Ground-coupled heat pump (GCHP) systems are becoming more and more popular for air conditioning both in residential and commercial buildings. In order to find how much energy can really be saved by GCHP system for temperate region, an on-site measurement was carried out on a GCHP system installed on campus of Hebei University of Engineering in China. The temperature distributions of borehole and ground soil around borehole at different depths were measured for finding the ground temperature field. The operation performance of GCHP system including circulating water temperature, heat extraction from and rejection into building, power consumption of system and refrigerator pressure when the GCHP system operated in intermittent and continuous modes were recorded. It is indicated that the GCHP system’s COP is better for intermittent mode but lower for continuous mode. The GHE is found to be undersized for the existing GCHP system, a hybrid GCHP system by adding supplemental heat rejecter should be used to achieve better performance.
Lund JW, Direct-use of geothermal energy in the USA, Applied Energy 2003, 74:33–42.
Yang, W., et al., Current status of ground-source heat pumps in China, Energy Policy (2009), doi:10.1016/ j.enpol.2009.09.021.
J.-Y. Lee, Current status of ground source heat pumps in Korea, Renewable and Sustainable Energy Reviews 13 (2009) 1560–1568.
IEA Heat Pump Centre Closed Loop Ground-Coupled Heat Pumps, IEA Heat Pump Centre.
Lund JW., Present utilization and future prospects of geothermal energy worldwide. In: Proc. of the renewable energy 2006 conf., Makuhari Messe, Chiba, Japan; 2006. p. 47–52.
H. Yang, et al., Vertical-borehole ground-coupled heat pumps: A review of models and systems, Applied Energy 87 (2010) 16–27.
Yujin Hwang, et al., Cooling performance of a vertical ground-coupled heat pump system installed in a school building, Renewable Energy 34 (2009) 578–582.
Erhan Pulat, et al., Experimental study of horizontal ground source heat pump performance for mild climate in Turkey, Energy 34 (2009) 1284–1295.
A. Michopoulos, et al., Three-years operation experience of a ground source heat pump system in Northern Greece, Energy and Buildings 39 (2007) 328–334.
Weibo Yang, et al., A two-region simulation model of vertical U-tube ground heat exchanger and its experimental verification, Applied Energy 86 (2009) 2005–2012.
Xinguo Li, Zhihao Chen, Jun Zhao, Simulation and experiment on the thermal performance of U-vertical ground coupled heat exchanger, Applied Thermal Engineering 26 (2006) 1564–1571.
Mostafa H. Sharqawy, et al., First in situ determination of the ground thermal conductivity for borehole heat exchanger applications in Saudi Arabia, Renewable Energy 34 (2009) 2218–2223.
Huajun Wang, et al., Improved method and case study of thermal response test for borehole heat exchangers of ground source heat pump system, Renewable Energy xxx (2009) 1–7.
Hikmet Esen, Mustafa Inalli, In-situ thermal response test for ground source heat pump system in Elazığ, Turkey, Energy and Buildings 41 (2009) 395–401.
How to cite this article
Man, Y., Yang, H. and Wang, J. (2010). 'Operation performance investigation of ground coupled heat pump system for temperate region'. SET Proceedings, 9, pp. 1-8. https://doi.org/10.65582/set.2010.084
