Algorithm for evaluating hourly radiation utilizability function
Conference
·
· Am. Soc. Mech. Eng., (Pap.); (United States)
OSTI ID:5391767
A computationally simple algorithm is presented for evaluating the hourly utilizability function, /phi/, defined as the fraction of the long-term monthly-average hourly solar radiation incident on a surface which exceeds a specified threshold intensity. The hourly utilizability approach can be used for any azimuth and allows a different threshold intensity to be defined for each hour of the day. If needed, daily utilizability for any orientation can be found by summing results over a day. Hourly results are shown to compare favorably both with an analytical expression for /phi/ developed recently and with results obtained from many years of hourly horizontal radiation measurements.
- Research Organization:
- Solar Energy Laboratory, University of Wisconsin-Madison, Madison, WI 53706
- OSTI ID:
- 5391767
- Report Number(s):
- CONF-821101-
- Conference Information:
- Journal Name: Am. Soc. Mech. Eng., (Pap.); (United States) Journal Volume: 82-WA/SOL-19
- Country of Publication:
- United States
- Language:
- English
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