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A critical review of the ASHRAE solar radiation model

Conference · · ASHRAE Trans.; (United States)
OSTI ID:7146536

Inconsistencies are shown to exist in the presentation and formulation of the ASHRAE solar radiation model. To remove them, it is proposed: 1. To include in the Fundamentals Handbook the clearness number in the expressions for the direct and, in particular, the sky diffuse irradiation under cloudless conditions, and 2. To rewrite the expressions for cloud sky conditions so that they reduce to the cloudless formulation when the cloud cover is zero and they do not give rise to negative values of the sky diffuse irradiation as is presently the case under certain conditions.

Research Organization:
Universite de Sherbrooke, Quebec
OSTI ID:
7146536
Report Number(s):
CONF-860106-
Journal Information:
ASHRAE Trans.; (United States), Journal Name: ASHRAE Trans.; (United States) Vol. 92:1A; ISSN ASHTA
Country of Publication:
United States
Language:
English

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