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Article: Computer simulation of ground-coupled liquid desiccant air conditioner for sub-tropical regions
Title | Computer simulation of ground-coupled liquid desiccant air conditioner for sub-tropical regions |
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Authors | |
Keywords | Borefield Borehole Ground heat exchanger Ground-source heat pump Liquid desiccant Vapour compression cycle |
Issue Date | 2009 |
Publisher | Elsevier 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? |
Abstract | Computer 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 Identifier | http://hdl.handle.net/10722/59029 |
ISSN | 2023 Impact Factor: 4.9 2023 SCImago Journal Rankings: 1.025 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, CK | en_HK |
dc.contributor.author | Lam, HN | en_HK |
dc.date.accessioned | 2010-05-31T03:41:41Z | - |
dc.date.available | 2010-05-31T03:41:41Z | - |
dc.date.issued | 2009 | en_HK |
dc.identifier.citation | International Journal Of Thermal Sciences, 2009, v. 48 n. 12, p. 2365-2374 | en_HK |
dc.identifier.issn | 1290-0729 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/59029 | - |
dc.description.abstract | Computer 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.language | eng | en_HK |
dc.publisher | Elsevier France, Editions Scientifiques et Medicales. The Journal's web site is located at http://www.elsevier.com/locate/ijts | en_HK |
dc.relation.ispartof | International Journal of Thermal Sciences | en_HK |
dc.rights | International Journal of Thermal Sciences. Copyright © Elsevier France, Editions Scientifiques et Medicales. | en_HK |
dc.subject | Borefield | en_HK |
dc.subject | Borehole | en_HK |
dc.subject | Ground heat exchanger | en_HK |
dc.subject | Ground-source heat pump | en_HK |
dc.subject | Liquid desiccant | en_HK |
dc.subject | Vapour compression cycle | en_HK |
dc.title | Computer simulation of ground-coupled liquid desiccant air conditioner for sub-tropical regions | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://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+Regions | en_HK |
dc.identifier.email | Lam, HN:hremlhn@hkucc.hku.hk | en_HK |
dc.identifier.authority | Lam, HN=rp00132 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.ijthermalsci.2009.05.010 | en_HK |
dc.identifier.scopus | eid_2-s2.0-70349778617 | en_HK |
dc.identifier.hkuros | 157285 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-70349778617&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 48 | en_HK |
dc.identifier.issue | 12 | en_HK |
dc.identifier.spage | 2365 | en_HK |
dc.identifier.epage | 2374 | en_HK |
dc.identifier.isi | WOS:000272726100019 | - |
dc.publisher.place | France | en_HK |
dc.identifier.scopusauthorid | Lee, CK=36882465100 | en_HK |
dc.identifier.scopusauthorid | Lam, HN=7202774923 | en_HK |
dc.identifier.issnl | 1290-0729 | - |