Heat balance of solar-soil source heat pump compound system |
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Authors: | Jin-hua Chen Xiu-bi Bao Yun-lin Peng and Yu Jia |
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Affiliation: | [1]Key Laboratory of The Three Gorges Reservoir Region's Eco-Environment of Ministry of Education, Chongqing University, Chongqing 400045, China [2]Faculty of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, China |
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Abstract: | Based on the state-of-the-art studies of solar-soil source heat pump compound system, operation patterns of solar-soil compound
system were analyzed, particularly the advantages of parallel operation pattern. It is found that parallel operation pattern
is better for solar-soil compound system. Furthermore, the heat balance issue of solar-soil compound system was emphatically
analyzed from four aspects, which were annual analysis of heating and cooling load, the heat exchange of ground heat exchanger,
capacity determination of solar-assisted heat source and heat balance calculation of solar-soil compound system. Moreover,
annual rate of heat balance in a solar-soil source heat pump compound system was calculated with a case study. It is shown
that the annual heat unbalance ratio is 19%, which is less than 20%. As a result, the practical solar-soil compound system
can basically maintain the heat balance of soil. |
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Keywords: | solar-soil source heat pump compound system heat balance ground-coupled heat pump |
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