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Experimental measurement and numerical simulation of horizontal-coupled slinky ground source heat exchangers

Wu, Y., Gan, G., Verhoef, A., Vidale, P. L. and Garcia Gonzalez, R. (2010) Experimental measurement and numerical simulation of horizontal-coupled slinky ground source heat exchangers. Applied Thermal Engineering, 30 (16). pp. 2574-2583. ISSN 1359-4311

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To link to this article DOI: 10.1016/j.applthermaleng.2010.07.008

Abstract/Summary

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.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Science > School of Mathematical and Physical Sciences > Department of Meteorology
Interdisciplinary centres and themes > Walker Institute for Climate System Research
Interdisciplinary centres and themes > Soil Research Centre
Faculty of Science > School of Archaeology, Geography and Environmental Science > Department of Geography and Environmental Science
Faculty of Science > School of Mathematical and Physical Sciences > NCAS
ID Code:18100
Uncontrolled Keywords:Ground source heat pump; Horizontal-coupled; Slinky; Specific heat extraction
Additional Information:Selected papers from the 12th conference on process integration, modelling and optimisation for energy saving and pollution reduction
Publisher:Elsevier

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