditioning shedding. This design is based on ”PMV fuzzy controller” and “PMV Predictive Fuzzy Controller” method, and latter two used Predicted Mean Vote(PMV) as comfort level index of interior space environment which is established by ASHRAE Standard 55. To demonstrate the results of carbon reduction and efficiency, Small-scale Clean Development Mechanism(CDM) is used to present monitoring plan and design a specific client''s project plan and control strategy. Owing to regional small and medium-sized business users, the air-conditioning load system is consisted of more than one component. It’s difficult to achieve the prospective results by adjusting air conditioning temperature individually to control the restriction of power consumption degree. Therefore, ”PMV fuzzy controller” method. Is used to adjust comfort and shedding, which is according to required energy and the environment , and "PMV prediction fuzzy controller" method is used to stabilize the environment if it’s needed. It can keep power consumption degree lower than objective value control indoor environment in an ideal and comfort range to achieve the effectiveness of carbon reduction.
25
Jang, Jiun-Kai, and 張鈞凱. "Integrated Energy Saving Control of Air Conditioning and Lighting Systems." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/kj8f67.
Повний текст джерелаАнотація:
碩士國立臺北科技大學
電機工程系研究所
102
The electric bill is higher and higher led environmental consciousness to rise, the issue about how to control the building’s air-conditioning and lighting equipment is very worth to discuss. How to efficiently scheduling of air conditioning and lighting equipment power usage, making the whole building electricity situation to be permitted and reduce the impact of comfort in the environment inside the building. Therefore, this paper proposes Fuzzy Binary Programming within office buildings, factories and schools, the controller for the installation of air conditioning and lighting equipment in each building environment will integrate the within control center as a platform to integrate lighting controllers and air conditioning controllers, input/output control contact, RS-485 network and network devices, the development of a highly operational and monitoring the effectiveness of the integrated air-conditioning and lighting energy saving control systems, thus achieving the purpose of reducing electricity costs.
26
Chen, Liang-hong, and 陳亮宏. "Gain scheduling control system design and energy-saving controller implementation." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/80938037477261982967.
Повний текст джерелаАнотація:
碩士國立臺灣科技大學
機械工程系
98
It is well-known that the PID control algorithm is only valid locally. Wider ranges of operations are required in many industrial applications when PID controller is implemented; therefore, some modifications are to be designed. The gain scheduling strategy has widely used for decades whose theoretical justification has been investigated only recently. In this thesis, we look into the theoretical development of the PID controller design followed by its gain scheduling modifications. Various computer simulations and experimental results show their feasibility. The second part of this thesis is focused on the gain scheduling of the traditional sliding control. For covering the uncertainties, the sliding controller uses the worst variation bound for its gain selection. Here we propose to schedule the uncertainty bound along the system trajectory such that instead of the worst case in the whole operation range we estimate the worst case in a smaller window. Significant improvement in the control effort reduction can be observed in the experimental study with a minor price of slower transient.
27
Huang, Chao-Cheng, and 黃昭成. "Energy saving control system for home appliancesair-conditioning ventilation fan." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/17129196581173421514.
Повний текст джерелаАнотація:
碩士崑山科技大學
機械工程研究所
102
The ventilation of household window-type air conditioner is very poor and this function is not even included in the design of split-type air conditioner. Usually, we will have all doors and windows closed when air conditioner is on, and fresh air can not be brought indoors while those harmful substances like CO2, CO, formaldehyde and volatile organic compounds, bacteria and fungi accumulated in the space can not be discharged which might cause injuries to human health. So, we design a solution for this shortcoming as: Energy saving control devices for ventilation fan of household air conditioner. The theory is as following: 1. The electric control box will be connected to power supply phase with sockets on both ends. The socket on one end is for the air conditioner, and the 2 sockets on the other end are for pumping/exhaust fan. We will install a pumping fan and exhaust fan for high vent. Demand and one exhaust fan will be enough for lower demand depending on the indoor space and number of people. The power plug of the air conditioner plugged in the correspondent power control box outlet while the fan power connector plug in the power control box that corresponds to the outlet of the fan. 2. The temperature sensing system in the control box has two separate temperature sensors for indoor and outdoor temperature. The indoor temperature sensor will be installed above the control box to a projecting position, and an outdoor temperature sensor will be placed in a proper position connected to the control box by an extension cords. 3. When the outdoor temp is over 25℃, the automatic control unit in the control box will initiate the pump/exhaust fan for ventilation few minutes every hour. 4. When the outdoor temp. At 20~25℃ and indoor temp. Below 23℃, the automatic control unit in the control box will turn off the air conditioner and initiate the pump/exhaust fan and keep ventilating to adjust indoor temp. And bring in fresh air. When the indoor temp reaches 20℃ or below, exhaust fan will be stopped and ventilate a few minutes every hour according to setting. The pump/exhaust fan will restart and keep running until the indoor temp. Reaches 25℃ or higher. The cycle will keep going continue.
