Thematische Bibliographien / Heat output from the switchgear

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Auswahl der wissenschaftlichen Literatur zum Thema „Heat output from the switchgear“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 29. Juli 2025

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Zeitschriftenartikel zum Thema "Heat output from the switchgear"

Zhaochuang Zhang. "Research on the Application of Multi-Physics Field Coupling Simulation in the Analysis of Temperature Field of 500kv GIS Circuit Breaker." Journal of Electrical Systems 20, no. 6s (2024): 630–37. http://dx.doi.org/10.52783/jes.2716.

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Gas insulated switchgear (GIS) is a crucial part of any electrical infrastructure. Overheating the conductor on the GIS busbar would reduce the effectiveness of the insulating gas and shorten the life of the device. We then maximize output by fine-tuning the busbar's rotation angle, central distance, and conductor thickness. Dependable electrical systems always include gas insulated transmission lines (GIL) and gas insulated switchgear (GIS). Because of their reduced total cost and greater efficiency in terms of both space use and power transmission, GILs are gradually replacing conventional o

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Yu, Hong, Maoyong Cao, Tanbo Zhu, and Fanming Liu. "Study of Heating Device for Sulfur Hexafluoride Gasification." Sensor Letters 18, no. 2 (2020): 157–63. http://dx.doi.org/10.1166/sl.2020.4201.

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Sulfur hexafluoride (SF6) gas has been used to gas-insulated switchgear (GIS) because of its insulation properties and extinguishing characteristics. The processing of liquid sulfur hexafluoride from cylinders into GIS is endothermic. The processing gas inflation always leads to decrease SF6 gas inflation speed due to the lack of heat supplement and the infiltrated moisture will stick on the GIS equipment, especially at the valve outlet. In the paper, a heater detection device for sulfur hexafluoride (SF6) steel cylinder is developed. The new heater device will monitor and display the specific

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Erickson, Donald C., Gopalakrishnan Anand, and Ellen Makar. "Absorption Refrigeration Cycle Turbine Inlet Conditioning." International Journal of Air-Conditioning and Refrigeration 23, no. 01 (2015): 1550003. http://dx.doi.org/10.1142/s2010132515500030.

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Ambient temperature markedly impacts combustion turbine performance. A typical aeroderivative turbine loses 25% of ISO capacity at 38°C ambient. There are two traditional options to mitigate that degradation: evaporative cooling and mechanical chilling. They boost turbine performance, but consume significant water and/or electric load. Also, the turbine requires separate anti-icing equipment for low ambient temperature operation (less than 4.4°C). This paper describes the Absorption Refrigeration Cycle Turbine Inlet Conditioning (ARCTIC) system that chills or heats the inlet air of a combustio

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Ishak, Sanuri, Chong Tak Yaw, Siaw Paw Koh, Sieh Kiong Tiong, Chai Phing Chen, and Talal Yusaf. "Fault Classification System for Switchgear CBM from an Ultrasound Analysis Technique Using Extreme Learning Machine." Energies 14, no. 19 (2021): 6279. http://dx.doi.org/10.3390/en14196279.

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Currently, the existing condition-based maintenance (CBM) diagnostic test practices for ultrasound require the tester to interpret test results manually. Different testers may give different opinions or interpretations of the detected ultrasound. It leads to wrong interpretation due to depending on tester experience. Furthermore, there is no commercially available product to standardize the interpretation of the ultrasound data. Therefore, the objective is the correct interpretation of an ultrasound, which is one of the CBM methods for medium switchgears, by using an artificial neural network

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Polyakov, Igor V., Randi B. Ingvaldsen, Andrey V. Pnyushkov, et al. "Fluctuating Atlantic inflows modulate Arctic atlantification." Science 381, no. 6661 (2023): 972–79. http://dx.doi.org/10.1126/science.adh5158.

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Enhanced warm, salty subarctic inflows drive high-latitude atlantification, which weakens oceanic stratification, amplifies heat fluxes, and reduces sea ice. In this work, we show that the atmospheric Arctic Dipole (AD) associated with anticyclonic winds over North America and cyclonic winds over Eurasia modulates inflows from the North Atlantic across the Nordic Seas. The alternating AD phases create a “switchgear mechanism.” From 2007 to 2021, this switchgear mechanism weakened northward inflows and enhanced sea-ice export across Fram Strait and increased inflows throughout the Barents Sea.

