期刊
APPLIED THERMAL ENGINEERING
卷 30, 期 16, 页码 2574-2583出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.applthermaleng.2010.07.008
关键词
Ground source heat pump; Horizontal-coupled; Slinky; Specific heat extraction
资金
- Natural Environment Research Council [NE/F017715/1, NE/F020368/1, ncas10009] Funding Source: researchfish
- NERC [NE/F017715/1, NE/F020368/1] Funding Source: UKRI
Results from both experimental measurements and 3D numerical simulations of Ground Source Heat Pump systems (GSHP) at a UK climate are presented. Experimental measurements of a horizontal-coupled slinky GSHP were undertaken in Talbot Cottage at Drayton St Leonard site, Oxfordshire, UK. The measured thermophysical properties of in situ soil were used in the CFD model. The thermal performance of slinky heat exchangers for the horizontal-coupled GSHP system for different coil diameters and slinky interval distances was investigated using a validated 3D model. Results from a two month period of monitoring the performance of the GSHP system showed that the COP decreased with the running time. The average COP of the horizontal-coupled GSHP was 2.5. The numerical prediction showed that there was no significant difference in the specific heat extraction of the slinky heat exchanger at different coil diameters. However, the larger the diameter of coil, the higher the heat extraction per meter length of soil. The specific heat extraction also increased, but the heat extraction per meter length of soil decreased with the increase of coil central interval distance. (C) 2010 Elsevier Ltd. All rights reserved.
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