28
HO, SHANG-JU, and 何尚儒. "A bicycle way with energy-saving control LED light system." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/27334529154868294673.
Повний текст джерелаАнотація:
碩士國立高雄應用科技大學
電機工程系博碩士班
104
Global climate change and warming become more serious. Many countries executed energy-saving policy, hoping to slow down the Green House Effect situation and keep earth development sustainable. Bicycle is a common transport. It is economy, flexibility, energy conservation, no air pollution and convenience for use. It is a healthy and environmental protection "green transports". Bicycle has become more popular in recent years. More and more people use bicycle. It not only saves money but also environmental protection. In order to achieve the goal such as energy conservation and carbon emission reduction, governments encourage citizen to ride bicycle as a short transport. Already has more than 5689 km bicycle way in Taiwan. There is less use of bicycle way in midnight. To avoid unnecessary waste of energy, this research design to the LED control system constructed. It through control brightness of the bicycle way LED light to achieve energy saving. The LED light control system constructed is not only achieves energy conservation, environmental protection but also considers the safety of bicycle users and can extend the life of LED light.
29
Wu, Cheng-Hong, and 吳承鋐. "Smart Monitoring Control Module Design for Energy Saving Control of Indoor Lighting System." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/06477411164391712206.
Повний текст джерелаАнотація:
碩士正修科技大學
電機工程研究所
103
Indoor lighting is one of the major energy-consuming equipment in all buildings. To reduce lighting energy consumption has become a major task for today's emphasis on energy saving and carbon reduction. Combined with the new concept of smart buildings, the smart and user-friendly design for the lighting control will become a trend in the future, and this is also an effective way to reach energy saving and carbon reduction. In this thesis, an indoor lighting energy monitoring system was established by combining the electric curtains and controlling the indoor brightness. This system, controlled by a single-chip microcomputer module, can adjust the electric curtain to guide the maximum natural light in the shade condition, and compensate the indoor brightness by the artificial lighting during the day. In addition to sense the indoor brightness, indoor staff activities are also detected to implement the automatic power saving function as unmanned condition. On the indoor brightness control, control commands are wirelessly transmitted to adjust the angular position of the shutters and the brightness of indoor lighting for simplifying wiring. Furthermore, this system has the function of detecting power consumption of indoor lighting, and the external wired or wireless communication as well, which can facilitate the establishment of the smart building power monitoring systems.
30
Wang, Bo-Tian, and 王柏天. "Energy Saving Control of Hot Water Supply System by Thermal Energy of LED Lightings." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/jk5m6u.
Повний текст джерелаАнотація:
碩士正修科技大學
電機工程研究所
104
The luminous efficiency and lifetime of a LED luminaire is closely related to its operating temperature. Overheat or working at higher temperature would substantially decline the luminous efficiency and lifetime. However, the heat generated by the LED lights, also is a kind of energy available. If we can make good use of this energy, and reduce the LED light temperature in the meantime, it can be described as double benefit. In this thesis, a heat exchange system of the LED lighting is developed by a single-chip power IC PS2100 as the control core. This system integrates a LED lighting, a heat exchange module, a hot water supply system, as well as the sensing of voltage, current, temperature and water flow and so on. The heat absorption by the water in the heat exchange module can effectively reduce the temperature of a LED lamp. Meanwhile, supplying the water absorbing heat into the hot water supply system can also reduce the heating time and power consumption as well, to achieve energy saving and carbon reduction. The system can be for different occasions by adjusting the number of LED lamps and heat exchange systems. This study shows that the larger the installation place, the more significant the effect of power saving and carbon reduction.
