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Article: Determination of groundwater flow direction in thermal response test analysis for geothermal heat pump systems
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TitleDetermination of groundwater flow direction in thermal response test analysis for geothermal heat pump systems
 
AuthorsLee, CK1
Lam, HN1
 
Issue Date2011
 
CitationHvac And R Research, 2011, v. 17 n. 6, p. 991-999 [How to Cite?]
DOI: http://dx.doi.org/10.1080/10789669.2011.599763
 
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.
 
ISSN1078-9669
2013 Impact Factor: 0.745
2013 SCImago Journal Rankings: 0.621
 
DOIhttp://dx.doi.org/10.1080/10789669.2011.599763
 
ISI Accession Number IDWOS:000299958700008
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.

 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorLee, CK
 
dc.contributor.authorLam, HN
 
dc.date.accessioned2012-08-08T08:45:48Z
 
dc.date.available2012-08-08T08:45:48Z
 
dc.date.issued2011
 
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.
 
dc.description.natureLink_to_subscribed_fulltext
 
dc.identifier.citationHvac And R Research, 2011, v. 17 n. 6, p. 991-999 [How to Cite?]
DOI: http://dx.doi.org/10.1080/10789669.2011.599763
 
dc.identifier.doihttp://dx.doi.org/10.1080/10789669.2011.599763
 
dc.identifier.epage999
 
dc.identifier.hkuros195927
 
dc.identifier.isiWOS:000299958700008
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.

 
dc.identifier.issn1078-9669
2013 Impact Factor: 0.745
2013 SCImago Journal Rankings: 0.621
 
dc.identifier.issue6
 
dc.identifier.scopuseid_2-s2.0-84861604673
 
dc.identifier.spage991
 
dc.identifier.urihttp://hdl.handle.net/10722/157202
 
dc.identifier.volume17
 
dc.languageeng
 
dc.publisher.placeUnited States
 
dc.relation.ispartofHVAC and R Research
 
dc.relation.referencesReferences in Scopus
 
dc.titleDetermination of groundwater flow direction in thermal response test analysis for geothermal heat pump systems
 
dc.typeArticle
 
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Author Affiliations
  1. The University of Hong Kong