Net energy analysis of domestic solar water heating installations in operation

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dc.contributor.author Hernandez, Patxi
dc.contributor.author Kenny, Paul
dc.date.accessioned 2012-07-26T15:54:50Z
dc.date.available 2012-07-26T15:54:50Z
dc.date.copyright 2011 Elsevier Ltd. en
dc.date.issued 2012-01
dc.identifier.citation Renewable and Sustainable Energy Reviews en
dc.identifier.uri http://hdl.handle.net/10197/3729
dc.description.abstract The potential of solar water heating systems to reduce domestic energy use is frequently acknowledged. However there are two factors that are rarely discussed when studying this technology. Firstly the real performance of the installed systems in operation, and secondly a life cycle perspective of its energy use. These two issues are reviewed in this paper, and a field study in Ireland is also presented. In the review, some studies show that measured real performance of domestic solar water heating systems can be lower than expectations. Concerning their life cycle energy performance, existing studies show that the initial energy investment for the systems (their embodied energy) is a small portion of the energy savings over their lifetime with calculation paybacks generally lower than 2 years. On the field study carried in Ireland, representative of a maritime north European climate, the ‘energy payback’ based on the expected energy savings is between 1.2 and 3.5 years, values comparable to previous studies considering the less favourable climate and installation characteristics. However the measured energy savings generally worsened the life cycle energy performance of this technology and thus increased the energy payback period. The study concludes that while there is a real potential for life cycle energy savings through domestic solar water heating installations, devising mechanisms to ensure proper design, installation and operation of systems is essential for this technology. en
dc.description.sponsorship Irish Research Council for Science, Engineering and Technology en
dc.format.extent 982176 bytes
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Elsevier en
dc.rights This is the author’s version of a work that was accepted for publication in Renewable and Sustainable Energy Reviews. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Renewable and Sustainable Energy Reviews (2011) DOI: 10.1016/j.rser.2011.07.144 en
dc.subject Net energy en
dc.subject Domestic solar water heating en
dc.subject Life cycle energy en
dc.subject Embodied energy en
dc.subject Energy payback en
dc.subject.lcsh Solar water heaters--Evaluation en
dc.subject.lcsh Solar water heaters--Energy consumption en
dc.title Net energy analysis of domestic solar water heating installations in operation en
dc.type Journal Article en
dc.internal.availability Full text available en
dc.status Peer reviewed en
dc.identifier.volume 16 en
dc.identifier.issue 1 en
dc.identifier.startpage 170 en
dc.identifier.endpage 177 en
dc.identifier.doi 10.1016/j.rser.2011.07.144
dc.neeo.contributor Hernandez|Patxi|aut| en
dc.neeo.contributor Kenny|Paul|aut| en


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