31
KUOHAO, LIN, and 林國豪. "Scenarios Fuzzy Reasoning and Energy-Saving Control Systems in Smart Office." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/53188522943652971158.
Повний текст джерелаАнотація:
碩士中華大學
資訊工程學系碩士班
100
With the arising of pervasive computing and cloud computing technology, it is expected that more and more intelligent system will be developed to assist and support human livings in the upcoming era. In order to achieve a robust and complete intelligent system, the system must be able to perceive current situations and changes in surrounding environment and understand current status of users, so that the system can inference current context and provide appropriate services for users. In this thesis, a "scenarios fuzzy reasoning and energy-saving control systems in smart office" framework is proposed. A set of environmental sensors for the systems are deployed in a real-world industrial building. The scenarios fuzzy inference system is developed for effectively manage all the low-level sensors information and inductive high-level context scenarios based fuzzy inferences. Hereafter, the energy saving control system will control the switches of the lights, air conditioner, and electrical power outlets in the building, in order to conduct a green building.
32
Yang, Tzu-Wen, and 楊子文. "Energy-Saving Control of the Ball Mill System Using an Inverter." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/67795118755262901031.
Повний текст джерелаАнотація:
碩士國立彰化師範大學
電機工程學系
96
ABSTRACT Currently most of ball mill power systems used in brick industries of Taiwan, Mainland, and South-Eastern Asian countries adopt Y-Delta start and then running under full-load working condition normally, and this leads to very huge power consumption. Though some of the machine makers tried to reduce the power consumption by using high rate power inverters from abroad, but most of them are failed. The main cause may attribute to the required starting toque of ball mills is very large as the machine are normally carry heavy load to revolve that a common inverter with a standard control curve cannot bear. In order to save the power consumption of ball mills, this thesis presents an investigation to drive a 200-tone ball mill with a 300-hp inverter which is controlled by a newly designed Programmable Logic Controller (PLC) and Man-machine interface scheme. The experimental result approves that this ball mill control system can save the electric power up to 30% and above. It meets the requirement of both energy saving and lower maintenance fee.
33
Lee, Shiun-Kuu, and 李訓谷. "The Analysis of Ventilation System Energy Saving and Intelligent Control Strategies." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/17269180153527856695.
Повний текст джерела
34
林展安. "Study of Energy Saving and Thermal Expansion Control for Power Turret." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/59990114559987092862.
Повний текст джерелаАнотація:
碩士國立彰化師範大學
電機工程學系
98
Abstract The fastest rotation, between 3000 and 4500 turns, of the turret in a CNC slant bed lathe generates heat from gears and cutting axis in the power turret, and this causes the thermal expansion of the turret due to the difficulty to dissipate the heat in a closed space. In order to solve the inaccuracy of machining components’ position due to the thermal expansion, which will lead to an excess error and unstable accuracy of processed pieces, thus this thesis aims to deeply study the effect of temperature raise on the turret and to control the increase and stability of temperature during high speed running by the design of an efficient external coolant system. This research not only increases the shaft rotation to 6000 turns with stable temperature, but also reduces the thermal growth of tooling about 60% during long time machining process. Thus, the research will contribute to the high economic value and high technology level for the domestic CNC slant-bed lathe. Furthermore, as the machine tool under operating production, 70% energy is the fixed consumption, which is not related to production. Thus, the thesis adopts the principle of frequency conversion with oil pressure system and inverter control to minimize the pump pressure during waiting period. It decreases oil pressure temperature by controlling the pressure and flow and saves about 36% power consumption. Through the improvement mentioned above, the turret process efficiency of turning-milling complex machining is increased by high speed and efficient cutting. Keyword: Power turret, Thermal expansion, Power wear, Inverter
35
Hsieh, Jia-Da, and 謝佳達. "Battery Charging/Discharging Test and Control System with Energy Saving Features." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/15252270095035061998.
