Abstract
In order to evaluate the heating performance of gas engine heat pump (GEHP) for air-conditioning and hot water supply, a test facility was developed and experiments were performed over a wide range of engine speed (1400-2600 r/min), ambient air temperature (2.4-17.8 °C) and condenser water inlet temperature (30-50 °C). The results show that as engine speed increases from 1400 r/min to 2600 r/min, the total heating capacity and energy consumption increase by about 30% and 89%, respectively; while the heat pump coefficient of performance (COP) and system primary energy ratio (PER) decrease by 44% and 31%, respectively. With the increase of ambient air temperature from 2.4 °C to 17.8 °C, the heat pump COP and system PER increase by 32% and 19%, respectively. Moreover, the heat pump COP and system PER decrease by 27% and 15%, respectively, when the condenser water inlet temperature changes from 30 °C to 50 °C. So, it is obvious that the effect of engine speed on the performance is more significant than the effects of ambient air temperature and condenser water inlet temperature.
Similar content being viewed by others
References
ZHANG R R, LU X S, LI S Z, LIN W S, GU A Z. Analysis on the heating performance of a gas engine driven air to water heat pump based on a steady-state model [J]. Energy Conversion and Management, 2005, 46: 1714–1730.
COLOSIMO D D. Introduction to engine-driven heat pumps— Concepts, approach, and economics [J]. ASHRAE Trans, 1987, 93(2): 987–996.
YANG Zhao, ZHAO Hai-bo, FANG Zheng. Modeling and dynamic control simulation of unitary gas engine heat pump [J]. Energy Conversion and Management, 2007, 48(12): 3146–3153.
XU Zhen-jun, YANG Zhao. Saving energy in the heat-pump air conditioning system driven by gas engine [J]. Energy and Buildings, 2009, 41(2): 206–211.
SANAYE S, CHAHARTAGHI M. Thermal modeling and operating tests for the gas engine-driven heat pump systems [J]. Energy, 2010, 35(1): 351–363.
ELGENDY E, SCHMIDT J, KHALIL A, FATOUH M. Performance of a gas engine driven heat pump for hot water supply systems [J]. General Information, 2011, 36(5): 2883–2889.
YANG Zhao, WANG Wen-bin, WU Xi. Thermal modeling and operating tests for a gas-engine driven heat pump working as a water heater in winter [J]. Energy and Buildings, 2013, 58(2): 219–226.
WANG Yan-wei, CAI Liang, YU Yue, ZHANG Xiao-song. Performance study of parallel-type hybrid-power gas engine-driven heat pump system [J]. Energy and Buildings, 2013, 62(5): 37–44.
ELGENDY E, SCHMIDT J. Optimum utilization of recovered heat of a gas engine heat pump used for water heating at low air temperature [J]. Energy and Buildings, 2014: 375–383.
ELGENDY E, SCHMIDT J. Experimental study of gas engine driven air to water heat pump in cooling mode [J]. General Information, 2010, 35(6): 2461–2467.
ELGENDY E, SCHMIDT J, KHALIL A, KHALIL A, FATOUH M. Performance of a gas engine heat pump (GEHP) using R410A for heating and cooling applications [J]. Energy, 2010, 35(12): 4941–4948.
KONG X Q, WANG R Z, WU J Y, HUANG X H, Y H F, WU D W, XU Y X. Experimental investigation of a micro-combined cooling, heating and power system driven by a gas engine [J]. International Journal of Refrigeration, 2005, 28(7): 977–987.
SANAYE S, CHAHARTAGHI M, ASGARI H. Dynamic modeling of gas engine driven heat pump system in cooling mode [J]. Energy, 2013, 55(1): 195–208.
FANG Zheng, YANG Zhao, LIU Yun-tao, CHEN Yi-guang. Noise control of GEHP’s noise isolation device [J]. Journal of Vibration and Shock, 2009, 28(5): 192–198.
WANG Xiao-tao, MA Chong-fang, LU Yuan-wei. An experimental study of a direct expansion ground-coupled heat pump system in heating mode [J]. International Journal of Energy Research, 2009, 33(15): 1367–1383.
BRENN J, SOLTIC P, BACH C. Comparison of natural gas driven heat pumps and electrically driven heat pumps with conventional systems for building heating purposes [J]. Energy and Buildings, 2010, 42(6): 904–908.
Author information
Authors and Affiliations
Corresponding author
Additional information
Foundation item: Project(hx2013-87) supported by the Qingdao Economic and Technology Development Zone Haier Water-Heater Co. Ltd., China
Rights and permissions
About this article
Cite this article
Dong, Fj., Liu, Fg., Li, Xt. et al. Exploring heating performance of gas engine heat pump with heat recovery. J. Cent. South Univ. 23, 1931–1936 (2016). https://doi.org/10.1007/s11771-016-3249-z
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11771-016-3249-z