Journal articles: 'Congeneration of electric power and heat'

1

Munetoh, Shinji. "The Evolution of Heat-electric Power Generator." Materia Japan 56, no. 3 (2017): 195–98. http://dx.doi.org/10.2320/materia.56.195.

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Basu, Mousumi. "Electric Power and Heat Generation Expansion Planning." Electric Power Components and Systems 48, no. 4-5 (March 15, 2020): 501–11. http://dx.doi.org/10.1080/15325008.2020.1793840.

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Remeli, Muhammad Fairuz, Abhijit Date, Baljit Singh, and Aliakbar Akbarzadeh. "Passive Power Generation and Heat Recovery from Waste Heat." Advanced Materials Research 1113 (July 2015): 789–94. http://dx.doi.org/10.4028/www.scientific.net/amr.1113.789.

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This research presents a passive method of waste heat recovery and conversion to electricity using Thermo-Electric Generator (TEG). For this purpose, a lab scale bench-top prototype of waste heat recovery and conversion system was designed and fabricated. This bench top system consists of the thermoelectric generators (TEGs) sandwiched between two heat pipes, one connected to the hot side of the TEG and the second connected to the cold side of the TEG. A 2 kW electric heater was used to replicate the waste heat. An electric fan was used to provide air into the system. A theoretical model was developed to predict the system performance. The model was found in good agreement with the experimental data.

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Vermesan, Ovidiu, Lars-Cyril Blystad, Reiner John, Marco Ottella, and Egil Mollestad. "High Temperature System Design for Electric and Hybrid Electric Vehicles." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2011, HITEN (January 1, 2011): 000128–33. http://dx.doi.org/10.4071/hiten-keynote2-overmesan.

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The automotive semiconductor market is currently valued at around $10 billion worldwide, and is expected to rise to more than $14 billion by 2014. The steep rise of power modules for hybrid and electric vehicles is not yet included in this prognosis. Electronic systems have been the most rapidly growing element of vehicles in recent years, and this trend rise sharply with the introduction of electric vehicles (EVs) and hybrid electric vehicles (HEVs). The key parameters that determine the suitability of a power device for high temperature environment are the devices maximum allowable junction temperature and its conduction loss. The power devices are cooled to an extent that their junction temperatures do not exceed the maximum allowable value. Increasing the maximum junction temperature allows a higher base plate or heat sink temperature. A higher heat sink temperature, allows a higher ambient air temperature or coolant temperature. The semiconductor devices with low conduction loss will generate less heat, and allows a higher heat sink temperature. The paper presents the developments of a novel 400V IGBT based power module well suitable for electric vehicle applications.

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Meibom, Peter, Juha Kiviluoma, Rüdiger Barth, Heike Brand, Christoph Weber, and Helge V. Larsen. "Value of electric heat boilers and heat pumps for wind power integration." Wind Energy 10, no. 4 (2007): 321–37. http://dx.doi.org/10.1002/we.224.

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HIRATA, Koichi. "Stirling Engines as Electric Power Generators from Waste Heat." Journal of the Institute of Electrical Engineers of Japan 136, no. 9 (2016): 592–95. http://dx.doi.org/10.1541/ieejjournal.136.592.

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Gilfanov, K. H., N. Tien, R. N. Gaynullin, and I. Hallyyev. "Energy efficient heat supply system for electric power facilities." E3S Web of Conferences 124 (2019): 01011. http://dx.doi.org/10.1051/e3sconf/201912401011.

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The aim of the work is to confirm the possibility of creating an energy-saving heat supply system for power facilities by using computer modelling, analysis of the potential use of heat losses of electromagnetic energy in magnetic circuits and windings of transformers of substations, as well as the development of schemes for heat recovery losses for heat supply of power facilities. Computer simulation of electromagnetic and thermophysical processes in the power oil-filled transformer is carried out. Energy losses in windings, hysteresis and eddy currents in the magnetic circuit, as well as temperature and heat flux fields in the longitudinal and transverse sections of the oil-filled power transformer in idle and short-circuit modes were determined. The transformer performance in terms of heat recovery losses was evaluated. The possible volumes of heat extraction for heat supply depending on the power of the transformer are determined. The automated oil-water system of heat recovery of the transformer for heating of electric power facilities is proposed. The significance of the obtained results for the construction industry is to confirm the possibility of creating an energy-saving heat supply system for electric power facilities while maintaining the operational characteristics of the transformer based on computer modelling; the significant potential of using the heat loss of power transformers of substations is shown, an automated heat supply system for electric power facilities is proposed.