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Zeng, Jixiang. "Typical Partial Discharge Signal Acquisition and Feature Extraction in High Voltage Switchgear." International Journal of Computer Science and Information Technology 3, no. 3 (2024): 307–23. http://dx.doi.org/10.62051/ijcsit.v3n3.32.

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With the progress of power system technology, how to effectively evaluate the reliability of high-voltage switchgear equipment has become an important part of power grid power supply and industrial distribution. Switchgear is used in power system power generation, transmission, power distribution, power conversion and consumption play a role in switching, control or protection, voltage level in 3.6kV-550kV electrical products, usually contains a variety of switches, circuit breakers, contactors and other components. In the process of use, due to various reasons, partial discharge may occur. Pa

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Juma'a, Hameed, and Thamir Atyia. "Design and Implementation of multi-level inverter for PV system with various DC Sources." NTU Journal of Renewable Energy 5, no. 1 (2023): 24–33. http://dx.doi.org/10.56286/ntujre.v5i1.554.

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Multilevel inverters (MLI) are now favored over conventional transformers due to higher output voltage levels and lower harmonic distortions. In this study, a 45-level and 39-level inverter with lower power switchgear number was constructed. The 16-switch single-phase MLI inverter is generated, simulated, and used realistically. The simulation system uses a control method called sinusoidal pulse width modulation (SPWM). The output voltage from the simulation includes total harmonic distortion (THD). THD values of 45 and 39 level output voltage simulation are 2.59% and 2.98% respectively. The s

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Gao, Bao-Ming, Zheng-Yu Li, Jin-Wen Gao, Hao Liang, Zhi Yan, and Yi-Dan Hu. "The Simulation Study on Temperature Field Distribution of 220 kV Gas Insulated Switchgear." Journal of Nanoelectronics and Optoelectronics 16, no. 5 (2021): 797–805. http://dx.doi.org/10.1166/jno.2021.2998.

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Under working conditions, the conductive rods in the GIS flow through the power frequency alternating current. Due to the coupling effect of the magnetic field and electric field between the metal aluminum shell and the conductive rod, induced eddy currents are generated in the metal shell of the GIS. The heat generated by the current heating effect of the GIS conductive rod and the eddy current loss of the metal casing will cause the temperature rise of GIS equipment. Due to the limited volume, the heat dissipation capacity of GIS is poor. Excessive temperature rise will accelerate the insula

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Kapjor, Andrej, Peter Durcansky, and Martin Vantuch. "Effect of Heat Source Placement on Natural Convection from Cylindrical Surfaces." Energies 13, no. 17 (2020): 4334. http://dx.doi.org/10.3390/en13174334.

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Placement of heat source can play a significant role in final heat output, or heat source effectivity. Because of this, there is a need to analyze thermal fields of the heat exchange system by natural convection, where the description by criterion equations is desired, as the net heat output from tubes can be quantified. Based on known theoretical models, numerical methods were adapted to calculate the heat output with natural air flow around tubes, where mathematical models were used to describe the heat transfer more precisely. After validation of heat transfer coefficients, the effect of wa

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Fang, Weixing, Guojin Chen, Wenxin Li, et al. "A PRPD-Based UHF Filtering and Noise Reduction Algorithm for GIS Partial Discharge." Sensors 23, no. 15 (2023): 6763. http://dx.doi.org/10.3390/s23156763.

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The online detection of partial discharge (PD) in gas-insulated switchgear (GIS) is a crucial and powerful tool for maintaining their reliability. However, extracting weak discharge signals from strong disturbances is a significant challenge. The presence of noise can hamper the identification and localization of PD types, making the extraction of pure PD signals the focus of current research. This paper proposes a PRPD-based PD filtering algorithm that analyzes interference using the output information from PRPD and sets threshold parameters for noise reduction processing. This method is main

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Dissertationen zum Thema "Heat output from the switchgear"

Rusetskyi, Ivan. "Vzduchem chlazený rozvaděč." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443249.

