Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Experimental study on the performance of a gas engine heat pump for heating and domestic hot water
HighlightsA GEHP working with R134a for heating and domestic hot water was developed.The performance characteristics of the gas engine and the system were analyzed in heating mode.Effective energy conservation could be expected if the gas engine operate at low speed and high load.The quality and quantity of domestic hot water were satisfactory.
AbstractThe present work is aimed at exploring the performance characteristics of a gas engine heat pump (GEHP) system in the aspect of the heating and domestic hot water. A test prototype was established using R134a as working fluid. The performance characteristics of the gas engine and the GEHP system working were studied by experiments in heating mode. The results showed that the output efficiency of the gas engine increased when the gas engine speed is constant. The coefficient of performance (COP) and primary energy ratio (PER) of the GEHP system decreased with the growing of the gas engine speed, but increased with increasing condenser water inlet temperature and ambient air temperature. And the PER of the GEHP system was between 1.23 and 1.48 under experimental condition. In addition, the energy of heat recovery accounted for about 30%–45% of the total heating capacity of the GEHP system, and the temperature of the domestic hot water which was heated by the waste heat could reach 40°C–60°C, thus ordinary families' demands for domestic hot water could be satisfied.
Experimental study on the performance of a gas engine heat pump for heating and domestic hot water
HighlightsA GEHP working with R134a for heating and domestic hot water was developed.The performance characteristics of the gas engine and the system were analyzed in heating mode.Effective energy conservation could be expected if the gas engine operate at low speed and high load.The quality and quantity of domestic hot water were satisfactory.
AbstractThe present work is aimed at exploring the performance characteristics of a gas engine heat pump (GEHP) system in the aspect of the heating and domestic hot water. A test prototype was established using R134a as working fluid. The performance characteristics of the gas engine and the GEHP system working were studied by experiments in heating mode. The results showed that the output efficiency of the gas engine increased when the gas engine speed is constant. The coefficient of performance (COP) and primary energy ratio (PER) of the GEHP system decreased with the growing of the gas engine speed, but increased with increasing condenser water inlet temperature and ambient air temperature. And the PER of the GEHP system was between 1.23 and 1.48 under experimental condition. In addition, the energy of heat recovery accounted for about 30%–45% of the total heating capacity of the GEHP system, and the temperature of the domestic hot water which was heated by the waste heat could reach 40°C–60°C, thus ordinary families' demands for domestic hot water could be satisfied.
Experimental study on the performance of a gas engine heat pump for heating and domestic hot water
Liu, Feng-Guo (Autor:in) / Tian, Zhong-Yun (Autor:in) / Dong, Fu-Jiang (Autor:in) / Yan, Chao (Autor:in) / Zhang, Rui (Autor:in) / Yan, Ai-Bin (Autor:in)
Energy and Buildings ; 152 ; 273-278
17.07.2017
6 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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