Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/26200
Title: Study on hybrid ground-coupled heat pump systems
Authors: Man, Y
Yang, H 
Fang, Z
Keywords: Ground heat exchanger
Heat pump
Hybrid ground-coupled heat pump systems
Initial and operating cost
Simulation model
Supplemental heat rejecter
Issue Date: 2008
Publisher: Elsevier
Source: Energy and buildings, 2008, v. 40, no. 11, p. 2028-2036 How to cite?
Journal: Energy and buildings 
Abstract: Although ground-coupled heat pump (GCHP) systems are becoming attractive air-conditioning systems in some regions, the significant drawback for their wider application is the high initial cost. Besides, more energy is rejected into ground by the GCHP system installed in cooling-dominated buildings than the energy extracted from ground on an annual basis and this imbalance can result in the degradation of system performance. One of the available options that can resolve these problems is to apply the hybrid ground-coupled heat pump (HGCHP) systems, with supplemental heat rejecters for rejecting extra thermal energy when they are installed in cooling-dominated buildings. This paper presents a practical hourly simulation model of the HGCHP system by modeling the heat transfer of its main components. The computer program developed on this hourly simulation model can be used to calculate the operating data of the HGCHP system according to the building load. The design methods and running control strategies of the HGCHP system for a sample building are investigated. The simulation results show that proper HGCHP system can effectively reduce both the initial cost and the operating cost of an air-conditioning system compared with the traditional GCHP system used in cooling-dominated buildings.
URI: http://hdl.handle.net/10397/26200
ISSN: 0378-7788
EISSN: 1872-6178
DOI: 10.1016/j.enbuild.2008.05.010
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