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Design and commissioning of a virtual image solar simulator for testing thermal collectors
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Moss, Roger W., Shire, G. S. F., Eames, P. C., Henshall, P., Hyde, T. and Arya, F. (2018) Design and commissioning of a virtual image solar simulator for testing thermal collectors. Solar Energy, 159 . pp. 234-242. doi:10.1016/j.solener.2017.10.044 ISSN 0038-092X.
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Official URL: http://dx.doi.org/10.1016/j.solener.2017.10.044
Abstract
A solar simulator has been designed and built for testing prototype (0.5 × 0.5 m) flat plate thermal collectors. An internally reflecting light tube generates multiple virtual images of the four halogen floodlights to ensure uniform illumination. Ray-tracing simulations were used to choose the tube dimensions and maximum allowable clearance. Illumination measurements agree well with these predictions.
The visible & near IR spectrum appears to follow a black body curve. In the absence of a “cold sky” IR filter there is a secondary, long wavelength IR spectral component that causes heating of the cover glass on a solar flat plate collector. The cover glass temperature can be maintained at typical outdoor levels using a cooling fan. The design would be well suited to LED illumination.
Simulation of solar collector response to this spectrum shows that an efficiency based on pyranometer readings is approximately 1% higher than would be obtained with an AM1.5 spectrum.
Item Type: | Journal Article | ||||||||||||
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Subjects: | T Technology > TJ Mechanical engineering and machinery | ||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||||||
Library of Congress Subject Headings (LCSH): | Solar collectors -- Research, Solar energy -- Research, Heat storage devices | ||||||||||||
Journal or Publication Title: | Solar Energy | ||||||||||||
Publisher: | Elsevier Ltd. | ||||||||||||
ISSN: | 0038-092X | ||||||||||||
Official Date: | 1 January 2018 | ||||||||||||
Dates: |
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Volume: | 159 | ||||||||||||
Page Range: | pp. 234-242 | ||||||||||||
DOI: | 10.1016/j.solener.2017.10.044 | ||||||||||||
Status: | Peer Reviewed | ||||||||||||
Publication Status: | Published | ||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||
Date of first compliant deposit: | 23 November 2017 | ||||||||||||
Date of first compliant Open Access: | 23 November 2017 | ||||||||||||
RIOXX Funder/Project Grant: |
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