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DC FieldValueLanguage
dc.contributorMulti-disciplinary Studiesen_US
dc.contributorDepartment of Building Services Engineeringen_US
dc.creatorLeung, Yuk-nang Gus-
dc.identifier.urihttps://theses.lib.polyu.edu.hk/handle/200/1946-
dc.languageEnglishen_US
dc.publisherHong Kong Polytechnic University-
dc.rightsAll rights reserveden_US
dc.titleSimulation of active humidity control with a packaged air conditioner using heat-recovery-reheat coilen_US
dcterms.abstractA computer simulation program was developed to investigate the feasibility to achieve active humidity control and energy saving with a packaged air-conditioner using reheat coil which recovery waste heat rejected by the air-conditioner. The program consists of mathematical model of an air-cooled direct expansion (DX) air cooling system with heat recovery reheat coil and air-to-air heat exchanger, and a simple room model. The reheat coil was designed as an extension of the air-cooled condenser of the cooling system to recover heat being rejected by the system to reheat the supply air that may have been overcooled by the cooling coil of the system. The discretized mathematical model of DX system was derived with an emphasis on the air cooling, dehumidification and air reheating processes for studying the transient and steady state behavior of the system. The room model was designed to simulate indoor sensible and latent heat loads for studying the performance of the system in real life situation. Besides the typical cooling loads such as transmission heat losses, occupancy, home appliance and infiltration, moisture transport mechanism was included in the room model to simulate the variation in indoor humidity level. By using the program to simulate an air-cooled DX system operating under various conditions, the energy efficiency and operating characteristic of using the two reheating methods were compared. The results showed an air-cooled DX system using heat recovery reheat coil was found technically feasible and energy efficient for air-cooling and dehumidification applications.en_US
dcterms.extentxiii, 91, [43] leaves : ill. (some col.) ; 30 cmen_US
dcterms.isPartOfPolyU Electronic Thesesen_US
dcterms.issued2002en_US
dcterms.educationalLevelAll Masteren_US
dcterms.educationalLevelM.Sc.en_US
dcterms.LCSHHong Kong Polytechnic University -- Dissertationsen_US
dcterms.LCSHAir conditioning -- Simulation methodsen_US
dcterms.LCSHHeat recovery -- Simulation methodsen_US
dcterms.LCSHHumidity -- Controlen_US
dcterms.accessRightsrestricted accessen_US

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Please use this identifier to cite or link to this item: https://theses.lib.polyu.edu.hk/handle/200/1946