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Study of the corrective factor involved when measuring the diffuse solar radiation by use of the ring method

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Study of the corrective factor involved when measuring the diffuse solar radiation by use of the ring method

INEICHEN, Pierre, et al.

Abstract

By comparing the diffuse solar radiation on a horizontal plane as continuously measured in Geneva over a full year using both a fixed ring and a moving disk, we conclude thet the ring corrective factor can be evaluated on the baisi of simple models, but with a daily uncertainty of the order of 5%. In this study, the iasotropy of the diffuse radiation can be used as a reasonable approximation, even if this assuption is not fully verified. More precise measurements would reuqire the use of a disk.

INEICHEN, Pierre, et al . Study of the corrective factor involved when measuring the diffuse solar radiation by use of the ring method. Solar Energy , 1984, vol. 31, no. 1, p. 113-117

DOI : 10.1016/0038-092X(84)90133-6

Available at:

http://archive-ouverte.unige.ch/unige:17188

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