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Chillers energy consumption, energy savings and emission analysis in an institutional buildings

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dc.citedby100
dc.contributor.authorSaidur R.en_US
dc.contributor.authorHasanuzzaman M.en_US
dc.contributor.authorMahlia T.M.I.en_US
dc.contributor.authorRahim N.A.en_US
dc.contributor.authorMohammed H.A.en_US
dc.contributor.authorid6602374364en_US
dc.contributor.authorid23569048700en_US
dc.contributor.authorid56997615100en_US
dc.contributor.authorid35580738100en_US
dc.contributor.authorid15837504600en_US
dc.date.accessioned2023-12-29T07:50:07Z
dc.date.available2023-12-29T07:50:07Z
dc.date.issued2011
dc.description.abstractChillers consume more than 40% of the total energy used in the commercial and industrial buildings for space conditioning. In this paper, energy consumption by chillers and chilled water pumps, condenser pumps and fan motors has been estimated using data collected by a walkthrough energy audit for the 16 faculties of the University of Malaya. It has been estimated that chillers and motors and pumps used in chillers consume 10,737 MWh (i.e. 51% of total energy consumption) of electric energy for different percentage of loadings. As chillers are major energy users, variable speed drives are applied in chillers to reduce their energy consumption. It has been estimated that about 8368 MWh annual energy can be saved by using efficient chillers at different loadings. It has also been found that about 23,532 MWh annual energy can be saved for chilled water supply pumps, condenser pumps and cooling tower fan motors by matching required speeds using variable speed drives for 60% of speed reduction. About 1,274,692 kg of CO2 emission could be avoided for using energy efficient chillers at 50% load. It has been also found that about 2,426,769 kg CO2 emission can be reduced by using variable speed drives for 60% speed reductions. Payback periods found to be only few months for using variable speed drives in chilled water pumps, condensers and fan motors. � 2011 Elsevier Ltd.en_US
dc.description.natureFinalen_US
dc.identifier.doi10.1016/j.energy.2011.06.027
dc.identifier.epage5238
dc.identifier.issue8
dc.identifier.scopus2-s2.0-79961029197
dc.identifier.spage5233
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-79961029197&doi=10.1016%2fj.energy.2011.06.027&partnerID=40&md5=772386cab50f7a1a8fd1bbe2ce290411
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/30603
dc.identifier.volume36
dc.pagecount5
dc.publisherElsevier Ltden_US
dc.sourceScopus
dc.sourcetitleEnergy
dc.subjectChiller
dc.subjectEmission reductions
dc.subjectEnergy saving
dc.subjectVariable speed drive
dc.subjectCarbon dioxide
dc.subjectCondensers (liquefiers)
dc.subjectCooling towers
dc.subjectEmission control
dc.subjectEnergy utilization
dc.subjectIndustrial emissions
dc.subjectInvestments
dc.subjectOffice buildings
dc.subjectPumps
dc.subjectSpeed
dc.subjectVariable speed drives
dc.subjectWater cooling systems
dc.subjectWater supply
dc.subjectChilled water
dc.subjectChiller
dc.subjectElectric energies
dc.subjectEmission analysis
dc.subjectEmission reductions
dc.subjectEnergy audit
dc.subjectEnergy efficient
dc.subjectEnergy users
dc.subjectIndustrial buildings
dc.subjectInstitutional building
dc.subjectPayback periods
dc.subjectSpace conditioning
dc.subjectSpeed reduction
dc.subjectTotal energy
dc.subjectTotal energy consumption
dc.subjectVariable speed
dc.subjectWalkthroughs
dc.subjectannual variation
dc.subjectbuilding
dc.subjectcarbon dioxide
dc.subjectcarbon emission
dc.subjectemission control
dc.subjectenergy efficiency
dc.subjectfuel consumption
dc.subjectpump
dc.subjectwater supply
dc.subjectEnergy efficiency
dc.titleChillers energy consumption, energy savings and emission analysis in an institutional buildingsen_US
dc.typeArticleen_US
dspace.entity.typePublication
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