Thermal response testing of a multiple borehole ground heat exchanger

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Thermal response testing of a multiple borehole ground heat exchanger. / Javed, Saqib; Per, Fahlén.

I: International Journal of Low-Carbon Technologies, Vol. 6, Nr. 2, 2011, s. 141-148.

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TY - JOUR

T1 - Thermal response testing of a multiple borehole ground heat exchanger

AU - Javed, Saqib

AU - Per, Fahlén

PY - 2011

Y1 - 2011

N2 - This paper presents the methodology, results and a discussion of thermal response tests (TRTs) performed on a multiple borehole ground heat exchanger. The ground heat exchanger consisted of nine 80-m deep boreholes. TRTs with durations between 48 and 260 h were performed on individual boreholes. Tests were analysed using common evaluation methods, and ground conductivity and borehole resistance values were determined for all nine boreholes. In addition to these parameters, the undisturbed ground temperatures were also determined for individual boreholes using multiple approaches. A sensitivity analysis was performed to analyse the effects of various test and parameter uncertainties on the ground thermal conductivity and borehole thermal resistance estimations.

AB - This paper presents the methodology, results and a discussion of thermal response tests (TRTs) performed on a multiple borehole ground heat exchanger. The ground heat exchanger consisted of nine 80-m deep boreholes. TRTs with durations between 48 and 260 h were performed on individual boreholes. Tests were analysed using common evaluation methods, and ground conductivity and borehole resistance values were determined for all nine boreholes. In addition to these parameters, the undisturbed ground temperatures were also determined for individual boreholes using multiple approaches. A sensitivity analysis was performed to analyse the effects of various test and parameter uncertainties on the ground thermal conductivity and borehole thermal resistance estimations.

KW - Ground source heat pumps (GSHP)

KW - Ground thermal conductivity

KW - Borehole

KW - Thermal response test (TRT)

U2 - 10.1093/ijlct/ctr004

DO - 10.1093/ijlct/ctr004

M3 - Article

VL - 6

SP - 141

EP - 148

JO - International Journal of Low-Carbon Technologies

JF - International Journal of Low-Carbon Technologies

IS - 2

ER -