Повний текст джерелаАнотація:
碩士國立中正大學
電機工程所
97
This thesis presents development of battery charging/discharging test and control system with Energy-Saving features. This system is composed of an AC/DC bidirectional inverter with Power Factor Correction, a DC/DC bidirectional converter, a buck charger, a boost discharger and a LabVIEW human-machine interface. This system allows batteries to be charging and discharging at the same time. The discharged energy of the batteries can be recycled to charge batteries, and the excess discharged energy can be recycled with grid-connection, greatly reducing power consumption in the battery charging and discharging test process. The charging and discharging Current and Voltage waveforms can be recorded by the LabVIEW software package. In this study, we develop three chargers, three dischargers and a LabVIEW human-machine interface to verify the energy-recycle function. Comparing this system with the conventional one reveals that this system can save energy up to 73 %.
36
Wang, Chiung-Hung, and 王瓊弘. "System Identification and Energy-Saving PID Control of a BLDC Motor." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/40330283665479768376.
Повний текст джерелаАнотація:
碩士國立高雄第一科技大學
機械與自動化工程研究所
102
The main objective of this paper is energy-saving control of the brushless direct current fan motor (BLDC). First, we establish the typical mathematic model of BLDC motor and derived the second order derivative equation to simulate the actual situation. In numerical simulation, the C language software is employed to code the mathematical model and adopt the real-coded genetic algorithm (RGA) to do the numerical identification to prove this method is correct. Then we inject the proportional, integral and derivative (PID) control to adjust the rotation speeds of numerical simulation. In experimental identification, we adopt the RGA method to identify these unknown parameters and design the energy-saving PID controller gains. From the numerical simulation, the consumption power of BLDC motor via the PID controller which we designed can achieve energy-saving effect. From the experimental result, the PID controller which we designed can successfully adjust the output rotation speed to the target rotation speed, and can achieve the energy-saving effect.
37
Chang, Bo-sen, and 張博森. "Web-based Infrared Remote Control Systemand Its Application to Energy Saving Supervisory Control System." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/67580879300007588888.
Повний текст джерелаАнотація:
碩士國立聯合大學
電機工程學系碩士班
96
In recent years, steady depletion of fossil fuel reserves and the rising crude oil price have caused the electricity cost to increase. At the same time, the electricity consumption has also substantially grown due to the higher living standard. Therefore, on the premise of limited energy resource, more efforts for improving electrical energy saving technology need to be done to make use of electric power more efficiently. Thanks to the rapid progress in the micro-controller and supervisory control and data acquisition (SCADA) technologies, several micro-controller-based modules were delveloped in this thesis for the purpose to monitor and control the electricity demand of the aggregated window/split air conditioners (ACs). These modules are web-based infrared remote controller (TCPIR-51), current meter, infrared controller (IR485/232), door-window detector, infrared controlled switch, and infrared learning module. They can adapt to different communication and Internet environments to construct a suitable load management system. With the abilities of collecting power consumption data on-line, controlling the developed modules through the internet, and applying available demand control rules, the proposed load management system in this thesis can effectively regulate the aggregated window/split ACs to lower the peak demand, therefore to decrease the penalty fee for exceeding the contract demand, as well as to save the electrical energy use. The load management system proposed in this thesis has been put to the tests and been verified in both a laboratory environment and a tecahing building environment. According to the test results, the system can control the demand effectively and has the effect of saving electrical energy. For 28 classrooms with 56 split ACs (2.5 kW each AC approx.), the system can decrease the over-demand penalty about NT$228,000 a year, save the energy use bill about NT$45,000 during the summer time, and reduce the emssion of carbon dioxide about 2,166 (Kg CO2) a month, make it promising for commercial use.
38
Hsu, Yi-Chieh, and 許益捷. "Area-Saving and High Efficiency RGB-LED Driver with Adaptive Driving Voltage and Energy-Saving Control Technique." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/z62pru.
