Academic literature on the topic 'Changeable heat load'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Changeable heat load.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Journal articles on the topic "Changeable heat load"
1
Трушляков, Євген Іванович. "МЕТОДОЛОГИЧЕСКИЙ ПОДХОД К ЭНЕРГОСБЕРЕГАЮЩЕМУ ХЛАДОСНАБЖЕНИЮ СИСТЕМ КОНДИЦИОНИРОВАНИЯ ВОЗДУХА АДАПТАЦИЕЙ К ТЕКУЩИМ КЛИМАТИЧЕСКИМ УСЛОВИЯМ." Aerospace technic and technology, no. 4 (October 14, 2018): 58–62. http://dx.doi.org/10.32620/aktt.2018.4.08.
Full textAbstract:
The methodological approach was suggested to define a rational heat load of the air conditioning system (ACS) with taking into consideration the current climatic conditions of operation. The proposed approach is based on the hypothesis of sharing the current changeable heat load on the relatively stable share as the basic one for choosing installed (designed) refrigeration capacity of the refrigeration machine, operating with high energy efficiency in nominal or similar modes, and unstable heat load, corresponding to ambient air precooling at changeable current temperatures. To prove the methodological approach to defining a rational heat load of the ACS was carried out the analysis of current values of heat loads of the refrigeration machine ACS during cooling ambient air from its changeable current temperature to the temperature of 10, 15 and 20 ºС . It is shown that due to the different rates of annular refrigeration capacity production increment to cover the current heat loads with increasing the installed refrigeration capacity of the refrigeration machine, caused by the changes in heat load according to current climatic conditions during all the year round, it is necessary to choose a such heat load on the refrigeration machine of ACS (its installed refrigeration capacity), that provides a maximum or similar annular refrigeration capacity production at relatively high rates of its increment. Therein, the value of heat load for ambient air precooling is calculated according to remained principle as the difference between the rational total heat load and its basic relatively stable share. The proposed method is useful for defining a basic installed refrigeration capacity of the refrigeration machine of ACS with the accumulation of excessive (unapplied) refrigeration capacity at lowered current heat loads on ACS and its application for ambient air precooling, that is for covering unstable heat load share on ACS
2
Radchenko1, Mykola I., Tadeusz Bohdal2, Andrii M. Radchenko1, Eugeniy I. Trushliakov1, Volodymyr Y. Labay3, and Veniamin S. Tkachenko1. "Innovative air conditioning system with rational distribution of thermal load." Joupnal of New Technologies in Environmental Science 5, no. 3 (September 30, 2020): 62–79. http://dx.doi.org/10.30540/jntes-2020-3.5.
Full textAbstract:
The efficiency of air conditioning (AC) systems depends on the operation of their air coolers at varying heat loads in response to current changeable climatic conditions. The intensity of heat transfer of refrigerant, evaporated inside air coils, drops at the final stage of evaporation, that is caused by drying out the inner wall surface. This results in lowering the overall heat transfer coefficient and reduction of air cooler efficiency in the whole. The concept of overfilling air coils that leads to excluding a dry-out of their inner surface and falling the overall heat transfer intensity at variation of refrigerant flows in response to change of current thermal load on air coolers is developed.
3
Трушляков, Євген Іванович, Андрій Миколайович Радченко, Микола Іванович Радченко, Сергій Анатолійович Кантор, and Веніамін Сергійович Ткаченко. "ПІДВИЩЕННЯ ЕФЕКТИВНОСТІ КОНДИЦІЮВАННЯ ЗОВНІШНЬОГО ПОВІТРЯ СИСТЕМИ КОМБІНОВАНОГО ТИПУ." Aerospace technic and technology, no. 4 (August 31, 2019): 9–14. http://dx.doi.org/10.32620/aktt.2019.4.02.