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Marlok, Hannes, Andreas Pfeifer, Michael Hötger, and Michael Bucher. "Modular Waste Heat Recovery System with Electric Power Output." ATZheavy duty worldwide 12, no. 2 (June 2019): 30–35. http://dx.doi.org/10.1007/s41321-019-0018-6.

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Marlok, Hannes, Andreas Pfeifer, Michael Hötger, and Michael Bucher. "Modular Waste Heat Recovery System with Electric Power Output." MTZ worldwide 80, no. 11 (October 11, 2019): 78–83. http://dx.doi.org/10.1007/s38313-019-0129-6.

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Long, Hongyu, Ruilin Xu, and Jianjun He. "Incorporating the Variability of Wind Power with Electric Heat Pumps." Energies 4, no. 10 (October 24, 2011): 1748–62. http://dx.doi.org/10.3390/en4101748.

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Zakhidov, R. A., and A. I. Anarbaev. "Application of solar heat sources at thermal electric power plants." Applied Solar Energy 46, no. 1 (March 2010): 66–70. http://dx.doi.org/10.3103/s0003701x10010147.

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Nakaiwa, Masaru, Shigetake Kawasaki, Yuji Naka, Kazuyoshi Baba, and Takeichiro Takamatsu. "Design of electric power generation systems using waste heat energy." Energy Conversion and Management 26, no. 3-4 (January 1986): 277–81. http://dx.doi.org/10.1016/0196-8904(86)90004-x.

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Inozemtsev, V. P., and V. F. Soldatenko. "Engineering refit of the Dorogobuzh Heat and Electric Power Plant." Power Technology and Engineering 42, no. 3 (May 2008): 157–61. http://dx.doi.org/10.1007/s10749-008-0030-y.

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Kharlamova, Tatiana, and Ksenia Osipova. "The state of modern heat power engineering and increasing the economic efficiency of heat supply." MATEC Web of Conferences 245 (2018): 05002. http://dx.doi.org/10.1051/matecconf/201824505002.

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The article analyzes the current state of the Russian heat power engineering and identifies the main problems in its economic development. From the position of an integrated approach, the problems of the Russian heat supply system are divided into three categories: technological, economic and social. The using electricity for the needs of heat supply is determined as an effective way of solution these problems. In this context the electric heat supply is offered as an alternative to the modern heat supply system. The article identifies the main factors of electric heating, showing its economic advantages over other types of heat supply systems. On this basis the authors justify the prospects of electric heating system from the point of view of economic development of the Fuel Energy Complex and the national economy as a whole.

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Zhang, Chun Liang. "Electric Heating Power Optimization of Natural Gas Pipeline." Applied Mechanics and Materials 135-136 (October 2011): 516–21. http://dx.doi.org/10.4028/www.scientific.net/amm.135-136.516.

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After the analysis of gas flow, energy consumption is mainly in the process of heating gas pipeline and natural gas throttle. For this problem, this paper, heat transfer, thermodynamics, computational fluid dynamics are used, the pipeline throttling, convection of natural gas in the pipe and the heat transfer between the gas, wall panels, heating cable, insulation, soil and the atmosphere are all considered, thermal analysis model between the wellhead and the gas gathering station is established, the electric heating power on the gas pipeline is optimized, the optimal electric heating power can be calculated when the temperature of wellhead and gas gathering station is expected to reach are known. The effect of tube diameter, gas volume, surface temperature on the heating power is analyzed.

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Yamaguchi, Munehiro, Sogo Sayama, Hirokazu Yoneda, Kin-ya Iwamoto, Mitsuhiro Harada, Satoru Watanabe, and Kazuo Fukai. "Heat storage-type floor heating system with heat pump driven by nighttime electric power." Heat Transfer - Japanese Research 26, no. 2 (1997): 122–30. http://dx.doi.org/10.1002/(sici)1520-6556(1997)26:2<122::aid-htj6>3.0.co;2-y.

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Qu, Jian, Cheng Wang, Xiaojun Li, and Hai Wang. "Heat transfer performance of flexible oscillating heat pipes for electric/hybrid-electric vehicle battery thermal management." Applied Thermal Engineering 135 (May 2018): 1–9. http://dx.doi.org/10.1016/j.applthermaleng.2018.02.045.

