[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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Energy saving analysisof a hybrid ground-coupled heat pump project(
)
混合土壤热泵节能实例分析
)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
- 混合土壤热泵节能实例分析
- 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
- 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.
- 以南京某混合土壤热泵系统为例, 分析比较不同冷热源运行策略、围护结构及空调末端系统对建筑能耗的影响.该混合土壤热泵系统以冷却塔为辅助散热设备, 使得通过地埋管换热器向土壤散出的热量和从土壤中取出的热量相等.利用能耗模拟软件EnergyPlus对该厂房建筑进行了全能耗分析, 并对冷却塔及地埋管换热器换热量进行计算.然后提出2种运行方法对冷却塔进行启停控制.比较墙面与屋顶不同颜色时建筑能耗特性, 结果表明:供冷季节黑色外围护结构的建筑冷负荷是白色外围护结构的1.2倍;建筑保温性能相同时, 以风机盘管为空调末端, 热泵机组的年能耗比辐射地板系统大44.7 GJ.
References:
[1] Lang Siwei.Public buildings energy-saving design standard for publicizing materials [M].Beijing:China Architecture and Building Press, 2005.(in Chinese)
[2] Chwieduk D.Towards sustainable-energy buildings [J].Applied Energy, 2003, 76(3):211-217.
[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.
[5] Singh J B, Foster G.Advantages of using the hybrid geothermal option [C]//The Second Stockton International Geothermal Conference.Pomona, NJ, USA, 1998.
[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.