Повний текст джерелаАнотація:
博士國立臺灣大學
電子工程學研究所
107
The red-green-blue light-emitting diode (RGBLED) driver with adaptive driving voltage and energy-saving (ADVE) technique is presented in this paper. To obtain the proper driving voltage, an ADVE control circuit is proposed. This approach tracks the reference voltage of a boost converter to achieve the appropriate output voltage of the boost converter. Hence, the power loss of the linear current regulator is reduced to improve the efficiency of whole system. Moreover, the occupied area of the linear current regulator is saved about 10% by the proposed switching linear current regulator. This chip was fabricated using TSMC 0.35 µm 2P4M complementary metal-oxide-semiconductor (CMOS) technology. The active chip area is 0.3 mm2. The maximum driving current and operating frequency are 200 mA and 100 kHz, respectively. Compared with a conventional LED driver with fixed output voltage, the experimental results demonstrate that the power loss of the proposed LED driver with ADVE technique is reduced by over 58%.
39
Shen, Shih-Tang, and 沈士棠. "Intelligent Parallel Control of Energy-Saving Control and Servo Control on a Hydraulic Valve-Controlled Cylinder System." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/33579955096288912335.
Повний текст джерелаАнотація:
碩士國立臺灣科技大學
自動化及控制研究所
92
Conventional hydraulic valve-controlled systems with constant flow pump have better control response. Although supply pressure of pump of such systems is set by a relief valve according to the load of the hydraulic cylinder, the energy efficiency is lower. The objective of this research is to develop suitable controllers for combining servo control (i.e. path control, velocity control and force control) with energy-saving control (i.e. constant power control, load-sensing control and constant supply pressure control) in a hydraulic valve-controlled cylinder system so as to realize high energy efficiency and high servo control performance simultaneously. The integrated control system is a two-input two-output (TITO) system, that is composed of the servo control system and the energy-saving system. The coupling interaction exists in the complex integrated system such that decoupling compensators are used. Controllers of is integrated system were developed by fuzzy sliding mode control theory. Fuzzy sliding mode control theory is used for simplifying the complex fuzzy rule bases of the TITO system and guaranteeing the robustness and stability of fuzzy control systems. Furthemore, self-organizing modifiers are also used on the FSMC control for adapting the control rules according to the environment variation. The experimental results show that servo control, include path control, velocity control and force control, with load-sensing control can save energy substantially in comparison with the conventional system with relief valve and maintain excellent servo control performance. Thus the feasibility of the integration of servo control and energy-saving control on a hydraulic valve-controlled cylinder system is verified. Keywords: hydraulic valve controlled system, parallel control, load-sensing system, energy-saving control, servo control, decoupling control, fuzzy sliding mode control, self-organizing modifier.
40
Chang, Ming-yu, and 張明裕. "An Intelligent Remote Control System with Positioning、Voice Control、Energy-saving and Signal Learning Capabilities." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/00234777434737052786.
Повний текст джерелаАнотація:
碩士國立中正大學
通訊工程學系
98
In this thesis, we develop a networked infrared remote control system with Positioning、Voice control、Energy saving、IR signal learning and user friendly management interface. With the evolution of the times, technologies gradually immerse into home environments, become parts of the family, and gradually change people''s behaviors. Similarly, network evolution from the cable to the wireless also accelerates the development of technology for home environment. Because of these, Researchers began to consider how to enhance quality of life and the convenience of home based on the wireless and other new technologies and to build on the system. This thesis presents an IR control system consisting of multi platforms and integrating multi functions. Our system includes a smart phone for user mobile terminal, a wireless embedded platform for IR remote control, and a home server for system management and data storage. We development our own control protocols and services. Furthermore, our services have many intelligent user friendly features, including system information management interface, positioning, voice, selected menu, auto handoff, auto power-saving. Based on the above three subsystems, software development on android phone, embedded ARM7 platform and PC. Android smart phone as the end device is for the user to send commands to server through 802.11 wireless LAN or 3G networks; the embedded ARM7 platform serves as the appliance control network node, which receives commands from the server and convert they to infrared remote control of home appliances.