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18

Beigel'drud, G. M. "Treating waste water from heat and electric power plants and state regional power plants." Metallurgist 38, no. 8 (August 1994): 157–60. http://dx.doi.org/10.1007/bf00740905.

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Sangwaranatee, Narong. "The Study of Cook-Stove Thermoelectric Generator Power." Advanced Materials Research 979 (June 2014): 421–25. http://dx.doi.org/10.4028/www.scientific.net/amr.979.421.

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This research studies the alternative way of electricity generating from the waste heat of economy oven by using 4 modules of thermoelectric modules. The hot side of thermoelectric module is attached to the heat plate while the cold side is installed on the rectangular, plate-fin heat exchanger. Variety of system adjustments were used during this study in terms of finding the maximum electric power rate. Adjusting the heating value and the electrical resistance to the thermoelectric was the procedure in this study. From the research, we found out that at the temperature of 200°C on the heat pad, the released maximum electric current was 4.5 W. The percentage of heat converting to electric current was 11.9%, with the 0.84 A and 5.35 V. The efficiency of the economy oven was 23.20%, and comes up to 23.39% while generating power via thermoelectric module.

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Li, Zhong Min, Zhi Li, and Jun Guo. "Determination the Heat Price of a Combined Heat and Power Plant with the Energy Grade Theory." Applied Mechanics and Materials 148-149 (December 2011): 1227–30. http://dx.doi.org/10.4028/www.scientific.net/amm.148-149.1227.

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The combined heat and power plant furnish heat and electric, which are two different quality energy. And benefit returns to electric, benefit returns to heat and their trade off compose three methods to share the cost of the combined heat and power plant. Theory of energy grade is the thermodynamic viewpoint, which is not only considering the energy conservation, but also the energy matching. It takes into account all the quality and quantity of the utilized energy. In the present article, theory of energy grade is applied to analyze the heat usage of heat consumer. That takes the price of electric as basis. This method simplifies the calculation, has the reasonable theory foundation and meets the practice condition. It also reflects the idea of using energy according to the quality and high quality, high price

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Beloborodov, Sergey S., and Aleksey A. Dudolin. "Prospects for Combined Generation of Heat and Electricity at a Combined Heat and Power Plant in a Modern Power System." Vestnik MEI 5, no. 5 (2020): 54–66. http://dx.doi.org/10.24160/1993-6982-2020-5-54-66.

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Given the climatic and geographical conditions of the Russian Federation, the development of cogeneration should become the main line of measures aimed at increasing the energy efficiency and reducing greenhouse gas emissions in the country. However, the implementation of programs for development of renewable energy sources (RES) and nuclear power plants (NPP) entails risks of decreasing the amount of combined generation of electricity and heat by combined heat and power plants (CHPP) in the daily load curve base part. The current state of the wholesale market of electric power is characterized by critical conditions for the existing CHPPs in the first price zone of the wholesale market. The electric power cost formed from competitive power bid (CPB) results is such that the incomes earned by heat generating facilities are insufficient for fully covering the costs of their overhauls and modernization of their equipment. The “old” heat generation facilities, including CHPPs, subsidize the development of combined cycle power plants (CCPPs), RES, hydroelectric power plants (HPPs), and NPPs. The Russian Federation energy system development projects must be elaborated taking into account the results from a multivariate analysis of operational, technical, technological, economic, environmental, and social aspects. The heat supply schemes for cities and municipalities are developed subject to ensuring the preset level of reliability with minimizing its cost for the end customer. The minimum cost of heat supply can only be achieved for the optimal structure of heat and electricity generation capacities. This structure must incorporate equipment able to operate in the base, semi-peak, and peak parts of the daily electric load curve, and provide a power margin for passing seasonal maximums in the consumption of electricity and heat. The main milestones of the establishment and evolution of the energy system of Russia are considered. The main trends are shown along with the problems that have arisen in the operation of cogeneration power facilities in connection with the influence of new energy sources. The experience gained in leading foreign countries that have introduced RES is analyzed, and the influence of these sources on the power system balance is studied. The prospects of using combined electricity and heat generating facilities represented by highly maneuverable small- and medium-capacity gas turbine-based CHPPs in the semi-peak and peak parts of the daily electric load curve are analyzed.

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Karamov, Dmitriy, and Sergey Perzhabinsky. "Adequacy analysis of electric power systems with wind and solar power stations." E3S Web of Conferences 58 (2018): 02019. http://dx.doi.org/10.1051/e3sconf/20185802019.

