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Determination of optimum tilt angle and orientation for solar collectors based on effective solar heat collection
Qilu University of Technology (Shandong Academy of Sciences), Jinan, China.
Tsinghua University, Peking, China.
China Southwest Architecture Design and Research Institute Corp. Ltd., Chengdu, China.
Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi. Royal Institute of Technology, Stockholm, Sweden.ORCID-id: 0000-0003-0300-0762
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2018 (engelsk)Inngår i: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 219, s. 11-19Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Determination of optimum tilt angle and orientation of solar collectors by maximizing the total solar radiation may overestimate the energy production benefits, because a considerable amount of solar radiation is ineffective for practical solar collectors. In this paper, the concept of effective solar heat collection is proposed to rule out the ineffective solar radiation that could not be converted to available energy. Accordingly, an optimized mathematical model is developed and used to determine the optimum tilt angle and orientation of solar collectors installed in Lhasa during the heating season. Compared with the total solar radiation based optimum results, there is a deviation of 5° in the optimum orientations based on the effective solar heat collection. The case study shows that it is not advisable to adjust the optimum tilt angle on a monthly basis because there is no significance change in total solar energy gains in comparison with the case of no such adjustment during the heating season. In addition, the correction factors to achieving the maximum effective solar heat collection are given at different tilt angles and orientations to guide installation of solar collectors in practical engineering applications.

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Elsevier Ltd , 2018. Vol. 219, s. 11-19
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URN: urn:nbn:se:mdh:diva-38911DOI: 10.1016/j.apenergy.2018.03.014ISI: 000430519200002Scopus ID: 2-s2.0-85044100516OAI: oai:DiVA.org:mdh-38911DiVA, id: diva2:1195571
Tilgjengelig fra: 2018-04-05 Laget: 2018-04-05 Sist oppdatert: 2018-05-11bibliografisk kontrollert

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