Full textAbstract:
One of the most attractive reserves of enhancing the energetic efficiency of air conditioning systems is to provide the operation of refrigeration compressors in nominal or close to nominal modes by choosing rational design cooling loads (cooling capacities) and their distribution according to a cooling load behaviour within the overall design (installed) cooling load band to match current changeable climatic conditions and provide close to maximum annual cooling capacity generation according to cooling duties. The direction of increasing the efficiency of outdoor air conditioning in combined central-local type systems by rationally distributing the heat load - cooling capacity of the central air conditioner into zones of variable heat load in accordance with current climatic conditions and its relatively stable value, i.e. cooling capacity required for further air cooling at the entrance to the indoor recirculation air conditioning system is justified. By comparing the values of the excessive production of cold and its deficit within every 3 days for a rational design heat load of the air conditioning system (cooling capacity of the installed refrigeration machine), which provides close to maximum annual production of cold, and the corresponding values of the excess and deficit of cooling capacity in accordance with current climatic conditions during July substantiated the feasibility of accumulating the excess of cooling capacity of a central air conditioner at low current loads and its use for covering cooling deficit at elevated heat loads through pre-cooling the outdoor air. It is developed a scheme of a combined central-local air conditioning system, which includes the subsystems for the outdoor air conditioning in a central air conditioner and the local indoor recirculated air conditioning.
4
Радченко, Роман Николаевич. "ПОЛУЧЕНИЕ КОНДЕНСАТА КАК СОПУТСТВУЮЩЕГО ПРОДУКТА ОХЛАЖДЕНИЯ ВОЗДУХА НА ВХОДЕ ГАЗОТУРБИННОЙ УСТАНОВКИ." Aerospace technic and technology, no. 1 (February 25, 2018): 59–63. http://dx.doi.org/10.32620/aktt.2018.1.06.
Full textAbstract:
The processes of gas turbine unit inlet air cooling with generation of condensate as a subproduct were investigated. The heat-humidity processes in the two-stage air cooler of combined type with the first low temperature cooling stage were water with temperature of about 7 °C as a coolant for precooling air from the changeable ambient temperature to the temperature not lower than 15 °C is used and low temperature cooling stage with a refrigerant boiling at the temperature of 2-4 °C as a coolant for further deep cooling air to the temperature of about 10 °C by utilizing the exhaust gas waste heat in the absorption lithium-bromide chiller as the high temperature cooling stage and refrigerant ejector chiller as the low temperature cooling stage of the combined thermotransformer has been analyzed for daily changing ambient air temperatures and heat loads on the stages as consequence. The processes of generating the condensate as a subproduct of gas turbine unit intake air two-stage cooling were simulated by using the computer simulation programs of the firms-producers of heat equipment for more than twice decreased heat load upon the high temperature cooling stage as compared with a heat load upon the low temperature cooling stage. The data about amount of condensate extracted in each air cooler stage was summed up over a day, three days and July and its temperature was calculated. The results of calculation have shown that the temperature of condensate received in the refrigerant low temperature cooling stage are lower by about 4 °C as compared with its value for high temperature cooling stage with a chilled water temperature of 7 °C from absorption lithium-bromide chiller. It was also shown that inspite of intensive changeable current temperatures of condensate from each and both stages mean weighted values of temperature of condensate from both stages of a combined two-stage air cooler remained nearly unchangeable during days. A conclusion about using the condensate from low temperature cooling stage as a coolant has been made
5
Liu, He Jian, Zai Liang Chen, and Ya Xin Xu. "TH6213 CNC Boring and Milling Machine Spindle System Thermal Equilibrium Analysis." Applied Mechanics and Materials 380-384 (August 2013): 47–50. http://dx.doi.org/10.4028/www.scientific.net/amm.380-384.47.
Full textAbstract:
The thermal deformation of machine tools has a great influence on machining accuracy. Studied on thermal effects of TH6213 CNC boring and milling machine spindle system, bearing heat grows with load and boring spindle extending length, and brings about a changeable temperature difference, which is hard to reduce. A subsection cooling scheme was proposed to reduce the spindle system temperature as well as the temperature difference to reduce the thermal deformation effects.
6
Weng, Chien-Lun, and Lih-Jen Kau. "Design and Implementation of a Low-Energy-Consumption Air-Conditioning Control System for Smart Vehicle." Journal of Healthcare Engineering 2019 (August 27, 2019): 1–14. http://dx.doi.org/10.1155/2019/3858560.