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We developed a new method of adequacy analysis of electric power systems with wind and solar power stations. There are storage batteries in the electric power system. Various types of storage batteries can be used in electric power systems. They are electrochemical, hydroelectric, heat or air storages. The modelling of wind speed and solar radiation is based on software «Local analysis of environmental parameters and solar radiation». The original combination of modern models of meteorological data processing is used in the software. For adequacy analysis of electric power system, we use nonsingle estimation of electricity sacrifice in random hour. Simulation of random values is carried out by the Monte Carlo method.

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23

Derii, V. O. "Complexes of electric heat generators for the control of electric load of regional power systems." Problems of General Energy 2019, no. 3 (September 24, 2019): 17–23. http://dx.doi.org/10.15407/pge2019.03.017.

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Nikolaev, Y. E., V. N. Osipov, and V. Y. Ignatov. "Calculation methodology of the energy indicators of an self-contained energy complex including gas turbine plants, wind-driven power plant and electric storage cell." Power engineering: research, equipment, technology 22, no. 3 (September 8, 2020): 36–43. http://dx.doi.org/10.30724/1998-9903-2020-22-3-36-43.

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To supply small cities with electric and thermal energy it is proposed to create selfcontained energy complex based on gas turbine plants (GTP), wind generators and electric storage cell. A scheme for the joint operation of these plants is offered, a methodology for calculating the quantitative characteristics of a wind power plant, gas turbines and electric storage cell is developed. Electric storage cell provide coverage the peak portion of the daily electrical load curve. The heat load is ensured by the operation of the waste-heat boiler and the peak boiler. Using the example of a power complex with an electric load of 5 MW and a heat load of 17.5 MW, the generation of electric energy by wind driven power plant and gas turbine plants, the supply of electric energy from electric storage cell, the heat loads of the waste-heat boiler and peak boiler by months of the year are calculated. When the power share of the wind power plant is 0.2, the electric storage cell provide for an annual period from 5.2 to 10.7 % of the daily demand of the electric load schedule. The electric power of the gas turbine plant in winter is reduced to 70 % of the maximum load of the consumer, in summer - up to 55 %. An increase in the relative share of the power of a WDPP reduces the electric capacity of a gas turbine plants, its cost, while the cost of electric storage cell increases.

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Wijaya, I. Ketut. "Effect of Enhanced Air Temperature (extreme heat), and Load of Non-Linear Against the Use of Electric Power." Majalah Ilmiah Teknologi Elektro 14, no. 2 (December 30, 2015): 64. http://dx.doi.org/10.24843/mite.2015.v14i02p12.

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Usage Electric power is very easy to do, because the infrastructure for connecting already available and widely sold. Consumption electric power is not accompanied by the ability to recognize electric power. The average increase of electricity power in Bali in extreme weather reaches 10% in years 2014, so that Bali suffered power shortages and PLN as the manager of electric power to perform scheduling on of electric power usage. Scheduling is done because many people use electric power as the load of fan and Air Conditioner exceeding the previous time. Load of fan, air conditioning, and computers including non-linear loads which can add heat on the conductor of electricity. Non-linear load and hot weather can lead to heat on conductor so insulation damaged and cause electrical short circuit. Data of electric power obtained through questionnaires, surveys, measurement and retrieve data from various parties. Fires that occurred in 2014, namely 109 events, 44 is event caused by an electric short circuit (approximately 40%). Decrease power factors can cause losses of electricity and hot. Heat can cause and adds heat on the conductor electric. The analysis showed understanding electric power of the average is 27,700 with value between 20 to 40. So an understanding of the electrical power away from the understand so that many errors because of the act own. Installation tool ELCB very necessary but very necessary provide counseling of electricity to the community.

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Liu, Fang, and Xiu Yang. "Micro-Grid Economic Operation Contains Electric Boiler." Advanced Materials Research 1070-1072 (December 2014): 1297–301. http://dx.doi.org/10.4028/www.scientific.net/amr.1070-1072.1297.

