Design and energy performance of hybrid ground coupled heat pump systems in cooling-load dominated office buildings

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

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 languageEnglish
Title of host publicationProceedings of the 1st International Postgraduate Conference on Infrastructure and Environment, IPCIE 2009
Pages9-16
Number of pages8
Publication statusPublished - 1 Dec 2009
Event1st International Postgraduate Conference on Infrastructure and Environment, IPCIE 2009 - Hong Kong, Hong Kong
Duration: 5 Jun 20096 Jun 2009

Conference

Conference1st International Postgraduate Conference on Infrastructure and Environment, IPCIE 2009
CountryHong Kong
CityHong Kong
Period5/06/096/06/09

Keywords

  • Cooling dominated building
  • Design method
  • Energy efficiency
  • Hybrid ground coupled heat pump systems
  • Simulation model

ASJC Scopus subject areas

  • Building and Construction
  • Environmental Science(all)

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