Theoretic Study on a Direct-Expanded Ground-Source Heat Pump

Abstract:

A distributed parameter method has been established for a ground-source heat pump in this paper, with this model, the working process of this heat pump system was simulated. The results agree well with experimental data and show that heat-capacity and COP increase when the cooling water flow rate in the tube-in-tube heat exchanger increases; heat-capacity decreases when the temperature of inlet water of the tube-in-tube heat exchanger rises; COP, between 3.8 and 4.5, is higher than that of conventional air-source heat pumps.

• Periodical: Advanced Materials Research (Volumes 236-238)
• Pages: 578-581
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.236-238.578
• Online since: May 2011
• Authors: Xiao Lin Cao, Fang Fang Wang, Si Si Yang, Shuang Jun Cao, Wei Zeng
• Keywords: Ground-Source Heat Pump (GSHP) System, Heat Transfer, Refrigerant

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