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When Micro-grid (MG) is accessed into large scale of wind turbines, whose anti-peak-adjusting characteristic will increases difficulty of economic and safe operation about MG. The ability to participate in the system peak-adjustment of micro-turbine will be greatly limited, as the CHP run as “heat-load-based” mode and the electric power outputting depends on heat load demand. So that, installing heat boiler to absorb surplus wind power in the anti-peak-adjusting periods, and to combine with CHP supplying heat energy will decoupling “heat-load-based” constraint, and then the flexible schedulability of MG will be improved. The minimum operating cost of MG is regarded as optimizing object, Genetic Algorithm is used to optimize operational status of each unit in MG, then the heat and electricity comprehensive optimization is realized.

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Li, Xin Yu, Jie Xu, Cao Gu, and Long Liu. "Rechear on Solar-Low Temperature Waste Heat Electric Power Generation System." Advanced Materials Research 171-172 (December 2010): 512–17. http://dx.doi.org/10.4028/www.scientific.net/amr.171-172.512.

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This paper presents our recent research results about a solar-low temperature waste electric power generation system based on Organic Rankine Cycle (ORC) which utilizes solar thermal waste heat at low temperature efficiently. Four organic working fluids such as R13a, isobutene, HFC-245fa and HFC-236ea with boiling points from 247.08K-288.05K are chosen to analyze the performance of the system according to first and second law of thermodynamics under rated conditions. The results show that raising temperatures of high-press gas turbine cannot improve thermal efficiencies of the system obviously, meanwhile the irreversibility of the system increases. And adjusting the intermediate pressure can influence the system's performance importantly. When the reheating pressure reaches the 75%-85% of the critical pressure, the system get the best optimal performance. On the other hand, when the condensate temperature increases, the system thermal performance drops. The higher working fluid boiling points can cause the higher system thermal efficiency.

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Barbaric, Marina, and Drazen Loncar. "Energy management strategies for combined heat and electric power micro-grid." Thermal Science 20, no. 4 (2016): 1091–103. http://dx.doi.org/10.2298/tsci151215081b.

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The increasing energy production from variable renewable energy sources such as wind and solar has resulted in several challenges related to the system reliability and efficiency. In order to ensure the supply-demand balance under the conditions of higher variability the micro-grid concept of active distribution networks arising as a promising one. However, to achieve all the potential benefits that micro-gird concept offer, it is important to determine optimal operating strategies for micro-grids. The present paper compares three energy management strategies, aimed at ensuring economical micro-grid operation, to find a compromise between the complexity of strategy and its efficiency. The first strategy combines optimization technique and an additional rule while the second strategy is based on the pure optimization approach. The third strategy uses model based predictive control scheme to take into account uncertainties in renewable generation and energy consumption. In order to compare the strategies with respect to cost effectiveness, a residential micro-grid comprising photovoltaic modules, thermal energy storage system, thermal loads, electrical loads as well as combined heat and power plant, is considered.

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AKAZAWA, Teruyuki. "Stirling Engines, Their Trend as Electric Power Generators from Waste Heat." Journal of the Institute of Electrical Engineers of Japan 136, no. 9 (2016): 601–7. http://dx.doi.org/10.1541/ieejjournal.136.601.

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HAMAGUCHI, Kazuhiro. "Stirling Engines, Their Future as Electric Power Generators from Waste Heat." Journal of the Institute of Electrical Engineers of Japan 136, no. 9 (2016): 608–12. http://dx.doi.org/10.1541/ieejjournal.136.608.

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Singh, Dileep, Wenhua Yu, David M. France, Taylor P. Allred, I.-Han Liu, Wenchao Du, Bipul Barua, and Mark C. Messner. "One piece ceramic heat exchanger for concentrating solar power electric plants." Renewable Energy 160 (November 2020): 1308–15. http://dx.doi.org/10.1016/j.renene.2020.07.070.

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Roberts, D. E. "Electric heat tracing systems-standards development (IEEE Power Generation Comm. Report)." IEEE Transactions on Energy Conversion 3, no. 3 (September 1988): 536–39. http://dx.doi.org/10.1109/60.8064.

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Liu, Kun, Xiaoyan Zhou, and Hailang He. "Heat Pump Technology Applies on Air-conditioners Impact on Electric Power." Energy and Power Engineering 05, no. 04 (2013): 253–57. http://dx.doi.org/10.4236/epe.2013.54b049.

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Baen, P. R. "Power line carrier systems for electric heat tracing control and monitoring." IEEE Transactions on Industry Applications 24, no. 3 (May 1988): 516–20. http://dx.doi.org/10.1109/28.2905.

