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Air quality in rooms conditioned by chilled ceiling and mixed displacement ventilation for energy saving

Show simple item record Chakroun W. Ghalib K. Ghaddarb N.
dc.contributor.editor 2011 2017-10-04T11:15:49Z 2017-10-04T11:15:49Z 2011
dc.identifier 10.1016/j.enbuild.2011.06.019
dc.identifier.issn 03787788
dc.description.abstract A transient-contaminant-transport model is developed for assessing IAQ in the breathing zone when introducing return air into rooms conditioned by CC-DV system to save energy. The steady state transport model of [1] is extended to transient conditions while accounting for significant wall plumes associated with external loads. Experiments are performed to validate the extended model predictions of IAQ expressed in the level of CO2 concentration. Experiments are conducted in a chamber with two external walls in Kuwait Climate. Measurements are recorded in time of the air temperature and CO 2 concentration at selected locations in the room and compared with values predicted by the model. Experimental results agreed well with model predictions. The maximum errors in predicted CO2 concentrations are less thanandplusmn;25ppm in presence of external load. 60percent fresh air fraction resulted in 37percent less energy consumption compared with 100percent fresh air CC-DV system. The validated model is applied to a case study in Kuwait to evaluate energy saving over the cooling season for a typical office space while using mixed DV air. Energy savings of up to 20.6percent can be realized using mixed supply air while maintaining IAQ compared with energy used for the 100percent fresh air. © 2011 Elsevier B.V. All rights reserved.
dc.format.extent Pages: (2684-2695)
dc.language English
dc.publisher LAUSANNE
dc.relation.ispartof Publication Name: Energy and Buildings; Publication Year: 2011; Volume: 43; no. 10; Pages: (2684-2695);
dc.source Scopus
dc.title Air quality in rooms conditioned by chilled ceiling and mixed displacement ventilation for energy saving
dc.type Article
dc.contributor.affiliation Chakroun, W., Department of Mechanical Engineering, Kuwait University, P.O. Box 5969, Safat 13060, Kuwait
dc.contributor.affiliation Ghalib, K., Department of Mechanical Engineering, American University of Beirut, P.O. Box 11-0236, Beirut 1107-2020, Lebanon
dc.contributor.affiliation Ghaddarb, N., Department of Mechanical Engineering, American University of Beirut, P.O. Box 11-0236, Beirut 1107-2020, Lebanon
dc.contributor.authorAddress Chakroun, W.; Department of Mechanical Engineering, Kuwait University, P.O. Box 5969, Safat 13060, Kuwait; email:
dc.contributor.authorCorporate University: American University of Beirut; Faculty: Faculty of Engineering and Architecture; Department: Mechanical Engineering;
dc.contributor.authorDepartment Mechanical Engineering
dc.contributor.faculty Faculty of Engineering and Architecture
dc.contributor.authorInitials Chakroun, W
dc.contributor.authorInitials Ghali, K
dc.contributor.authorInitials Ghaddar, N
dc.contributor.authorReprintAddress Chakroun, W (reprint author), Kuwait Univ, Dept Mech Engn, POB 5969, Safat 13060, Kuwait.
