Simulations of a photovoltaic-thermal ground source heat pump system

Varney, K. E. and Vahdati, M. M. ORCID: https://orcid.org/0009-0009-8604-3004 (2018) Simulations of a photovoltaic-thermal ground source heat pump system. In: Craig, W. and Gavin, K. (eds.) ICE Themes Geothermal Energy, Heath Exchange Systems and Energy Piles. ICE Publishing. ISBN 9780727763983

Abstract/Summary

A ground source heat pump assisted by an array of photovoltaic (PV)-thermal modules was studied in this work. Extracting heat from an array of PV modules should improve the performance of both the PV cells and the heat pump. A series of computer simulations compare the performance of a ground source heat pump with a short ground circuit, used to provide space heating and domestic hot water at a house in southern England. The results indicate that extracting heat from an array of PV-thermal modules would improve the performance of a ground source heat pump with an undersized ground loop. Nevertheless, open air thermal collectors could be more effective, especially during winter. In one model more electricity was saved in ohmic heating than was generated by cooling the PV cells. Cooling the PV modules was found to increase their electrical output up to 4%, but much of the extra electricity was consumed by the cooling pumps.