Critical Review on Efficiency of Ground Heat Exchangers in Heat Pump Systems

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dc.contributor.author Eswiasi, Adel
dc.contributor.author Mukhopadhyaya, Phalguni
dc.date.accessioned 2020-07-22T19:28:32Z
dc.date.available 2020-07-22T19:28:32Z
dc.date.copyright 2020 en_US
dc.date.issued 2020
dc.identifier.citation Eswiasi, A. & Mukhopadhyaya, P. (2020). Critical review of ground heat exchangers in heat pump systems. Clean Technologies, 2(2). https://doi.org/10.3390/cleantechnol2020014 en_US
dc.identifier.uri https://doi.org/10.3390/cleantechnol2020014
dc.identifier.uri http://hdl.handle.net/1828/11946
dc.description.abstract Use of ground source heat pumps has increased significantly in recent years for space heating and cooling of residential houses and commercial buildings, in both heating (i.e., cold region) and cooling (i.e., warm region) dominated climates, due to its low carbon footprint. Ground source heat pumps exploit the passive energy storage capacity of the ground for heating and cooling of buildings. The main focus of this paper is to critically review how different construction and operation parameters (e.g., pipe configuration, pipe diameter, grout, heat injection rate, and volumetric flow rate) have an impact on the thermal efficiency of the vertical ground heat exchanger (VGHE) in a ground source heat pump (GSHP) system. The published literatures indicate that thermal performance of VGHEs increases with an increase of borehole diameter and/or pipe diameter. These literatures show that the borehole thermal resistance of VGHEs decreases within a range of 9% to 52% due to pipe configurations and grout materials. Furthermore, this paper also identifies the scope to increase the thermal efficiency of VGHE. The authors conclude that in order to enhance the heat transfer rate in VGHE, any attempt to increase the surface area of the pipe configuration would likely be an effective solution. en_US
dc.description.sponsorship The graduate student (A.E.) was funded by the Libyan-North American Scholarship Program (LNASP), which is a joint collaboration between the Libyan Ministry of Higher Education and Scientific Research, the Canadian Bureau for International Education. en_US
dc.language.iso en en_US
dc.publisher Clean Technologies en_US
dc.subject vertical ground heat exchangers en_US
dc.subject thermal response test en_US
dc.subject borehole thermal resistance en_US
dc.title Critical Review on Efficiency of Ground Heat Exchangers in Heat Pump Systems en_US
dc.type Article en_US
dc.description.scholarlevel Faculty en_US
dc.description.reviewstatus Reviewed en_US

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