dc.contributor.authorUniversity American University of Beirut
dc.description.cited American Society of Heating Refrigerating and Air Conditioning Engineers, 2005, ASHRAE HDB FUND; ASHRAE, 2007, 621 ASHRAE ANSI; Ayoub M, 2006, HVACandR RES, V12, P1005, DOI 10.1080-10789669.2006.10391448; Bahman A., 2008, ASHRAE T, V115, P587; Braun J.E., 1989, ASHRAE T, V95, P164; *CARR, 2006, CARR HOURL AN PROGR; Gebhart B., 1988, BUOYANCY INDUCED FLO; GHADDAR N, 2008, ASHRAE T, V115, P574; Ghaddar N, 2010, INT J ENERG RES, V34, P1328, DOI 10.1002-er.1677; Ghali K, 2007, INT J ENERG RES, V31, P743, DOI 10.1002-er.1266; JIANG Z, 1992, ASHRAE TRAN, V98, P33; Kanaan M, 2010, HVACandR RES, V16, P765, DOI 10.1080-10789669.2010.10390933; Keblawi A, 2009, ENERG BUILDINGS, V41, P1155, DOI 10.1016-j.enbuild.2009.05.009; Keblawi A, 2011, ENERG BUILDINGS, V43, P1359, DOI 10.1016-j.enbuild.2011.01.021; KOFOED P, 1991, THESIS AALBORG U, P168; Mesheshwari G.P., 2005, P 3 INT C EN RES DEV, P115; MOSSOLLY M, 2008, ASHRAE T, V115, P541; MUNDT E, 1996, THESIS KTH BYGGFORSK; Nielsen PV, 2007, HVACandR RES, V13, P987, DOI 10.1080-10789669.2007.10391466; Rouse H., 1952, TELLUS, V4, P201, DOI 10.1111-j.2153-3490.1952.tb01005.x; *STAT KUW, 1982, THERM BUILD COD; SUZUKI T, 2007, 6 INT C IND AIR QUAL; Xu M, 2001, INDOOR AIR, V11, P111, DOI 10.1034-j.1600-0668.2001.110205.x; YAMANAKA T, 2002, P ROOMVENT 2002 COP; YAMANAKA T, 2007, ROOMVENT 2007 HELS F; Yuill DP, 2008, HVACandR RES, V14, P345, DOI 10.1080-10789669.2008.10391013
dc.description.citedCount 5
dc.description.citedTotWOSCount 5
dc.description.citedWOSCount 5
dc.format.extentCount 12
dc.identifier.coden ENEBD
dc.identifier.scopusID 80053320873
dc.publisher.address PO BOX 564, 1001 LAUSANNE, SWITZERLAND
dc.relation.ispartOfISOAbbr Energy Build.
dc.relation.ispartOfIssue 10
dc.relation.ispartofPubTitle Energy and Buildings
dc.relation.ispartofPubTitleAbbr Energy Build.
dc.relation.ispartOfVolume 43
dc.source.ID WOS:000295297700016
dc.type.publication Journal
dc.subject.otherAuthKeyword Chilled ceiling displacement ventilation
dc.subject.otherAuthKeyword Contaminant transport in plumes
dc.subject.otherAuthKeyword Indoor air quality with mixed return air
dc.subject.otherIndex Air temperature
dc.subject.otherIndex Breathing zones
dc.subject.otherIndex Chilled ceiling
dc.subject.otherIndex Contaminant transport
dc.subject.otherIndex Displacement ventilation
dc.subject.otherIndex Extended model
dc.subject.otherIndex External loads
dc.subject.otherIndex External walls
dc.subject.otherIndex Fresh air
dc.subject.otherIndex Indoor air quality
dc.subject.otherIndex Maximum error
dc.subject.otherIndex Model prediction
dc.subject.otherIndex Office space
dc.subject.otherIndex Save energy
dc.subject.otherIndex Steady-state transport
dc.subject.otherIndex Transient conditions
dc.subject.otherIndex Air quality
dc.subject.otherIndex Atmospheric composition
dc.subject.otherIndex Energy conservation
dc.subject.otherIndex Energy utilization
dc.subject.otherIndex Experiments
dc.subject.otherIndex Forecasting
dc.subject.otherIndex Indoor air pollution
dc.subject.otherIndex Models
dc.subject.otherIndex Office buildings
dc.subject.otherIndex Ventilation
dc.subject.otherIndex Carbon dioxide
dc.subject.otherKeywordPlus DISTRIBUTION SYSTEMS
dc.subject.otherKeywordPlus OPERATION
dc.subject.otherKeywordPlus DESIGN
dc.subject.otherKeywordPlus MODEL
dc.subject.otherWOS Construction and Building Technology
dc.subject.otherWOS Energy and Fuels
dc.subject.otherWOS Engineering, Civil

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