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Article: Determination of groundwater flow direction in thermal response test analysis for geothermal heat pump systems

TitleDetermination of groundwater flow direction in thermal response test analysis for geothermal heat pump systems
Authors
Issue Date2011
Citation
Hvac And R Research, 2011, v. 17 n. 6, p. 991-999 How to Cite?
AbstractA methodology was proposed to determine the groundwater flow direction from a thermal response test analysis using three boreholes. The methodology was verified using sample test data generated from a three-dimensional numerical model for the borehole ground heat exchangers. It was found that the groundwater flow velocity and the borehole separation had significant effects on the correctness of the estimated groundwater flow direction. A smaller borehole separation and a higher groundwater flow helped improve the traveling speed of the heat front and, consequently, the thermal interference effect from adjacent boreholes. This was crucial for the correct prediction of the groundwater flow direction in the analysis. The adoption of a longer test period also strengthened the borehole thermal interference and, hence, the accuracy of the estimated groundwater flow direction. Besides, the minimum groundwater flow velocity capable of being determined with confidence from the analysis could also be decreased. Finally, the use of an unequally spaced borefield could further enhance the effectiveness of the methodology. Copyright © 2011 American Society of Heating, Refrigerating and Air-Conditioning Engineers.
Persistent Identifierhttp://hdl.handle.net/10722/157202
ISSN
2014 Impact Factor: 0.673
2013 SCImago Journal Rankings: 0.621
ISI Accession Number ID
Funding AgencyGrant Number
Research Grants Council of Hong Kong713710
Funding Information:

The authors gratefully acknowledge the funding support to this research work provided by the Research Grants Council of Hong Kong under Project Number 713710.

References

 

DC FieldValueLanguage
dc.contributor.authorLee, CKen_US
dc.contributor.authorLam, HNen_US
dc.date.accessioned2012-08-08T08:45:48Z-
dc.date.available2012-08-08T08:45:48Z-
dc.date.issued2011en_US
dc.identifier.citationHvac And R Research, 2011, v. 17 n. 6, p. 991-999en_US
dc.identifier.issn1078-9669en_US
dc.identifier.urihttp://hdl.handle.net/10722/157202-
dc.description.abstractA methodology was proposed to determine the groundwater flow direction from a thermal response test analysis using three boreholes. The methodology was verified using sample test data generated from a three-dimensional numerical model for the borehole ground heat exchangers. It was found that the groundwater flow velocity and the borehole separation had significant effects on the correctness of the estimated groundwater flow direction. A smaller borehole separation and a higher groundwater flow helped improve the traveling speed of the heat front and, consequently, the thermal interference effect from adjacent boreholes. This was crucial for the correct prediction of the groundwater flow direction in the analysis. The adoption of a longer test period also strengthened the borehole thermal interference and, hence, the accuracy of the estimated groundwater flow direction. Besides, the minimum groundwater flow velocity capable of being determined with confidence from the analysis could also be decreased. Finally, the use of an unequally spaced borefield could further enhance the effectiveness of the methodology. Copyright © 2011 American Society of Heating, Refrigerating and Air-Conditioning Engineers.en_US
dc.languageengen_US
dc.relation.ispartofHVAC and R Researchen_US
dc.titleDetermination of groundwater flow direction in thermal response test analysis for geothermal heat pump systemsen_US
dc.typeArticleen_US
dc.identifier.emailLam, HN:hremlhn@hkucc.hku.hken_US
dc.identifier.authorityLam, HN=rp00132en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1080/10789669.2011.599763en_US
dc.identifier.scopuseid_2-s2.0-84861604673en_US
dc.identifier.hkuros195927-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84861604673&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume17en_US
dc.identifier.issue6en_US
dc.identifier.spage991en_US
dc.identifier.epage999en_US
dc.identifier.isiWOS:000299958700008-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridLee, CK=8757364600en_US
dc.identifier.scopusauthoridLam, HN=7202774923en_US

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