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DC FieldValueLanguage
dc.contributorDepartment of Building Services Engineeringen_US
dc.creatorGuan, Yue-
dc.identifier.urihttps://theses.lib.polyu.edu.hk/handle/200/3456-
dc.languageEnglishen_US
dc.publisherHong Kong Polytechnic University-
dc.rightsAll rights reserveden_US
dc.titleEnergy conservation measures for domestic washroomsen_US
dcterms.abstractAs it is advantageous to enhance the efficiency of energy use and improve the ways of saving energy, energy conservation measures play an important role in construction. For example, energy saving measures in residential hot water systems is increasingly a concern for sustainable building designs. This study attempts to investigate the energy saving by using a heat exchanger in hot water system of bathroom and suggest methods for efficient heat recovery. The hot water in drainage pipe was used to preheat the supply cold water. Based on many different forms of heat exchange, a model was built to simulate the situation of heat exchange between hot water and cold water. The principles of heat exchanger were based on the e - NTU approach. Through experiments, the heat exchange effectiveness of a counter-flow heat exchanger was obtained in a partially filled slope. The emphasis of this study is energy conservation of this heat recovery approach using heat exchanger in domestic washrooms. The experiment results show that it will be a 7%-12% energy saving percentage if using the heat exchanger to recover the heat in waste hot water. It is feasible that this heat recovery approach is used for residential building. For better performance of heat exchange, it is suggested to use the spiral pipe to improve the transfer coefficient of heat exchanger. And a filter must be installed in the waste water pipe to ensure the fluid flows.en_US
dcterms.extentxi, 58, [29] leaves : ill. (some col.) ; 30 cm.en_US
dcterms.isPartOfPolyU Electronic Thesesen_US
dcterms.issued2008en_US
dcterms.educationalLevelAll Masteren_US
dcterms.educationalLevelM.Eng.en_US
dcterms.LCSHHong Kong Polytechnic University -- Dissertations.en_US
dcterms.LCSHToilets -- Energy conservation.en_US
dcterms.LCSHDwellings -- Energy conservation.en_US
dcterms.LCSHHeat exchangers -- Design and construction.en_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/200/3456