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Eladl, Abdelfattah A., and Azza A. ElDesouky. "Optimal economic dispatch for multi heat-electric energy source power system." International Journal of Electrical Power & Energy Systems 110 (September 2019): 21–35. http://dx.doi.org/10.1016/j.ijepes.2019.02.040.

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Min, Gao, and D. M. Rowe. "Optimisation of thermoelectric module geometry for ‘waste heat’ electric power generation." Journal of Power Sources 38, no. 3 (May 1992): 253–59. http://dx.doi.org/10.1016/0378-7753(92)80114-q.

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Gretchikhin, L. I., and A. I. Hutkouski. "Air Heat Pump in Wind Power." ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 63, no. 3 (May 28, 2020): 264–84. http://dx.doi.org/10.21122/1029-7448-2020-63-3-264-284.

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An experimental facility has been developed and manufactured to study the disruptive flow in an air heat pump. The propeller of the heat pump does not produce pulling or pushing forces. The external air flow is created by a high speed propeller perpendicular to the plane of rotation of the heat pump propeller and acts as a ventilator. Herewith, a disruptive flow in the back side of the heat pump propeller is being created and conditions for converting the thermal component of the ventilator air flow into electrical energy by an electric power generator are realized. An aerodynamic model of the flow around the propeller blades of the heat pump in mutually perpendicular airflow has been developed. Experimental studies of the operating propeller as a heat pump, taking into account the friction during rotation of the rotor in the stator of the electric generator, were carried out. In order for the air heat pump to perceive the impacting air flow from the ventilator, it must rotate with minimal power. As a result, for two standard twin-bladed propellers mounted on a 100 W engine under the wind generated by the ventilator which speed is 2.17 m/s the conversion factor was 5.04. As the speed of air flow from the ventilator increased, the conversion coefficient decreased sharply. When placing the two specified propellers on a 300 W motor, the minimum pre-rotation power was 5.7 W. In this case, when an air flow speed is of 1.08 m/s, the conversion coefficient reached only 2.93 and also fell sharply with the increase in the air flow speed. When a three-blade propeller with blades was used on a 300 W motor, then situation has changed dramatically. When the motor with a special propeller with a power of 12.1 W was spun and the air flow was formed at a speed of 3.2 m/s, the conversion coefficient was 12.4. With the reduction in the power of the spinup down to 5.9 W and in the speed of the air flow created by the ventilator to 1.7 m/s, the conversion coefficient increased to 14.9. The theoretical calculation of heat pump conversion coefficient is confirmed by experimental data. The conditions under which this coefficient reaches its maximum value are set. Computer modeling of different designs of heat pump propeller blades was performed. It is demonstrated that an air heat pump is a complex open energy system.

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Valery, Stennikov, Penkovsky Andrey, and Postnikov Ivan. "Hybrid power source based on heat and wind power plants." MATEC Web of Conferences 212 (2018): 02002. http://dx.doi.org/10.1051/matecconf/201821202002.

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The technology of use of electric power of the wind power plants for direct replacement of fuel in the thermal cycles of the heat power plants is offered in the paper. The technology avoids solving the problems of ensuring the quality of electricity and the operational redundancy of the wind power in the power systems, as well as permits combining the achievements of traditional (gas turbine and steam and gas technologies, combined-cycle technologies and heating) and non-traditional renewable energy. The energy and environmental effects from the application of the proposed technology are shown, the technological advantages of the proposed schemes are considered, providing them with a wide scope of practical use both in local and in large power systems. The implementation and development of the proposed technology will allow extending and expanding business for manufacturers of steam turbine and gas turbine equipment, including the transition to the hydrogen power. The proposed technologies are protected by the patent.

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Lee, Ji-Hye, and Je-Se Park. "Optimal Microgrid Operation Considering Combined Heat and Power Generation with Variable Heat and Electric Ratio." Transactions of The Korean Institute of Electrical Engineers 61, no. 10 (October 1, 2012): 1548–53. http://dx.doi.org/10.5370/kiee.2012.61.10.1548.

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Gardner, Douglas T., and J. Scott Rogers. "Joint planning of combined heat and power and electric power systems: An efficient model formulation." European Journal of Operational Research 102, no. 1 (October 1997): 58–72. http://dx.doi.org/10.1016/s0377-2217(96)00221-4.

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Kiviluoma, Juha, and Peter Meibom. "Influence of wind power, plug-in electric vehicles, and heat storages on power system investments." Energy 35, no. 3 (March 2010): 1244–55. http://dx.doi.org/10.1016/j.energy.2009.11.004.

