The ASHRAE clear sky model-an evaluation

Journal Article · Sun Oct 31 23:00:00 EST 1982 · ASHRAE Trans.; (United States)

OSTI ID:6066637

Powell, G L

Using hourly data collected during 1977 at 31 NOAA solar monitoring stations, the general validity of the ASHRAE approach to estimating solar radiation under cloudless conditions has been confirmed. The comparative superiority of an alternative version of the ASHRAE model, using elevationcorrected optical air mass rather than the clearness number concept, has also been demonstrated. The revised model allows for decreased attenuation due to all relevant atmospheric constituents with increased station elevations and provides for the extension of the ASHRAE technique to sites other than those for which clearness numbers are available.

• Research Organization: Environmental Services Department, Salt River Project, Phoenix, Arizona
• OSTI ID: 6066637
• Journal Information: ASHRAE Trans.; (United States), Journal Name: ASHRAE Trans.; (United States) Vol. 24:11; ISSN ASHTA
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140100* -- Solar Energy-- Resources & Availability
DIRECT SOLAR RADIATION
LEVELS
MATHEMATICAL MODELS
METEOROLOGY
MONITORING
NATIONAL ORGANIZATIONS
OFFSHORE SITES
OPACITY
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RADIATIONS
SKY
SOLAR FLUX
SOLAR RADIATION
STELLAR RADIATION
US NOAA
US ORGANIZATIONS