Yijun Gao
Tsinghua University, Beijing, China
Wei Wu
Tsinghua University, Beijing, China
Zongwei Han
Tsinghua University, Beijing, China
Xianting Li
Tsinghua University, Beijing, China
Download articlehttp://dx.doi.org/10.3384/ecp110571321Published in: World Renewable Energy Congress - Sweden; 8-13 May; 2011; Linköping; Sweden
Linköping Electronic Conference Proceedings 57:12, p. 1321-1328
Published: 2011-11-03
ISBN: 978-91-7393-070-3
ISSN: 1650-3686 (print), 1650-3740 (online)
After introducing the application status and problems of geothermal air conditioning system in China; a new kind of ground source air-conditioning system (EBCS) is put forward. The system consists of distributed air-conditioners combining heat pipe and vapor compression; fresh air handling unit with large enthalpy difference and ground source water loop. Geothermal energy is transported to the combined air-conditioners for heating and cooling by water loop. The combined air-conditioner can be operated at heat pump condition or heat pipe condition for air conditioning. In winter and transition season; the cooling energy in ground can be directly used for the cooling in inner zone by heat pipe mode; while the recovered heat is used for heating in peripheral zone.
To analyze the performance of proposed system; a commercial building in north China has been taken as the research object; and the annual energy use is simulated. It is shown that the new system can save 21.7% energy compared to the traditional ground source heat pump system; and may be a potential air conditioning system for commercial buildings in north China.
Building energy efficiency; Ground source; Heat pipe; Water loop; fresh air handing unit; air conditioning.
[1] W. Yang; J. Zhou; W. Xu; and G; Zhang. Current status of ground source heat pump in China. Energ. Policy; vol. 38; 2010: 323-332.
doi:
10.1016/j.enpol.2009.09.021.
[2] Tao Meng. Yanqing Di; Li Liu; et al. Research of ground heat balance of ground source heat pump. 2009 International Conference on Energy and Environment Technology; 2009: 777-781.
doi: 10.1109/ICEET.2009.194.
[3] Xianting Li; Yijun Gao; Zongwei Han; et al. A new central air conditioning system combining heat pipe and vapor compression based on energy-bus. HEATING VENTILATING & AIR CONDITIONING; Vol.41; No.2; 2011: 1-6.
[4] Chen Feng; Deng Yuchun; Xue Zhifeng and Wu Ruhong. Toolpack for building environment simulation. HEATING VENTILATING & AIR CONDITIONING; Vol.29; No.4; 1999: 58-63.
[5] Zongwei Han; Maoyu Zheng; Fanhong Kong. Simulation research on solar-assisted ground source heat pump heating system with seasonal soil thermal storage in severe cold area. ACTA ENERGIAE SOLARIS SINICA. Vol.29; No.5; 2008: 574-580.
[6] Liu Tianwei; Du Kai. Research on the energy saving of water loop heat pump system applied to office buildings. HEATING VENTILATING & AIR CONDITIONING; Vol.40; No.3; 2010: 63-67.
[7] Huang Bing;Yang Chang-zhi. Resarch on simulation and economic assessment of ground source heat pump system. FLUID MACHINERY; Vol.38; No.1; 2010: 75-80.