Experimental Study of Heating-Cooling Combined Ground Source Heat Pump System with Horizontal Ground Heat Exchanger

Abstract:

A hot-water and air-conditioning (HWAC) combined ground sourse heat pump(GSHP) system with horizontal ground heat exchanger self-designed and actualized was presented in this paper. The heat transfer performance for the heat exchanger of two different pipe arrangements, three layers and four layers, respectively, was compared. It showed that the heat exchange quantity per pipe length for the pipe arrangement of three layers and four layers are 18.0 W/m and 15.0 W/m. The coefficient of performance (COP) of unit and system could remain 4.8 and 4.2 as GSHP system for heating water, and the COP of heating and cooling combination are up to 8.5 and 7.5, respectively. The power consumption of hot-water in a whole year is 9.0 kwh/t. The economy and feasibility analysis on vertical and horizontal ground heat exchanger were made, which showed that the investment cost per heat exchange quantity of horizontal ground heat exchanger is 51.4% lower than that of the vertical ground heat exchanger, but the occupied area of the former is 7 times larger than the latter's.

• Periodical: Advanced Materials Research (Volumes 374-377)
• Pages: 398-404
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.374-377.398
• Online since: October 2011
• Authors: Ying Ning Hu, Ban Jun Peng, Shan Shan Hu, Jun Lin
• Keywords: Air-Conditioning Condensing Heat, Coefficient of Performance (COP), Ground Source Heat Pump (GSHP), Heating-Cooling Combined System, Horizontal Ground Heat Exchanger

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