41
Chuang, Wei-Chung, and 莊偉忠. "The Development of Remote Control Information System for Intelligent Energy-Saving Applications." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/28261639791839091363.
Повний текст джерелаАнотація:
碩士亞洲大學
資訊工程學系碩士在職專班
100
Traditional lighting control is operated by using the manual switching mode. The streetlights are started by artificially turning on the electricity power to make the fixtures produce illumination. This old model has not free energy-saving effect in addition to the consumption of human power. Therefore this study is to implement a remote intelligent surveillance system, in which the illumination sensor uses the illumination of street lights to determine the environment brightness through ZIGBEE[3] wireless network transmission technology to send illumination signal timely back to the management system, where the environmental management system is based on the environment illumination of street lamps and brightness necessity at different hours to make illumination management decisions for managers to regulate the street lamp brightness to achieve saving power consumption and reduce costs.
42
Tzu-KueiYeh and 葉子魁. "Research on Energy-Saving Control of the Central Cooling System in Ships." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/47327879986217097590.
Повний текст джерелаАнотація:
碩士國立成功大學
系統及船舶機電工程學系碩博士班
100
The power consuming in ships mainly focuses on motors, the cooling pumps of the central cooling system especially. The seawater cooling pump of the central cooling system in ships is normally designed to maintain the temperature of in-take seawater at 32℃ when the pump is under full speed to reach the flow nowadays. However, the seawater temperature is mostly lower than 32℃ as the ship sails through different areas. Thus, the actual in-take seawater flow can be reduced to prevent a energy waste. Due to the trend of energy saving and carbon reductionin the ship design, this research investigates the feasibility of energy-saving control for the central cooling system in ships and proposes a strategy of energy saving control. A ship central cooling system is implemented and simulated using Matlab/Simulink in this thesis in order to adjust the in-take seawater flow as the seawater temperature is lower than 32℃ with the same cooling ability. So the power consuming of the seawater cooling pumps can also decrease to reach the goal of energy saving. The result in this thesis can be a reference for designing a ship central cooling system in the future.
43
Chung, Tai-Yen, and 鍾岱諺. "Current Sharing Control and Energy Saving to Achieve High Efficiency Server Power." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/73699498089026235242.
Повний текст джерелаАнотація:
碩士中原大學
電機工程研究所
101
In this thesis, we use the current sharing control and energy-saving control to achieve in the server power supply. It can control current accurate in parallel mode and there would be not conflict each other. Energy saving is to improve efficiency under half load to meet 80Plus platinum efficiency. We provide two methods in this thesis. Method 1: We use active current share control method to improve current accuracy and fast OR-ing circuit can control output OR-ing MOSFET resistance to decrease reverses current at light load. Method 2: One circuit is added to control frequency and voltage of power factor correction at different loads, to study and calculate the optimal operating point. Finally, we design a 600-watt power supply prototype and verify that the results obtained can fully meet the requirements. The features of this thesis include as: 1. It can make current accurately in parallel mode and there would be not conflict each other. 2. It can improve power supply efficiency and design power factor correction at the optimal operating point.
44
Lin, Ei-Wei, and 林逸偉. "Energy Saving of the VWV Control Strategy, as Applied in Chiller Systems." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/72980993105211132466.
Повний текст джерелаАнотація:
碩士國立勤益科技大學
冷凍空調系
99
Since the industrial revolution, overuse of energy has resulted in global warming, which further leads to abnormal climate change, and the counterattack phenomenon of nature has continuously caused serious disasters throughout the world. According to the statistical data of experts and scholars, fossil fuels will face depletion within 40 years. At present, 97% of the energy in Taiwan depends on imports from overseas countries, and the energy crisis is closely related to society, therefore, "energy saving and carbon emission reduction" is an imperative subject. In Taiwan, in an ordinary office building, energy consumption of the air-conditioning system accounts for more than 60% of the total power consumption of the building, thus, effective energy-saving improvement of existing air-conditioning systems is the most direct and effective method for overall energy-saving benefits. This study aimed to improve the air-conditioning system in an office building of D plant in southern Taiwan by applying the primary variable ice water volume and variable cooling water volume system to the chiller of the air-conditioning system. The system was supported by a frequency converter, a digital controller, control strategies, and other auxiliary methods. This study also analyzed and investigated the energy-saving benefit of a traditional constant water volume system. The results showed that, if both the primary variable ice water volume and variable cooling water volume system were used, total energy consumption of the air-conditioning system could be saved by 16%
45
Chang, Shun-Chien, and 張舜傑. "Mobile Monitor and Control System for Load Management and Energy Saving Application." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/14102267154970818388.
