soalr irradiation

[jangada]

solar constant is defined as 1365 w/m2 .
what should be taken as solar insolation when it falls on parabolic trough on earth w/m2 .
I know it depends on location , time , lattitude

what is normal range in USA callifornis and in spain average figure
thanks

 

[IRstuff]

Lots of sites from websearch:

http://www.wattsun.com/resources/insolation_maps/map_index.html

TTFN

FAQ731-376

 

[EngAP]

Lots of information at the following:

http://www.builditsolar.com/Tools/tools.htm

In particular, check out the Radiation on Collector software tool under the "Solar position and Radiation Tools" section:

http://www.builditsolar.com/Tools/RadOnCol/radoncol.htm