Full textAbstract:
About 7% of people’s daily time is spent in taking vehicles between office and home. Besides, with the improvement of the living standard in today’s society, people’s requirements for a comfortable environment inside the car are constantly increasing and this must rely on an effective vehicle air conditioner to maintain the comfort of the cabin environment. In general, a vehicle air conditioner uses the air-mixing mode to regulate the temperature control system. In this mode of operation, the compressor needs to work continuously, which is extremely energy consuming. The vehicle’s air conditioner is greatly affected by the inner and outer heat load, which are generated therein. Furthermore, the heat load is instantly changeable. Therefore, only when the controller can adapt to the feature of heat load, then we can find the optimal control method, thus enabling the vehicle’s air conditioner to interact with the actual heat load to supply the balanced cooling capacity and, as a result, create the most comfortable environment inside the cabin with minimum energy consumption. For this purpose, we bring up in this paper a low-energy-consumption smart vehicle air-conditioning control system to detect total heat load, which can change the vehicle’s air-conditioning capacity mode to maintain the average temperature at 25.2°C∼26.2°C and the average humidity at 46.6%∼54.4% in the cabin. When the inner heat load is stable, the rest times of the compressor can reach 16∼23 times per hour, which attains a rate of fuel saving around 21%∼28%. With the proposed architecture, the purpose of the low-energy-consumption vehicle air-conditioning system can be achieved, which, at the same time, creates a comfortable environment inside the cabin.
7
Vereshchagin, S. B. "Methodology for conducting climatic tests in cabins and habitable compartments of wheeled and tracked vehicles." Izvestia MGTU MAMI 1, no. 3 (2020): 2–6. http://dx.doi.org/10.31992/2074-0530-2020-45-3-2-6.
Full textAbstract:
In the course of many years of climate research and analysis of research works by other authors, a number of methodological errors were identified that did not allow obtaining objective and reliable research results in some cases. As a result of evaluating a number of research materials of domestic and foreign researchers, it was revealed that the real temperature and humidity characteristics are hidden inside the habitable compartments. This was done, most likely due to a commercial interest in distorted research results. Since the beginning of the 90s of the twentieth century, the author often had to take part in works of improving the climatic characteristics inside the inhabited compartments of special wheeled and tracked vehicles, but the vehicles were completely unsuitable for installing climate control systems by their design and did not have free power to ensure their mechanical and electrical drive. It is especially difficult to provide the required climatic characteris-tics in the habitable compartments at high temperatures. This is due to the fact that the cost of cold in the habitable compartment is 5−7 times higher than the cost of heat, besides, the units used to generate cold require greater precision and quality of manufacture compared to other units, and large vibration and shock loads lead to damage system parts and assemblies and refrigerant leaks. The studies were carried out to objectively assess the heat fluxes entering the cabins and habitable compartments. The results were compared with previous methodological developments. In the pro-cess of research it was determined that the main heat load of the cabins and habitable compartments is borne by solar radiation, penetrating into the habitable compartment through transparent fences. The recommendations for climatic testing of full-size vehicles and cabin prototypes based on the results of field studies were given. Full-scale climatic tests are inherently the most difficult, since they depend on changeable weather, and in many cases cannot be objectively reproduced in a cli-matic chamber.
8
Monty, Arnaud, Layla Saad, and Grégory Mahy. "Bimodal pollination system in rare endemic Oncocyclus irises (Iridaceae) of Lebanon." Canadian Journal of Botany 84, no. 8 (August 2006): 1327–38. http://dx.doi.org/10.1139/b06-081.
Full textAbstract:
Pollination systems based on indirect rewards, such as heat and shelter, have seldom been studied. Plant–pollinator interactions were characterized in Iris cedretii Dinsmore ex Chaudhary and Iris sofarana subsp. kasruwana Dinsmore ex Chaudhary, rare endemic Lebanese Oncocyclus irises exhibiting potential adaptation to shelter pollination. Despite a diversity of floral visitors (47 species), only two groups of Anthophoridae male bees ( Xylocopa spp. and Eucera spp.) could be considered as efficient pollinators on the basis of frequency of visits, visiting behaviour, and pollen load. Lebanese Oncocyclus irises showed a bimodal pollination system with (1) diurnal visits at low rates but with potentially large pollen transfers by Xylocopa bees, exhibiting a foraging-like behaviour, principally during warm periods of the day and (2) sheltering, especially Eucera male bees, during night and day when the weather is changeable. Refuge occurrence in flowers was more important during the night (27%) than during the day (12%) and, for daytime, during cloudy or windy than sunny conditions. It also varied depending on the exposure of floral tunnels. Visitation rates of both day-visiting Xylocopa and night-sheltering Eucera were negatively associated with an increase of the number of flowers per clump. No experimental evidence was found showing that the principal advantage for male bees to shelter in Iris flowers was to fly earlier in the morning.