Повний текст джерелаАнотація:
碩士國立彰化師範大學
電機工程學系
93
This paper implements a mobile monitor and control system for load management and energy saving application. The proposed system is designed using a 32-bit ARM-7 embedded microprocessor system to carry on power data processing and relay control through GPRS mobile communication. In order to provide a cost-effective, wireless, always-connected, two-way data link function capability, the proposed system establishes a remoter monitor and control center to manage power equipment operation data, power parameters and outage signals. To activate the data flow, GPRS is used to handle real time message in two ways, from equipments to the control server, and from operator to the equipments. In this paper, the proposed system configuration is organized with hardware and software implementation. Normal operation and abnormal operation condition for a utility consumer is tested in real time performance. While receiving an outage alarm, the operator can promptly remotely manipulate the outage equipments at his decision. This ARM-7 CPU is operated in �戥Clinux Operation system. In the demonstration, the control server data base receives all equipment static power parameter data and real time operation data. In this paper, the proposed system is successfully built up, and a full function of real time remote operation is tested with data collection, especially at a system outage. This paper verifies the proposed system is useful and effective to power equipment monitor and control in a real time and mobile condition.
46
HSU, HUNG-JUNG, and 許洪榮. "Energy-saving Analysis on a Data Center of Taipei MRT Control Center." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/e4pkz3.
Повний текст джерелаАнотація:
碩士國立臺北科技大學
能源與冷凍空調工程系碩士班
101
MRT control data center is about 1986 planning period, compared with today''s new setting data of the device has been a great difference in the cost of through analysis, planning, and for the most economical use of energy is more sophisticated, so that the overall cost can be effectively reduced. This thesis analyzes carried out by computer simulation CFD assisted planning and design, the device can not be run in an existing power off and should be kept under continuous operation can be simulated and analyzed to adjust, and to assess the optimal air box set temperature conditions, with the energy-saving targets , to meet international standards of energy efficient data centers, from the simulation results forecast future data center energy efficiency improvement potential, thus reducing data center operating costs. In this study, CFD simulation software on the Taipei MRT control type room raised floor data center simulation analysis and study the air box failure on the device temperature impact resistance, and can be contacted by simulation analysis to identify energy-saving strategies.
47
Liu, Yao-Chung, and 劉耀中. "The investigation of the control and energy saving of refrigerant screw compressors." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/74ys76.
Повний текст джерелаАнотація:
碩士國立臺北科技大學
製造科技研究所
95
Due to the coming period of energy shortage, many countries are trying to decrease the energy consumption and to improve the energy efficiency. HVAC occupied a major parts of the total power consumption. In Taiwan, the summer power consumption of HVAC will be occupied about 40%. This paper investigated methods to improve the COP of the middle size of chillers. The research target of this study is the heart of the chiller: Screw Refrigerant Compressor. The paper will also discuss about the COP and power consumption changes between the different capacity regulations. By the new pattern of this document (Taiwan M302638), variable optimization capacity regulator will improve the IPLV about 17.4%, decrease the HVAC power consumption about 14.8%, and the total power consumption about 4.7%. The current study presents the newest generation of VFD screw refrigerant compressor with optimization Vi control.
48
Wang, Jyun-Yang, and 王俊揚. "HVAC Set-point Temperature Control for Energy Saving and Individual User Preference." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/skmmf8.
Повний текст джерела
49
Shen, Wei-Cheng, and 沈瑋呈. "Design and Control of Azeotropic Separationby Energy-Saving Hybrid Extraction-Distillation System." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/62j92p.
