Journal
APPLIED THERMAL ENGINEERING
Volume 62, Issue 1, Pages 256-266Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.applthermaleng.2013.09.014
Keywords
Ground-source heat pump; Ground heat exchanger; Thermal response test; Borehole thermal resistance; Borehole temperature profiles; Borehole heat transfer
Funding
- International Ground Source Heat Pump Association (IGSHPA), Stillwater, Oklahoma, USA
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A transient heat transfer model has been development for a thermal response test (TRT) on a vertical borehole with a U-tube. Vertical borehole heat exchangers are frequently coupled to ground source heat pumps, which heat and cool buildings. The model provides an analytical solution for the vertical temperature profiles of the circulating fluid through the U-tube, and the temperature distribution in the ground. The model is verified with data sets from a laboratory sandbox and field TRTs, as well as a previously reported numerical solution. Unlike previous analytical models, the vertical profiles for the circulating fluid are generated by the model without any assumption of their functional form. (C) 2013 Elsevier Ltd. All rights reserved.
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