9
Radchenko, Roman, Andrii Radchenko, Serhiy Serbin, Serhiy Kantor, and Bohdan Portnoi. "Gas turbine unite inlet air cooling by using an excessive refrigeration capacity of absorption-ejector chiller in booster air cooler." E3S Web of Conferences 70 (2018): 03012. http://dx.doi.org/10.1051/e3sconf/20187003012.
Full textAbstract:
Two-stage Gas turbine unite (GTU) inlet air cooling by absorption lithium-bromide chiller (ACh) to the temperature 15 °C and by refrigerant ejector chiller (ECh) to 10 °C through utilizing the turbine exhaust gas heat for changeable ambient air temperatures and corresponding heat loads on the air coolers for the south Ukraine climatic conditions is analysed. An excessive refrigeration capacity of combined absorption-ejector chiller (AECh) exceeding the current heat loads and generated at decreased heat loads on the air coolers at the inlet of GTU can be used for covering increased heat loads to reduce the refrigeration capacity of AECh. The GTU inlet air cooling system with an ambient air precooling booster stage and a base two-stage cooling air to the temperature 10 °C by AECh is proposed. The AECh excessive cooling capacity generated during decreased heat loads on the GTU inlet air coolers is conserved in the thermal accumulator and used for GTU inlet air precooling in a booster stage of air cooler during increased heat loads. There is AECh cooling capacity reduction by 50% due to the use of a booster stage for precooling GTU inlet ambient air at the expense of an excessive cooling capacity accumulated in the thermal storage.
10
Радченко, Андрій Миколайович, Роман Миколайович Радченко, Сергій Анатолійович Кантор, Богдан Сергійович Портной, and Веніамін Сергійович Ткаченко. "ОХОЛОДЖЕННЯ ПОВІТРЯ НА ВХОДІ ГТУ З ВИКОРИСТАННЯМ РЕЗЕРВУ ХОЛОДОПРОДУКТИВНОСТІ АБСОРБЦІЙНОЇ ХОЛОДИЛЬНОЇ МАШИНИ В БУСТЕРНОМУ ПОВІТРООХОЛОДЖУВАЧІ." Aerospace technic and technology, no. 1 (February 25, 2018): 64–69. http://dx.doi.org/10.32620/aktt.2018.1.07.
Full textAbstract:
The processes of gas turbine unit inlet air cooling by absorption lithium-bromide chiller utilizing the turbine exhaust gas waste heat as athermotransformer has been analyzed for hour-by-hour changing ambient air temperatures and changeable heat loads on the air cooler as consequence. The computer programs of the firms-producers of heat exchangers were used for gas turbine unit inlet air cooling processes simulation. It is shown that at decreased heat loads on the air cooler an excessive refrigeration capacity of the absorption lithium-bromidechiller exceeding current heat loads is generated which can be used for covering increased heat loads on the air cooler and to reduce the refrigeration capacity of the absorption lithium-bromidechiller applied. To solve this task the refrigeration capacity required for gas turbine unit inlet air cooling is compared with an excessive refrigeration capacity of the absorption lithium-bromidechiller exceeding current heat loads summarized during 10 days of July 2015. The system of gas turbine unit inlet air cooling with a buster stage of precooling air and a base stage of cooling air to the temperature of about 15 °C by absorption lithium-bromide chiller has been proposed. An excessive refrigeration capacity of the absorption chiller generated during decreased heat loads on the gas turbine unit inlet air cooler that is collected in the thermal accumulator is used for gas turbine unit inlet air precooling in a buster stage of air cooler during increased heat loads on the air cooler. The results of gas turbine unit inlet air cooling processes simulation proved the reduction of refrigeration capacity of the absorption lithium-bromide chiller applied by 30-40 % due to the use of a buster stage of precooling air at the expanse of an excessive absorptionchiller refrigeration capacity served in the thermal accumulator. So the conclusion has been made about the efficient use of a buster stage of gas turbine unit inlet air cooler for precooling air by using an excessive refrigeration potential of absorption lithium-bromidechiller coolant saved in the thermal accumulator
Dissertations / Theses on the topic "Changeable heat load"
1
Trushliakov, Eugeniy, Andrii Radchenko, Mykola Radchenko, Serhiy Kantor, and Oleksii Zielikov. "The Efficiency of Refrigeration Capacity Regulation in the Ambient Air Conditioning Systems." Thesis, 2020. https://doi.org/10.1007/978-3-030-50491-5_33.