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During the operation of electrical equipment, heat is generated due to internal losses of the equipment. If these devices are located in the switchgear, the heat output of the individual elements adds up and the temperature in the switchboard can rise to values when the reliability of the individual devices decreases. One of the ways to prevent increase the temperature inside the switchgear from rising to critical values is to solve its proper ventilation (cooling with ambient air). By natural convection or using a ventilator. This diploma thesis deals with the most reliable way of cooling Uni

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Liu, Lei. "Heat transfer from a convecting crystallizing, replenished magmatic sill and its link to seafloor hydrothermal heat output." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/37215.

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Hydrothermal systems at oceanic spreading centers play an important role in the composition of seawater, the formation of ore deposits, the support of microbial and macrofaunal ecosystems, and even for the development of life on early earth. These circulation systems are driven by heat transport from the underlying magma chamber, where latent heat of crystallization and sensible heat from cooling are transferred by vigorous, high Rayleigh number convection through a thin conductive boundary layer. The traditional study of magmatic-hydrothermal systems is primarily based on the time-series o

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Bücher zum Thema "Heat output from the switchgear"

Cross, Susan. Tracing time -- Tracing threads. University of Edinburgh, 2024. http://dx.doi.org/10.2218/ed.9781836450351.

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Tracing time – Tracing threads is a collection of enamelled jewellery, comprised of three neckpieces and eight brooches. The output was inspired by Elizabethan blackwork, a 16th–17th century embroidery technique that used a black thread made from an iron-based dye. This work was produced for an exhibition, Heat Exchange II – Artists Exchanging Energy (September 2015 – July 2016) which toured four international venues in the UK and Germany. The output was subsequently exhibited at Schmuck –Munich Jewellery Week 2017, the annual International Trade Fair for the Skilled Trades at the Internationa

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Wilton, Niall, Brian J. Anderson, and Bruno Marciniak. Anatomy, physiology, and pharmacology in paediatric anaesthesia. Edited by Jonathan G. Hardman and Neil S. Morton. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780199642045.003.0069.

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Anaesthesia for children is tempered by changes that occur during both growth and development. Drug dose is affected by size and clearance maturation processes as well as the changing body composition that occurs with age. All organ systems undergo these maturation changes and most are complete within the first few years of life. Normal physiological variables in infancy and childhood are quite different from adults. The central nervous, cardiovascular, and respiratory systems are particularly important. Cerebral immaturity and plasticity impacts sensitivity to drugs, pain responses, and behav

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Mehta-Bhatt, Purvi, and Pier Paolo Ficarelli. Livestock in the Food Debate. Edited by Ronald J. Herring. Oxford University Press, 2014. http://dx.doi.org/10.1093/oxfordhb/9780195397772.013.024.

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Livestock is an integral part of agriculture and a prominent source of food. It contributes 40% of the global value of agricultural output and supports the livelihoods and food security of almost a billion people, especially in developing countries. There is nothing new in amalgamation of farm animals in agriculture system, but the debate questioning its existence and relevance is a rather new drift. The politics, the climate debate, the nutrition debate around livestock sector, especially levitating from industrial countries, needs to be sympathetic toward the millions of people, especially i

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Buchteile zum Thema "Heat output from the switchgear"

Fet, Annik Magerholm, Cecilia Haskins, and Magnus Sparrevik. "Input-Output Analysis and Cleaner Production." In Business Transitions: A Path to Sustainability. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-22245-0_4.

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AbstractThis chapter gives an overview of the basic principles for analysing material flows for production processes. This type of analysis is based on a calculation of materials going in and out of a process. Typical materials to be accounted for are energy, raw materials and other supporting materials. Likewise, outputs from a production process are waste of different types, emissions to air, water and soil, as well as noise, radiation, vibrations, and loss of heat. In an input-output analysis, the by-products from the process are also accounted for. The chapter also explains the principles

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Zhang, Yecheng, Qimin Zhang, Yuxuan Zhao, Yunjie Deng, Feiyang Liu, and Hao Zheng. "Artificial Intelligence Prediction of Urban Spatial Risk Factors from an Epidemic Perspective." In Computational Design and Robotic Fabrication. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-8637-6_18.

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AbstractFrom the epidemiological perspective, previous research methods of COVID-19 are generally based on classical statistical analysis. As a result, spatial information is often not used effectively. This paper uses image-based neural networks to explore the relationship between urban spatial risk and the distribution of infected populations, and the design of urban facilities. We take the Spatio-temporal data of people infected with new coronary pneumonia before February 28 in Wuhan in 2020 as the research object. We use kriging spatial interpolation technology and core density estimation

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Ashraf, R. J., Jonathan D. Nixon, and J. Brusey. "Multi-objective Optimisation of a Wastewater Anaerobic Digestion System." In Springer Proceedings in Energy. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-30960-1_25.

