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Article: Computer simulation of ground-coupled liquid desiccant air conditioner for sub-tropical regions

TitleComputer simulation of ground-coupled liquid desiccant air conditioner for sub-tropical regions
Authors
KeywordsBorefield
Borehole
Ground heat exchanger
Ground-source heat pump
Liquid desiccant
Vapour compression cycle
Issue Date2009
PublisherElsevier France, Editions Scientifiques et Medicales. The Journal's web site is located at http://www.elsevier.com/locate/ijts
Citation
International Journal Of Thermal Sciences, 2009, v. 48 n. 12, p. 2365-2374 How to Cite?
AbstractComputer model for a novel ground-coupled liquid desiccant air conditioner (GCLDAC) was developed in which a liquid desiccant cycle selectively operated in parallel with a conventional ground-source heat pump cycle by employing just a single compressor. Reverse cycle operation was incorporated to provide heating in winter. Dynamic simulation was carried out for a single-zone sample building at two occupancy levels based on the weather data for Hong Kong and compared with those obtained using a conventional ground-source heat pump system (GSHP). It was found that the borehole length for GCLDAC was reduced by 10.1% on average under different groundwater velocities at a low occupancy level corresponding to a fresh air ratio of 0.066. A larger average reduction of 14.3% could be reached for a higher occupancy level corresponding to a fresh air ratio of 0.122. The energy consumptions for both systems were very close even when the additional parasitic energy consumption for GCLDAC was accounted for. A simple economic analysis indicated that if the borehole installation cost exceeded USD35.0/m, cost saving could be found for the new system at both occupancy levels. Should GCLDAC be manufactured in a low-cost region like China, the economic benefit could be furthered enhanced. © 2009 Elsevier Masson SAS. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/59029
ISSN
2015 Impact Factor: 2.769
2015 SCImago Journal Rankings: 1.665
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLee, CKen_HK
dc.contributor.authorLam, HNen_HK
dc.date.accessioned2010-05-31T03:41:41Z-
dc.date.available2010-05-31T03:41:41Z-
dc.date.issued2009en_HK
dc.identifier.citationInternational Journal Of Thermal Sciences, 2009, v. 48 n. 12, p. 2365-2374en_HK
dc.identifier.issn1290-0729en_HK
dc.identifier.urihttp://hdl.handle.net/10722/59029-
dc.description.abstractComputer model for a novel ground-coupled liquid desiccant air conditioner (GCLDAC) was developed in which a liquid desiccant cycle selectively operated in parallel with a conventional ground-source heat pump cycle by employing just a single compressor. Reverse cycle operation was incorporated to provide heating in winter. Dynamic simulation was carried out for a single-zone sample building at two occupancy levels based on the weather data for Hong Kong and compared with those obtained using a conventional ground-source heat pump system (GSHP). It was found that the borehole length for GCLDAC was reduced by 10.1% on average under different groundwater velocities at a low occupancy level corresponding to a fresh air ratio of 0.066. A larger average reduction of 14.3% could be reached for a higher occupancy level corresponding to a fresh air ratio of 0.122. The energy consumptions for both systems were very close even when the additional parasitic energy consumption for GCLDAC was accounted for. A simple economic analysis indicated that if the borehole installation cost exceeded USD35.0/m, cost saving could be found for the new system at both occupancy levels. Should GCLDAC be manufactured in a low-cost region like China, the economic benefit could be furthered enhanced. © 2009 Elsevier Masson SAS. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier France, Editions Scientifiques et Medicales. The Journal's web site is located at http://www.elsevier.com/locate/ijtsen_HK
dc.relation.ispartofInternational Journal of Thermal Sciencesen_HK
dc.rightsInternational Journal of Thermal Sciences. Copyright © Elsevier France, Editions Scientifiques et Medicales.en_HK
dc.subjectBorefielden_HK
dc.subjectBoreholeen_HK
dc.subjectGround heat exchangeren_HK
dc.subjectGround-source heat pumpen_HK
dc.subjectLiquid desiccanten_HK
dc.subjectVapour compression cycleen_HK
dc.titleComputer simulation of ground-coupled liquid desiccant air conditioner for sub-tropical regionsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1290-0729&volume=&spage=&epage=&date=2009&atitle=Computer+Simulation+of+Ground-coupled+Liquid+Desiccant+Air+Conditioner+for+Sub-tropical+Regionsen_HK
dc.identifier.emailLam, HN:hremlhn@hkucc.hku.hken_HK
dc.identifier.authorityLam, HN=rp00132en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.ijthermalsci.2009.05.010en_HK
dc.identifier.scopuseid_2-s2.0-70349778617en_HK
dc.identifier.hkuros157285en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-70349778617&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume48en_HK
dc.identifier.issue12en_HK
dc.identifier.spage2365en_HK
dc.identifier.epage2374en_HK
dc.identifier.isiWOS:000272726100019-
dc.publisher.placeFranceen_HK
dc.identifier.scopusauthoridLee, CK=36882465100en_HK
dc.identifier.scopusauthoridLam, HN=7202774923en_HK

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