Full textAbstract:
The Efficiency of Refrigeration Capacity Regulation in the Ambient Air Conditioning Systems / E. Trushliakov, A. Radchenko, M. Radchenko, S. Kantor, O. Zielikov // Proceedings of the 3rd Intern. Conf. on Design, Simulation, Manufacturing: The Innovation Exchange «Advances in Design, Simulation and Manufacturing III». – Kharkiv, 2020. – Vol. 244. – P. 343–353.Abstract. The operation of the ambient air conditioning systems (ACS) is characterized by considerable fluctuations of the heat load in response to the current climatic conditions. It needs the analyses of the efficiency of the application of compressors with frequency converters for refrigeration capacity regulation in actual climatic conditions. A new method and approach to analyzing the effectiveness of ACS cooling capacity adjusting by using the compressor with changing the rotational speed of the motor as an example have been developed, according to which the overall range of changeable heat loads is divided into two zones: the zone of ambient air processing with considerable fluctuations of the current heat load, that requires effective refrigeration capacity regulation by the compressor with frequency converters (from 100% rated refrigeration capacity down to about 50%) and not an adjustable zone of reduced refrigeration capacity below 50% rated refrigeration capacity of the compressor. The magnitudes of threshold refrigeration capacity between both zones are chosen according to the rational value of installed (design) refrigeration capacity on the ACS, required for cooling the ambient air to a target temperature that ensures the maximum annual refrigeration capacity production in actual current climatic conditions. The proposed method and approach to the analysis of the efficiency of the refrigeration capacity regulation of the ACS compressor by distributing the overall range of changes in current heat loads allows increasing the efficiency of utilizing the installed refrigeration capacity in prevailing climatic conditions.
2
Radchenko, Andrii, Mykola Radchenko, Eugeniy Trushliakov, Serhiy Kantor, and Veniamin Tkachenko. "Statistical Method to Define Rational Heat Loads on Railway Air Conditioning System for Changeable Climatic Conditions." Thesis, 2019. http://eir.nuos.edu.ua/xmlui/handle/123456789/4323.
Full textAbstract:
Statistical Method to Define Rational Heat Loads on Railway Air Conditioning System for Changeable Climatic Conditions / A. Radchenko, M. Radchenko, E. Trushliakov, S. Kantor, V. Tkachenko // 5th Intern. Conf. on Systems and Informatics (ICSAI). – Nanjing, 2019. – P. 1294–1298A statistical method of defining rational heat loads on railway air conditioning system with taking into account the current changeable heat loads corresponding to current climatic conditions on the route lines has been proposed. According to this method the rational designed heat load on refrigeration machine, matching current changeable climatic conditions on the route lines and providing efficient operation of refrigeration machine of air conditioning system with maximum (close maximum) refrigeration capacity production (refrigeration output) for definite period of operation (monthly, seasonal or annular period) is defined through statistical treatment of data sets of hourly refrigeration capacities corresponding to the current climatic conditions on the route lines by their summation during the operation period for various installed (designed) refrigeration capacities of machine. The method is based on the hypothesis of different rates of refrigeration capacity production increment for the period of operation with increasing the installed refrigeration capacity, that is revealed in slowing down the rate of refrigeration capacity production increment at over increased installed refrigeration capacity. Proceeding from this hypothesis the rational value of heat load on railway air conditioning system is chosen close to the value that corresponds to the maximum refrigeration capacity production for the period of operation. Such rational value of designed heat load on railway air conditioning system provides reduction of refrigeration machine capacity and its cost by 15…20 % as compared with traditional its designing for the maximum heat load. The operation of refrigeration machine in partial modes for enlarged installed refrigeration capacity chosen traditionally – for the maximum heat load needs application of expensive inventor compressors to control motor speed matching current changeable heat loads.
3
Radchenko, M., E. Trushliakov, A. Radchenko, S. Kantor, V. Tkachenko, М. Радченко, Є. Трушляков, А. Радченко, С. Кантор, and В. Ткаченко. "Approach to enhance the energetic efficiency of air conditioning systems by cooling load distribution in ambient air procession." Thesis, 2020. http://eir.nuos.edu.ua/xmlui/handle/123456789/4346.