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AbstractThis paper looks at multi-objective optimisation of a wastewater AD system where the model is demonstrated for a case study plant. Anaerobic Digestion Model No. 1 (ADM1) was used to predict biogas yields from the digester. Interviews, with plant owners, and plant data were used to identify the objective functions and decision variables. The decision variables were defined to be the substrate feeding rate for each of the digesters and the ratio of biogas sent between a combined heat and power (CHP) plant and a biogas upgrading unit (BUU). The objectives set were to maximise the overall

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Zhang, Xueyan, Yixuan Zhang, Ye Yang, Chengcheng Deng, and Jun Yang. "Uncertainty Analysis and Sensitivity Evaluation of a Main Steam Line Break Accident on an Advanced PWR." In Springer Proceedings in Physics. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1023-6_30.

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AbstractA RELAP5 input model was established for a scaled-up facility simulating China's Advanced Passive Water Reactor with passive safety features. The simulation was performed to reproduce a Main Steam Line Break (MSLB) scenario at steam line connected to one Steam Generator. The figure of merit selected in this accident scenario includes the maximum containment pressure, mass and energy release to containment. Driving factors of this response function include Passive Residue Heat Removal material thermal conductivity, Pressurizer temperature, and broken steam line temperature.To achieve an

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Pineda-Martos, Rocío, Maria-Beatrice Andreucci, Cristina S. C. Calheiros, et al. "Nature-Based Solutions for Sustainable Urban System Transformation: Addressing Circularity in Building System Recovery." In Lecture Notes in Civil Engineering. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-57800-7_26.

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AbstractUrban system transformation in view of sustainability is fundamental for efficient adaptation and mitigation of challenges faced by cities. Sustainable urban transitions, under the umbrella of circular economy, are key to effectively addressing future challenging scenarios and their impacts. The adoption of nature-based solutions (NBS) for circular resource management can provide beneficial ecosystem services to the urban built environment while promoting the conservation and reuse of resources within the urban cycle. The Circular City framework outlined the use of NBS to tackle challe

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Giovanardi, Matteo, Matteo Trane, and Riccardo Pollo. "Environmental Sensing and Simulation for Healthy Districts: A Comparison Between Field Measurements and CFD Model." In The Urban Book Series. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-29515-7_82.

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AbstractAtmospheric Particulate Matter (PM) is considered among the main risk factors for cardiovascular, respiratory, and carcinogenic diseases. Besides, heat waves accounted for 68% of natural hazard-related deaths in Europe between 1980 and 2017 and many climate models project a global rise in climate hazards. Environmental Monitoring (EM) is a key resource to control health determinants, addressing threats arising from unhealthy external conditions. Forecasting models may need data coming from pervasive distributed sensor networks and computational simulations. Moreover, district-scale Env

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Dou, Zhiyi, Waishan Qiu, Wenjing Li, and Dan Luo. "Evaluation Process of Urban Spatial Quality and Utility Trade-Off for Post-COVID Working Preferences." In Computational Design and Robotic Fabrication. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-8637-6_19.

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AbstractThe formation of cities, and the relocation of workers to densely populated areas reflect a spatial equilibrium, in which the higher real consumption levels of urban areas are offset by lower non-monetary amenities [1]. However, as the society progress toward a post-COVID stage, the prevailing decentralized delivery systems and location-based services, the growing trend of working from home, with citizens’ shifting preference of de-appreciating densities and gathering, have not only changed the possible spatial distribution of opportunities, resources, consumption and amenities, but al

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B. Dehankar, Prashant. "Assessment of Augmentation Techniques to Intensify Heat Transmission Power." In Heat Exchangers. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.101670.

