Calculation of Monthly Average Daily Global and Diffuse Solar Radiation and on a Horizontal Surface.

Keyword Monthly Average Clearness Index,Monthly Average Daily Global and Diffuse Solar Radiation on a Horizontal Surface,Solar Constant,Latitude,Monthly average day,Day number,Monthly average Declination of Sun,Monthly average Sunset Hour Angle.

Reference [1]：Rezachek,David Allen：『Development of a solar pond system design computer model』University of Hawaii,1991 [2]：Natural Resources Canada：『RETScreen Engineering & Cases Textbook Third Edition』.

Remarks ・KT：Monthly Average Clearness Index. 0.3(for very overcast climates) and 0.8(for very sunny locations).[2]. ・φ：Latitude.North(+),Siuth(-). ・δ：Declination of Sun.North(+),Siuth(-). ・ωs：Solar Hour Angle at Sunset. ・H0(J/m^2/day , Wh/m^2/day)：Monthly Average Extraterrestrial Daily Solar Radiation on a Horizontal Surface. ・H(J/m^2/day , Wh/m^2/day)：Monthly Average Daily Global Solar Radiation on a Horizontal Surface. ・Hd(J/m^2/day , Wh/m^2/day)：Monthly Average Daily Diffuse Solar Radiation on a Horizontal Surface. ・LaTex：　\\\bar{K}_{T}=\bar{H}/\bar{H}_{0}\\\bar{H}_{d}/\bar{H}=\begin{cases} &\\1.391-3.560\bar{K}_{T}+4.189{\bar{K}_{T}}^{2}-2.137{\bar{K}_{T}}^{3}\\\text{ ,if } \omega _{s}\text{ is less than } 81.4^{\circ} \\ & \\1.311-3.022\bar{K}_{T}+3.427{\bar{K}_{T}}^{2}-1.821{\bar{K}_{T}}^{3}\\\text{ ,if } \omega _{s}\text{ is greater than } 81.4^{\circ}\\ \\\end{cases} ・Making above Equation Image is powered by CODECOGS

History ・2010/07/05：Upload.