Full textAbstract:
Approach to enhance the energetic efficiency of air conditioning systems by cooling load distribution in ambient air procession = Підхід до підвищення енергетичної ефективності систем кондиціювання повітря шляхом розподілу холодопродуктивності при обробці зовнішнього повітря / M. Radchenko, E. Trushliakov, A. Radchenko, S. Kantor, V. Tkachenko // Матеріали XI міжнар. наук.-техн. конф. "Інновації в суднобудуванні та океанотехніці". В 2 т. – Миколаїв : НУК, 2020. – Т. 1. – С. 490–500.У загальному випадку весь діапазон холодопродуктивності будь-якої системи кондиціювання повітря включає нестабільний діапазон і порівняно стабільну частину холодопродуктивності для подальшого охолодження повітря. Таким чином, стабільний діапазон холодопродуктивності може бути забезпечений роботою звичайного компресора, в той час як режим із значними коливаннями холодопродуктивності вимагає її модуляції. Пропонований підхід може бути використаний для проектування систем зі змінним потоком хладагента (VRF), забезпечених системою обробки зовнішнього повітря (OAP).
Abstract. In general case, an overall cooling load band of any air conditioning system comprises the unstable cooling load range and a comparatively stable cooling load part for further air cooling. Thus, the stable cooling load range can be covered by operation of conventional compressor, meantime mode with considerable cooling load fluctuation needs load modulation. A proposed method can be adopted for designing Variable Refrigerant Flow (VRF) systems provided with Outdoor Air Processing (OAP) system.
Book chapters on the topic "Changeable heat load"
1
Trushliakov, Eugeniy, Mykola Radchenko, Tadeush Bohdal, Roman Radchenko, and Serhiy Kantor. "An Innovative Air Conditioning System for Changeable Heat Loads." In Lecture Notes in Mechanical Engineering, 616–25. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-40724-7_63.
Full textConference papers on the topic "Changeable heat load"
1
Watanabe, Yutaka, Toru Takahashi, and Masashi Nakamoto. "Dynamic Simulation of Startup Characteristics for the Advanced Humid Air Turbine System." In ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gt2017-64699.
Full textAbstract:
Thermal power generation systems have played an important role to adjust power supply and demand balance in power grid due to the high operational flexibility. It is required for next future thermal power generation systems to have higher thermal efficiency and operational flexibility, not only to reduce CO2 emission but also to cope with the increase of electricity generation by renewable energy sources which are changeable depending on the weather. The Advanced Humid Air Gas Turbine (AHAT) system is expected to meet these requirements and now proceeding with the development by Mitsubishi Hitachi Power Systems Ltd., Central Research Institute of Electric Power Industry (CRIEPI) and Sumitomo Precision Products Co., Ltd. So far, the system concept and cycle performance of the AHAT system were verified by operational tests of a 3MW-class pilot plant and a 40MW-class test facility. However, the characteristics of operational flexibility, such as load following capability and fast startup speed, have not been clarified sufficiently. It is considered that dynamic characteristics analysis is useful to evaluate and improve operational flexibility. On the other hand, CRIEPI is now developing the dynamic analysis tool for thermal power generation systems based on Modelica language using Dymola, in the aim of evaluating operational characteristics of both a new thermal power system and existing thermal power plant. The component models of this tool are basically developed based on mass and energy conservation equations. In this paper, we try to construct the dynamic model using this tool for the startup characteristics analysis and to investigate the possibility of shortening startup speed of AHAT system. First, the validity of the dynamic model of AHAT system was verified compared with the 3MW-class pilot plant operational data. As a result, the simulation result agrees almost well with the operational data and the validity of this dynamic model was confirmed. And next, the startup characteristics in the case of increasing startup load ratio by dynamic simulation were investigated. The simulation result show that it is difficult to achieve the rated power output only by changing startup load ratio because the humidification rate of humidification tower is rate-limiting and the gas turbine exhaust gas temperature reaches the limit value before achieving the rated power output. And it is found that the effects of the water valve operational speed of humidification tower and of the heat capacity of the recuperator are important to shorten the startup time of AHAT system.
2
Radchenko, Andrii, Mykola Radchenko, Eugeniy Trushliakov, Serhiy Kantor, and Veniamin Tkachenko. "Statistical Method to Define Rational Heat Loads on Railway Air Conditioning System for Changeable Climatic Conditions." In 2018 5th International Conference on Systems and Informatics (ICSAI). IEEE, 2018. http://dx.doi.org/10.1109/icsai.2018.8599355.
Full text