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The heat exchanger detects heat between two processes of liquids in the chemical, petrochemical, food, beverage, and hot metals, and so on. Although the required heat transfer calculations and pressure reductions are achieved with a two-pipeline temperature switch (DPHE), the optimization of the heat transfer parameter is used to measure laboratory test settings. This will allow you to build a DPHE model with twisted tapes and mimic the ASPEN PLUS and work it out by trying to scale the lab that has already been produced and standardized for DPHE. Parameter values for this study range from 0.02

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B, Muthuraj, Sundramoorthi S, Vasudevan V, Jessica Angelyn J, and Raveena R. "Energy Scavenging from Triaxial Tactile Sensing and Peltier Effect Sensing System." In Intelligent Systems and Computer Technology. IOS Press, 2020. http://dx.doi.org/10.3233/apc200128.

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In the recent past there has been a significant increase in the research on vibration-based energy harvesting. Wherever mechanical movement exists, a lot of heat and vibration energy is wasted which could be used and converted as a supplement to the energy requirements. Towards this objective this project aims to provide a general theory that can be used for generating electricity from vibrating as well as heat body and store the acquired energy using advanced component called the super capacitor. A combination of Cantilever beam and MMA sensor is used for the sensing vibratory motion and the

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Ahmad Jamil, Muhammad, Talha S. Goraya, Haseeb Yaqoob, Kim Choon Ng, Muhammad Wakil Shahzad, and Syed M. Zubair. "Exergoeconomic and Normalized Sensitivity Analysis of Plate Heat Exchangers: A Theoretical Framework with Application." In Heat Exchangers [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.99736.

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Heat exchangers are the mainstay of thermal systems and have been extensively used in desalination systems, heating, cooling units, power plants, and energy recovery systems. This chapter demonstrates a robust theoretical framework for heat exchangers investigation based on two advanced tools, i.e., exergoeconomic analysis and Normalized Sensitivity Analysis. The former is applied as a mutual application of economic and thermodynamic analyses, which is much more impactful than the conventional thermodynamic and economic analyses. This is because it allows the investigation of combinatory effec

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Konferenzberichte zum Thema "Heat output from the switchgear"

Sempuga, Baraka C., and Selusiwe Ncube. "Biogas Valorization from a Process Synthesis Perspective: Heat and Work Integration to Maximize CO2 Conversion." In Foundations of Computer-Aided Process Design. PSE Press, 2024. http://dx.doi.org/10.69997/sct.129660.

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Biogas is often considered as a source of renewable energy, for heat and power production. However, biogas has greater promise as a source of concentrated CO2 in addition to methane, making it a rich supply of carbon and hydrogen for the generation of fuel and chemicals. In this work, we use the concept of attainable region in the enthalpy-Gibbs free energy space to identify opportunities for effective biogas valorization that maximizes the conversion of CO2. The AR concept allows us to study a chemical process without knowing the exact reaction mechanism that the species in the process use. D

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Creary, Andron, Matthew F. King, Matthew Langston, Cable Kurwitz, Paul Nelson, and Fatma Yilmaz. "Time Domain Analysis of the Temperatures in an Electrical Auxiliary Building Room." In 17th International Conference on Nuclear Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/icone17-75720.

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A computational fluid dynamics (CFD) model has been developed to predict air temperatures within the switchgear room environment of a nuclear plant’s Electronics Auxiliary Building (EAB). In order to validate the CFD model output, a scale model experiment has been developed using an analytical model to properly scale important EAB room parameters to allow small scale experiments to be performed for validation of the CFD model. The focus of this paper is the development of the methodology used to accurately predict the bulk air temperature or the EAB room. The CFD model is compared to a simple

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Sun, Shuo, Li-an Chen, Yi-min You, and Zong-xiong Ma. "Thermal analysis of switchgear using FEM considering the heat from the main circuit." In 2017 4th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST). IEEE, 2017. http://dx.doi.org/10.1109/icepe-st.2017.8188952.

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Woods, Melvin, Walter Bryzik, and Ernest Schwarz. "Heat Rejection from High Output Adiabatic Diesel Engine." In International Congress & Exposition. SAE International, 1992. http://dx.doi.org/10.4271/920541.

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Klein, A. C., L. L. Zahm, S. E. Binney, et al. "Anomalous heat output from Pd cathodes without detectable nuclear products." In Anomalous nuclear effects in deuterium/solid systems. AIP, 1991. http://dx.doi.org/10.1063/1.40696.

