Production efficiency of hot water for domestic use

De Montfort University Open Research Archive

Show simple item record Boait, Peter John en Fan, D. en Stafford, A. en Dixon, D. en 2012-09-03T13:48:54Z 2012-09-03T13:48:54Z 2012-07-26
dc.identifier.citation Boait, P.J., Fan, D., Stafford, A. and Dixon, D. (2012) Production efficiency of hot water for domestic use. Energy and Buildings, 54 pp. 160-168 en
dc.description Research performed under the Carbon, Comfort, and Control project jointly with Cardiff and Leeds Metropolitan Universities. en
dc.description.abstract This paper examines the efficiency (in terms of energy use and carbon emissions) with which 5 different types of domestic water heating system employed in the UK are able to produce hot water for sanitary use. A method of normalisation is employed allowing results from case studies with different systems and usage levels to be compared. Water heating appliances studied include gas boilers, a micro CHP, heat pumps, an immersion heater, and a solar thermal system. It is found that instantaneous production of hot water is much more efficient than delivery via tank storage for gas-fuelled systems. For electrical systems, an immersion heater is found to perform better in some circumstances than heat pumps and also has advantages when combined with a solar thermal system leading to the proposal that this combination offers the most potential as a low carbon method for domestic hot water provision in the long term. Opportunities are identified to improve the performance of all systems with storage through better control of heat inputs. Inconsistencies in, and problems of compliance with, established standards for mitigation of Legionella in hot water systems are also identified. en
dc.description.sponsorship EPSRC, Eon plc. en
dc.language.iso en en
dc.publisher Elsevier en
dc.subject Hot water storage en
dc.subject Domestic hot water en
dc.subject Solar water heating en
dc.subject Legionella en
dc.title Production efficiency of hot water for domestic use en
dc.type Article en
dc.researchgroup Institute of Energy and Sustainable Development
dc.peerreviewed Yes en
dc.explorer.multimedia No en
dc.ref2014.selected 1368778962_0910680216320_16_3

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