Estimation of monthly mean hourly global radiation for latitudes in the 1[degrees]N-81[degrees]N range

Journal Article · Tue Mar 01 04:00:00 EST 1994 · Solar Energy (Journal of Solar Energy Science and Engineering); (United States)

DOI:https://doi.org/10.1016/0038-092X(94)90489-8· OSTI ID:7285638

Soler, A ^[1]; Gopinathan, K K

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1. Escuela Tecnica Superior de Arquitectura, Madrid (Spain)

A way to estimate monthly mean hourly global radiation ([bar I]) from monthly mean daily global radiation ([bar H]) has been to use fits which give [bar r] = [bar I]/[bar H] as a function of [bar S][sub o], the monthly mean daily maximum possible number of sunshine hours. In the present work it is shown that these plots are by no means of universal validity, but are clearly dependent on latitude for high latitudes. A new type of correlation is proposed, which give [bar r] as a function of [bar [alpha]], the solar elevation at mid-hour. The values of coefficients for the [bar r] versus [bar [alpha]] correlations are given for each month of the year, for the hours centered at 0.5 h, 1.5 h, 2.5 h, etc. from the true solar noon, and stations with latitudes in the 1[degrees]N-81[degrees]N range. The given coefficients are most likely valid for any latitude, north or south.

• OSTI ID: 7285638
• Journal Information: Solar Energy (Journal of Solar Energy Science and Engineering); (United States), Journal Name: Solar Energy (Journal of Solar Energy Science and Engineering); (United States) Vol. 52:3; ISSN SRENA4; ISSN 0038-092X
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140100* -- Solar Energy-- Resources & Availability
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
CORRELATIONS
ENERGY
ENERGY SOURCES
FORECASTING
GEOGRAPHICAL VARIATIONS
HOURLY VARIATIONS
LATITUDE EFFECT
NUMERICAL SOLUTION
RADIATIONS
RENEWABLE ENERGY SOURCES
SOLAR ENERGY
SOLAR RADIATION
STELLAR RADIATION
VARIATIONS