Abstract
Recently, the ground coupled heat pump system (GCHP) becomes popular in many areas, but the GCHP system experiences performance degradation after long-term operation due to heat accumulation in the ground in cooling-load dominated buildings. One of the efficient methods to resolve this problem is to employ the hybrid ground coupled heat pump system (HGCHP), which integrates the GCHP system with supplemental heat rejecters to reject the accumulated heat. However, design of an economical HGCHP system with high energy efficiency is a complex problem. In this study, a practical hourly simulation model of the HGCHP system is developed by modeling the heat transfer process of its main components. Different schemes of the HGCHP system for a small office building located in Guangzhou are proposed. By simulating and comparing the hourly operating performance of the HGCHP system for different design methods, the optimum design parameters can be determined. It shows that the optimum HGCHP system for the sample building can effectively solve the heat accumulation problem and substantially reduce the total cost of air-conditioning system during long-term running.
Original language | English |
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Title of host publication | Proceedings of the 1st International Postgraduate Conference on Infrastructure and Environment, IPCIE 2009 |
Pages | 9-16 |
Number of pages | 8 |
Publication status | Published - 1 Dec 2009 |
Event | 1st International Postgraduate Conference on Infrastructure and Environment, IPCIE 2009 - Hong Kong, Hong Kong Duration: 5 Jun 2009 → 6 Jun 2009 |
Conference
Conference | 1st International Postgraduate Conference on Infrastructure and Environment, IPCIE 2009 |
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Country/Territory | Hong Kong |
City | Hong Kong |
Period | 5/06/09 → 6/06/09 |
Keywords
- Cooling dominated building
- Design method
- Energy efficiency
- Hybrid ground coupled heat pump systems
- Simulation model
ASJC Scopus subject areas
- Building and Construction
- General Environmental Science