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Ground source heat pump COP in a residential building through the use of solar thermal collectors.

Girard, Aymeric; Gago, Eulalia Jadraque; Muneer, Tariq; Caceres, Gustavo


Aymeric Girard

Eulalia Jadraque Gago

Gustavo Caceres


This article investigates the feasibility of achieving higher performance from ground-source heat-pumps (GSHP) in space heating mode through the use of solar thermal collectors. A novel simulation tool for solar-assisted ground-source heat-pumps (SGSHP) is presented with an analysis of the influence of solar collectors on the improvement of heat pump performance. Solar radiation and climate temperature data of 19 European cities were used to perform simulations of SGSHP and GSHP systems considering a typical residential house. Overall performance coefficients (COPsys) varied from northern to southern locations between 4.4 and 5.8 for SGSHP and between 4.3 and 5.1 for GSHP. Results show that solar collectors coupling has more impact on performance improvement in regions that benefit from higher irradiance. However, greater running cost savings are achieved in milder climate conditions. Both heat-pump systems are able to effectively contribute to carbon footprint reductions for residential buildings, especially in countries where fossil fuels are the primary source of electricity generation. SGSHP payback periods are found between 8.5 and 23 years from northern to southern localities, making such heating system an economic heating option. SGSHPs are best suited for high irradiance and cool climate locations such as the mountainous regions in southern Europe.


Girard, A., Gago, E. J., Muneer, T., & Caceres, G. (2015). Ground source heat pump COP in a residential building through the use of solar thermal collectors. Renewable Energy, 80, 26-39.

Journal Article Type Article
Acceptance Date Jan 27, 2015
Publication Date 2015
Deposit Date Jan 21, 2016
Print ISSN 0960-1481
Electronic ISSN 1879-0682
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 80
Pages 26-39
Keywords Ground-source heat pump; Solar-assisted ground-source heat pump; Building space heating; Energy efficiency;
Model simulation;
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