Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
In-situ experimental study of heat exchange capacity of CFG pile geothermal exchangers
Highlights Full-scale TRT and TPT of CFG pile exchangers are performed. Heat exchange capacity of CFG energy piles is estimated from different power TRT. Effects of inlet water temperature and flow velocity on TPT are studied. Heat exchange of CFG energy piles varies with different operation modes. Temperature influence radius of a single CFG pile exchanger is over 4m.
Abstract Pile geothermal exchangers are a popular new type of geothermal exchanger for use in ground source heat pump systems due to their technical and cost improvements over traditional borehole geothermal exchangers. An in-situ full-scale study using the thermal response and thermal performance tests (TRT and TPT) is performed to investigate the heat exchange capacity of the cement-fly ash-gravel (CFG) piles usually used in foundations for low to medium high-rise buildings in Beijing. This paper analyzes the influences of the hydration heat of cement, heating power, inlet water temperature, circulating water flow velocity, operation mode, and group-pile effects on the heat exchange capacity of CFG pile geothermal exchangers. The test results can be used for the thermal design of CFG energy piles.
In-situ experimental study of heat exchange capacity of CFG pile geothermal exchangers
Highlights Full-scale TRT and TPT of CFG pile exchangers are performed. Heat exchange capacity of CFG energy piles is estimated from different power TRT. Effects of inlet water temperature and flow velocity on TPT are studied. Heat exchange of CFG energy piles varies with different operation modes. Temperature influence radius of a single CFG pile exchanger is over 4m.
Abstract Pile geothermal exchangers are a popular new type of geothermal exchanger for use in ground source heat pump systems due to their technical and cost improvements over traditional borehole geothermal exchangers. An in-situ full-scale study using the thermal response and thermal performance tests (TRT and TPT) is performed to investigate the heat exchange capacity of the cement-fly ash-gravel (CFG) piles usually used in foundations for low to medium high-rise buildings in Beijing. This paper analyzes the influences of the hydration heat of cement, heating power, inlet water temperature, circulating water flow velocity, operation mode, and group-pile effects on the heat exchange capacity of CFG pile geothermal exchangers. The test results can be used for the thermal design of CFG energy piles.
In-situ experimental study of heat exchange capacity of CFG pile geothermal exchangers
You, Shuang (Autor:in) / Cheng, Xiaohui (Autor:in) / Guo, Hongxian (Autor:in) / Yao, Zhiquan (Autor:in)
Energy and Buildings ; 79 ; 23-31
13.04.2014
9 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
In-situ experimental study of heat exchange capacity of CFG pile geothermal exchangers
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