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Ibrahim, O., P. Zimmermann, C. Hirsch, T. Sattelmayer, B. Gerhard, and C. Steinbach. "A Microturbine Operating With Variable Heat Output." In ASME Turbo Expo 2004: Power for Land, Sea, and Air. ASMEDC, 2004. http://dx.doi.org/10.1115/gt2004-53011.

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The concept of variable heat output using a recuperator bypass has been studied on a microturbine. The target of this research is to quantify to which extent variable heat output is possible using an existing microturbine design. In the paper we compare the predicted and measured performance of the system as well as present and discuss the change of NOx emissions resulting from overfiring the microturbine combustor when reducing the air preheating temperature in bypass mode. We clarify which choice of bypass is suitable considering in particular the recuperator thermo-mechanical loading. We sh

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Hrabovský, Peter. "Measurement of Heat Output of a Loop Heat Pipe with Radiation Heating." In 2nd International Conference on Research in Science, Engineering and Technology. Acavent, 2019. http://dx.doi.org/10.33422/2nd.icrset.2019.11.787.

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The paper focuses on the ways of heat transfer due to the phase-phase change from liquid to gaseous and vice versa. Described herein are heat transfer devices through a heat pipe and methods for transferring heat from a heat source to a point of consumption. A heat pipe is a device described in the literature as a material with more than 100 times higher thermal conductivity than copper. A heat pipe is an energy-efficient device without the need for an electrically powered element (circulation pump). The aim of this experiment is to construct a loop heat pipe device. Construction of the coolin

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Příhoda, Miroslav, Jozef Vlček, Marek Velička, Mária Čarnogurská, and René Pyszko. "Heat output of the recuperator for preheating natural gas from a mobile container device." In THE MEETING OF DEPARTMENTS OF FLUID MECHANICS AND THERMOMECHANICS (35MDFMT): Proceedings of the 35th Meeting of Departments of Fluid Mechanics and Thermomechanics. Author(s), 2016. http://dx.doi.org/10.1063/1.4963038.

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Patel, Pankaj, Vishnu Prajapati, and Amit Modi. "Better Power Generation From Gas Turbine Along With Improved Heat Rate." In ASME Turbo Expo 2003, collocated with the 2003 International Joint Power Generation Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/gt2003-38842.

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Performance of a Gas Turbine is largely dependent on inlet air temperature. Gas Turbines are constant volume machines. At a given shaft speed they always move the same volume of air. But the power output of a turbine depends on the flow of mass through it. This is precisely the reason why on hot days, when air is less dense, power output falls off. A rise of one degree Centigrade temperature of Inlet air decreases the power output by 1% and at the same time heat rate of the turbine also goes up. This is a matter of great concern to power producers. Many techniques have been developed to cool I

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Cho, Hyun Su, and Sung Won Park. "A Study on the Heat Transfer Characteristics in Busbars With Various Shape and Arrangement for the Industrial Switchgear." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-39062.

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In this study, heat transfer analyses of copper bus bars which are installed in industrial switchgear have been conducted in order to obtain the heat transfer correlations for cooling design. The numerical analysis of temperature rise phenomena of copper busbars is carried out using a CFD (Computational Fluid Dynamics) code with various installation conditions under natural convection. The temperature rise test of copper busbars is conducted to provide useful database for verification of numerical analysis. Particularly various geometry and arrangement conditions such as number of parallel bus

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Berichte der Organisationen zum Thema "Heat output from the switchgear"

Du, Xinming, Elaine S. Tan, Yesim Elhan-Kayalar, and Yasuyuki Sawada. Economic Impact of COVID-19 Containment Policies: Evidence Based on Novel Surface Heat Data from the People’s Republic of China. Asian Development Bank, 2022. http://dx.doi.org/10.22617/wps220243-2.

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This paper uses spatially granular surface urban heat island (SUHI) data to quantify the impact of COVID-19-related containment policies on economic output in the People’s Republic of China (PRC). Governments have adopted various policies and measures to control the spread of coronavirus disease (COVID-19). Results of the study suggest containment measures in the PRC decreased SUHI in locked cities marginally yet generated positive and negative spillover effects in unlocked cities, with positive effects dominating. The paper also notes that initial experiences helped inform the management of c

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Guerrero Compeán, Roberto. Weather and Welfare: Health and Agricultural Impacts of Climate Extremes, Evidence from Mexico. Inter-American Development Bank, 2013. http://dx.doi.org/10.18235/0011450.