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Bianchi, M., G. Negri di Montenegro, and A. Peretto. "Cogenerative Below Ambient Gas Turbine (BAGT) Performance With Variable Thermal Power." Journal of Engineering for Gas Turbines and Power 127, no. 3 (June 24, 2005): 592–98. http://dx.doi.org/10.1115/1.1707032.

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The use of gas turbine and combined cycle power plants for thermal and electric power generation is, nowadays, a consolidated technology. Moreover, the employment of combined heat and power production, especially for low power requirements, is constantly increasing. In this scenario, below ambient pressure discharge gas turbine (BAGT) is an innovative and interesting application; the hot gases discharged from a gas turbine may be expanded below ambient pressure to obtain an increase in electric power generation. The gases are then cooled to supply heat to the thermal utility and finally recompressed to the ambient pressure. The power plant cogenerative performance depends on the heat and electric demand that usually varies during the year (for residential heating the heat to electric power ratio may range from 0.3 to 9). In this paper, the thermal load variation influence on the BAGT performance will be investigated and compared with those of gas turbine and combined cycle power plants.

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Rajendran, Manivasagam, and S. P. Richard. "Electric power generation from heat energy using thermo electric generator and single ended primary induction converter." Research Journal of Engineering and Technology 11, no. 1 (2020): 01. http://dx.doi.org/10.5958/2321-581x.2020.00001.x.

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Ding, Zhang, and Lin. "A Deep-Sea Pipeline Skin Effect Electric Heat Tracing System." Energies 12, no. 13 (June 26, 2019): 2466. http://dx.doi.org/10.3390/en12132466.

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In order to ensure deep-water flowline safety, this paper combined the axial temperature distribution model of the submarine pipeline and the distributed parameter circuit model of the skin effect electric heat tracing system; such work is conducive to proving that the heating effect of the skin effect electric heat tracing system depends on the distributed circuit parameters and power frequency of the system. Due to the complexity of the power supply device, the frequency cannot be increased indefinitely. Therefore, for the case that the input of the skin electric heat tracing system is constrained, a generalized predictive control algorithm introducing the input softening factor is proposed, and the constrained generalized predictive control strategy is applied to the electric heating temperature control system of the submarine oil pipeline. Simulation results demonstrated that the control quantity of the skin effect electric heat tracing system is effectively controlled within a constraint range, and also the values of heating power and power frequency are obtained by theoretical calculations rather than empirical estimations. Moreover, compared with the conventional control algorithm, the proposed constrained generalized predictive algorithm unfolds more significant dynamic response and better adaptive adjustment ability, which verifies the feasibility of the proposed control strategy.

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JĘDRA, Sylwester, and Adam SMYK. "Trigeneration system based on medium power gas engine." Combustion Engines 125, no. 2 (May 1, 2006): 10–19. http://dx.doi.org/10.19206/ce-117343.

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One of the possibilities of increase of energy and economic efficiency of a small combined heat and power plant is its operation in trigeneration system, in which the conventional system of cogeneration heat and electric power production is widened by a cooling production system. Technical description and characteristics of the set of gas engine plus absorption unit as well as its technological diagram is presented. Performances and limitations of the gas engine are given. Needs for heat, cooling and electric power of a user are described. Total capital and operating costs are estimated and technical and economic conditions for the positive economic efficiency of the trigeneration system are evaluated.

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Langston, Lee. "Campus Heat." Mechanical Engineering 128, no. 12 (December 1, 2006): 28–31. http://dx.doi.org/10.1115/1.2006-dec-2.

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The University of Connecticut is focusing on cogeneration, also called combined heat and power. It is the production of more than one useful form of energy—both heat and electric power—from a single energy source, such as the burning of natural gas or some other fuel. The cogeneration plant has been designed to blend seamlessly into the campus landscape. Cogeneration uses one measure of gas twice—first for generating electricity, then to produce steam. A financial study done by consultants during the plant's planning phase shows definite savings over the long run, especially since the cost of electricity can be expected to vary with the cost of natural gas in New England.

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Ason, S. A., and R. F. Ponkratova. "Reliable protection of power engineers from electric arcs." Okhrana truda i tekhnika bezopasnosti na promyshlennykh predpriyatiyakh (Labor protection and safety procedure at the industrial enterprises), no. 12 (November 20, 2020): 52–60. http://dx.doi.org/10.33920/pro-4-2012-07.

