 Effect of inlet design on the performance of storage-type domestic electrical water heatersAdel A. Hegazy Applied Energy, 2007, vol. 84, issue 12, 1338-1355 Abstract: The effect of inlet design on the performance of storage-type domestic electrical water heaters (EWHs) was experimentally investigated for energy conservation. Three different side-inlet geometries; namely wedged, perforated, and slotted pipe-inlets; were tested using two 50Â L capacity EWHs of aspect ratios 1 and 2 and two discharge rates 5 and 10Â L/min. The three inlet designs are successful in promoting good thermal stratification inside the storage tanks of the EWHs. However, the degree of mixing produced by each design is found to have a significant impact on the performance. Thermal performance is quantified in terms of discharge efficiency, extraction efficiency, and fraction of heat recoverable. The results show an excellent performance for the slotted inlet. Although performance measures of perforated inlet are slightly less, the slotted inlet is attractive as it is simpler to manufacture and the extra cost associated with adopting it inside the existing EWH models is justified by the substantial savings in electricity and water consumptions, which ultimately concern the users. Keywords: Electric; water; heaters; Thermal; stratification; Thermal; storage; Hot; water; Energy; conservation (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:84:y:2007:i:12:p:1338-1355 Ordering information: This journal article can be ordered from Access Statistics for this article Applied Energy is currently edited by J. Yan More articles in Applied Energy from Elsevier |
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