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Using data for all 2,454 municipalities of Mexico for the period 1980-2010, this paper analyzes the relationship between exposure to extreme temperatures and precipitation and death, as well as the relationship between severe weather and agricultural income and crop production in the country. It is found that extreme heat increases mortality, while the health effect of extreme cold is generally trivial. Precipitation extremes seem to affect the agricultural system, but their impact on mortality is ambiguous. More specifically, exchanging one day with a temperature of 16-18 °C for one day with

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Lawson. L51597 Feasibility Study of New Technology for Intake Air Filtration. Pipeline Research Council International, Inc. (PRCI), 1989. http://dx.doi.org/10.55274/r0010105.

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Inlet air filters are widely used to remove solids and liquid droplets from the ambient air before it enters the compressor of a gas turbine. Clean inlet air provides many advantages: Less corrosion of the compressor and of gas-path hot parts, such as the turbine, decreased compressor fouling, less erosion of the compressor bladeThese in turn prevent deterioration of output and heat rate, and reduce maintenance costs. Compressor fouling is caused by the ingestion of substances that deposit and adhere to blade surfaces, resulting in reduced aerodynamic efficiency and decreased available output.

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Raj, Phani K. DTRS56-04-T-0005 Fires in an LNG Facility - Assessments, Models and Risk Evaluation. Pipeline Research Council International, Inc. (PRCI), 2006. http://dx.doi.org/10.55274/r0011800.

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The models used at present to evaluate the potential hazard areas around large LNG fires were developed with field test data from smaller diameter (1.8 m to 15 m) fires. These models are, however, applied to predict hazard distances from fires much larger in size compared to the experimental fires. Recent publication of the results from a series of tests conducted in 1987 with 35 m diameter LNG fires indicates that large LNG fires tend to generate significant amount of black soot. The black soot is postulated to be generated from incomplete and inefficient combustion of fuel vapors due to redu

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Brosh, Arieh, David Robertshaw, Yoav Aharoni, Zvi Holzer, Mario Gutman, and Amichai Arieli. Estimation of Energy Expenditure of Free Living and Growing Domesticated Ruminants by Heart Rate Measurement. United States Department of Agriculture, 2002. http://dx.doi.org/10.32747/2002.7580685.bard.

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Research objectives were: 1) To study the effect of diet energy density, level of exercise, thermal conditions and reproductive state on cardiovascular function as it relates to oxygen (O2) mobilization. 2) To validate the use of heart rate (HR) to predict energy expenditure (EE) of ruminants, by measuring and calculating the energy balance components at different productive and reproductive states. 3) To validate the use of HR to identify changes in the metabolizable energy (ME) and ME intake (MEI) of grazing ruminants. Background: The development of an effective method for the measurement of

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Wolfenson, David, William W. Thatcher, and James E. Kinder. Regulation of LH Secretion in the Periovulatory Period as a Strategy to Enhance Ovarian Function and Fertility in Dairy and Beef Cows. United States Department of Agriculture, 2003. http://dx.doi.org/10.32747/2003.7586458.bard.

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The general research objective was to increase herd pregnancy rates by enhancing corpus luteum (CL) function and optimizing follicle development, in order to increase conception rate and embryo survival. The specific objectives were: to determine the effect of the duration of the preovulatory LH surge on CL function; to determine the function of LH during the postovulatory period on CL development; to optimize CL differentiation and follicle development by means of a biodegradable GnRH implant; to test whether optimization of CL development and follicle dynamics in timed- insemination protocol

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Analysis of Recompression-Regeneration sCO 2 Combined Cycle Utilizing Marine Gas Turbine Exhaust Heat: Effect of Operating Parameters. SAE International, 2022. http://dx.doi.org/10.4271/2022-01-5059.

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Gas turbines are fast being explored to replace the existing steam or diesel-based power packs to propel marine transportation. Marine gas turbines have already come to power high-speed marine vessels transporting perishable goods as well as high-speed naval fleets. This article investigates the potential of gas turbine to be made hybrid with supercritical recompression-regeneration carbon dioxide (CO2) cycle drawing thermal energy from the exhaust of marine gas turbines. The recompression unit acts as the topping cycle and the regeneration unit acts as the bottoming cycle of the proposed comb

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