[1] Chen Jiufa, Xue Qin, Qiao Weilai, An Erming, et al. Energy saving analysisof a hybrid ground-coupled heat pump project [J]. Journal of Southeast University (English Edition), 2010, 26 (2): 177-181. [doi:10.3969/j.issn.1003-7985.2010.02.007]

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

26

Issue:

2010 2

Page:

177-181

Research Field:

Energy and Power Engineering

Publishing date:

2010-06-30

Info

Title:

Energy saving analysisof a hybrid ground-coupled heat pump project

Author(s):

Chen Jiufa¹;  Xue Qin²;  Qiao Weilai¹;  An Erming¹

¹School of Energy and Environment, Southeast University, Nanjing 210096, China
²Shanghai Tianhua Architecture Co., Ltd., Shanghai 200235, China

Keywords:

hybrid ground-coupled heat pump;  borehole heat exchanger;  energy saving

PACS:

TK529

DOI:

10.3969/j.issn.1003-7985.2010.02.007

Abstract:

A hybrid ground-coupled heat pump(HGCHP)project in Nanjing, China is chosen to analyze the building energy-consumption properties in terms of different control strategies, building envelope and the terminal air-conditioning system.The HGCHP uses a supplemental heat rejecter to dissipate extra thermal energy to guarantee underground soil heat balance.The software EnergyPlus is employed to simulate the project and design the heat flow of the cooling tower and the borehole heat exchanger(BHE).Then two feasible control strategies for the cooling tower and the borehole heat exchanger are proposed.The energy-saving potential of the building envelope is analyzed in terms of the surface color of the wall/roof.With the same terminal system, it is found that in the cooling season the heat flow of the insulated building with black wall/roof is 1.2 times more than that with white wall/roof.With the same insulated building and gray wall/roof, it is concluded that the heat pump units for a primary air fan-coil system show an annual energy consumption increase of 44.7 GJ compared with a radiant floor system.

References:

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[3] Diao Nairen, Fang Zhaohong.Ground-coupled heat pump technology [M].Beijing:Higher Education Press, 2006.(in Chinese)
[4] Yavuzturk C, Spitler J D.Comparative study of operating and control strategies for hybrid ground-source heat pump systems using a short time step simulation model[J].ASHRAE Transactions, 2000, 106(2):192-209.
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[6] Bolattürk A.Optimum insulation thicknesses for building walls with respect to cooling and heating degree-hours in the warmest zone of Turkey[J].Building and Environment, 2008, 43(6):1055-1064.
[7] Takehito I, Toshiaki O, Kazuaki B.Thermal comfort and energy consumption of the radiant ceiling panel system comparison with the conventional all-air system[J].Energy and Building, 1999, 30(2):167-175.

Memo

Memo:

Biography: Chen Jiufa(1959—), male, doctor, professor, chen.jiufa@126.com.
Citation: Chen Jiufa, Xue Qin, Qiao Weilai, et al.Energy saving analysis of a hybrid ground-coupled heat pump project[J].Journal of Southeast University(English Edition), 2010, 26(2):177-181.

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