Title :
The design method of U-bend geothermal heat exchanger of DX-GCHP in cooling model
Author :
Yang, Wei ; Zhang, Guoqiang ; Zhou, Jin ; Wang, Haibiao ; Li, Lin
Author_Institution :
Inst. of Environ. & Municipal Eng., North China Univ. of Water Resources & Electr. Power, Zhengzhou, China
Abstract :
The design method of the U-bend vertical geothermal heat exchanger (GHE) of the direct-expansion ground-source heat pump (DX-GSHP) system in the cooling mode is developed in this paper. The impact of the gravity of the two-phase fluid was taking into consideration, and the pressure-enthalpy diagram of the DX-GSHP system is developed. The determination of the copper pipe diameter and the pipe spacing are presented in this paper. Furthermore, the recommended diameter, spacing and borehole length were given. The method developed in this paper can be used as guidance for the design of GHE for DX-GSHP systems.
Keywords :
design engineering; enthalpy; ground source heat pumps; heat exchangers; pipe flow; pipes; pumps; two-phase flow; DX-GSHP system; GHE; U-bend geothermal heat exchanger; borehole length; cooling model; copper pipe diameter; direct-expansion ground-source heat pump system; pipe spacing; pressure-enthalpy diagram; two-phase fluid gravity; Buildings; Cooling; Heat engines; Heat pumps; Solar heating; Water heating; Water resources; design method; direct-expansion ground-source heat pump (DX-GSHP); geothermal heat exchanger;
Conference_Titel :
Electric Technology and Civil Engineering (ICETCE), 2011 International Conference on
Conference_Location :
Lushan
Print_ISBN :
978-1-4577-0289-1
DOI :
10.1109/ICETCE.2011.5775881
