Affiliation:
1. National Renewable Energy Laboratory, Golden, CO
2. Mountain Energy Partnership, Nederland, CO
Abstract
Abstract
This paper presents generalized results regarding the effect of surface orientation on annual incident solar radiation for locations in the United States. A surface-orientation factor (SOF) is defined, equal to Iann/Iann,max, the ratio of annual incident solar radiation for a particular orientation to annual incident solar radiation for an optimally oriented surface.
SOF contour plots can be used to conveniently indicate the effects of surface orientation over a range of tilt and azimuth angles (from horizontal to vertical and from south to east/west). Correlations, presented in this paper, can be used to calculate SOF’s based on latitude and a climate factor, w. Regional SOF contour plots indicate surface orientation effects by geographic region with boundaries determined according to latitude-w values. Effects of morning/afternoon cloudiness and snow cover are also addressed.
Publisher
American Society of Mechanical Engineers
Cited by
17 articles.
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