Повний текст джерелаАнотація:
碩士國立臺灣大學
化學工程學研究所
107
Design and control of azeotropic mixture separation process by energy-saving hybrid extraction-distillation system was investigated in this thesis. Compared with other separation methods (i.e., azeotropic distillation, extractive distillation and pressure-swing distillation), solvent extraction remains to be one of the most preferable separation methods because the separation is achieved through their relative solubilities in two different immiscible liquid phases without energy usage. Thus, by utilizing a hybrid extraction-distillation separation process, huge economic potential is expectable with the finding of an effective solvent. In this work, two kinds of azeotropic mixture systems were analyzed and discussed, including ethanol/benzene and 2,2,3,3-tetrafluoro-1-propanol/water systems. The thermodynamic models used in both processes not only satisfy the experimental data of ternary liquid−liquid equilibrium, but also precisely predict the behavior of binary vapor-liquid equilibrium, showing the credibility of the simulated processes. In the ethanol/benzene separation system, glycerol was selected as a heavy solvent, which is used to extract ethanol from benzene by the principle of liquid-liquid equilibrium. Since the extract phase inevitably contains some residual benzene and besides, ethanol is not a stable node in the operating distillation region, two alternative distillation sequences was proposed to obtain ethanol product at the purity specification and also purified glycerol for recycling back to the extraction column. Considering the nature of the heavy solvent, heat integration within process streams and operation in vacuum condition were taken into account for the design of the energy-saving cases. Furthermore, the quality control loops were established based on the results of open-loop and closed-loop sensitivity tests without the need of any online composition measurement. It was found that both ethanol and benzene products can be maintained at high purity despite having large feed disturbances. For the separation of 2,2,3,3-tetrafluoro-1-propanol (TFP) and water, using methyl tert-butyl ether (MTBE) or diisopropyl ether (DIPE) as light solvent was proposed. By solvent entrainment, TFP is introduced into the extract phase, while high purity water is removed from the raffinate phase. This process fully utilized the heterogeneity of components to overcome the limitations of distillation boundary, and the feasible density difference of liquid-liquid extraction was also considered for complete economic analysis. Furthermore, in order to perform a more rigorous investigation on the dynamic simulations of this system, several decanters were put in series to simulate the extraction unit in the pressure-driven module. The transient responses of the flow-driven module and the pressure-driven module were analyzed respectively to further explore the dynamic horizon of the hybrid extraction-distillation system.
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Hong, Ke-Wei, and 洪克維. "The Programming Design for Intelligent Control Interface of Intelligent Energy-saving System." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/63348635209877801067.
Повний текст джерелаАнотація:
碩士聖約翰科技大學
電機工程系碩士班
102
The rapid advances in technology cause the highly demanding in energies. The issues such as energy shortages, greenhouse effect are the greatest concerns of every country. Currently, Taiwanese government are promoting the slogan “Energy Conservation & Carbon Reduction” and hopes to encourage citizens turn off the lights or unplug the machines that are not operating, However, the effects are limited. To solve the above problems, the top goal of this thesis is to design a system which can manage electronic equipment automatically and record their function status within a space. In this paper, I have designed a set of intelligent control interface based on energy conservation which can collect the environmental parameters such as temperature, humidity, CO2, Illumination, the information of energy by using outlets, operators and so on through the relay stations in a space, and, then, sends those information to the monitoring system. According to those parameters, the system can make the decision whether to turn on or off electrical equipment. It can improve people's accustomed usage of electricity. The user can use the monitoring interface to see through the environment parameters and the operating conditions of the electronic equipment of each space clearly. The automated management system of the electronic equipment can also be manual by the user-friendly interface to turn on or off the corresponding electronic equipment according to different contexts. The large power consumption devices can be set on a schedule to be uninstalled in the interface. And, the schedule can be set based on the wattage data returning through the wisdom outlet system. If the energy consumption exceeds the particular wattage then the outlets will be short down following the order set by the user. Enterprise can schedule the electronic usage of outlets base on the capacity of electricity contracts in order to avoid the expenditure of exceeding usage. Meanwhile, it can deploy energy usage and improve the effectiveness of energy saving by the automatic adjustment and control system.