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The article describes modern workwear for power engineers, which protects against the thermal risks of an electric arc and short-term exposure to an open flame. Experts of the Energocontract Group of Companies explain what fabrics are used today to create heatresistant sets, compare their advantages and disadvantages, and describe the protection mechanisms. Also, the material will talk about how the effectiveness of heat-resistant personal protective equipment is checked during tests, and what kind of protective clothing is required for power engineers in the autumn-winter period.

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Tanaka, Takuma, Togo Sugioka, Tatsuya Kobayashi, Ikuo Shohji, Yuya Shimada, Hiromitsu Watanabe, and Yuichiro Kamakoshi. "Low Cycle Fatigue Characteristics of Oxygen-Free Copper for Electric Power Equipment." Materials 14, no. 15 (July 29, 2021): 4237. http://dx.doi.org/10.3390/ma14154237.

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The effect of heat treatment on tensile and low cycle fatigue properties of the oxygen-free copper for electric power equipment was investigated. The heat treatment at 850 °C for 20 min, which corresponds to the vacuum brazing process, caused the grain growth and relaxation of strain by recrystallization, and thus, the residual stress in the oxygen-free copper was reduced. The tensile strength and 0.2% proof stress were decreased, and elongation was increased by the heat treatment accompanying recrystallization. The plastic strain in the heat-treated specimen was increased compared with that in the untreated specimen under the same stress amplitude condition, and thus, the low cycle fatigue life of the oxygen-free copper was degraded by the heat treatment. Striation was observed in the crack initiation area of the fractured surface in the case of the stress amplitude less than 100 MPa regardless of the presence of the heat treatment. With an increase in the stress amplitude, the river pattern and the quasicleavage fracture were mainly observed in the fracture surfaces of the untreated specimens, and they were observed with striations in the fracture surfaces of the heat-treated ones. The result of the electron backscattered diffraction (EBSD) analysis showed that the grain reference orientation deviation (GROD) map was confirmed to be effective to investigate the fatigue damage degree in the grain by low cycle fatigue. In addition, the EBSD analysis revealed that the grains were deformed, and the GROD value reached approximately 28° in the fractured areas of heat-treated specimens after the low cycle fatigue test.

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Mio, Takumi, Yukihiro Komatsubara, Naoki Ohmi, Yusuke Kimoto, Kentaro Iizuka, Tomoki Suganuma, Shun Maruyama, et al. "Auxiliary Power Supply System for Electric Power Steering (EPS) and High-Heat-Resistant Lithium-Ion Capacitor." World Electric Vehicle Journal 10, no. 2 (May 22, 2019): 27. http://dx.doi.org/10.3390/wevj10020027.

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Advanced Driver Assistance System (ADAS) and Automated Driving (AD) are the two major topics for the current and next generations of vehicles. To realize them in full-size vehicles equipped with a 12 V power supply, the need for electric power steering (EPS) is increasing. Currently, the steering system of full-size vehicles is equipped with hydraulic power steering due to electric power shortage. An auxiliary power supply system using a lithium-ion capacitor was developed in order to solve the concern. In addition, to mount the system in the vehicle with no cooling–heating equipment, development of expanding the operating temperature range of the lithium-ion capacitor was conducted. Several improvements have made the capacitor operate stably in high-temperature environments above 100 °C.

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Jheng, Wern Dare, Shao Hsien Chen, and Zhi Yu Lin. "The Efficiency of Thermoelectric Chip by Different Heatsink." Applied Mechanics and Materials 121-126 (October 2011): 2974–78. http://dx.doi.org/10.4028/www.scientific.net/amm.121-126.2974.

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In this study, aluminum nitride, boron nitride, copper, aluminum, with aluminum extruded heat sink as a cooling way of thermoelectric chip. Heat sink temperature change observed and measured the thermoelectric chip output voltage and current. The results showed that with the aluminum extrusion heat sink will increase the efficiency of thermoelectric chip. Copper + aluminum extrusion heat sink, the average electric power increased 173.93%, while the aluminum + aluminum extruded heat sink mean power increased 212.25 %, while the AlN + aluminum extrusion heat sink fins as mean power increased 197.5 %, And the BN + aluminum extrusion heat sink as a heat sink, the average electric power increased 266.17 %.

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Journal articles on the topic 'Congeneration of electric power and heat'

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