Assumptions made for temperature increases and wind cooling effect on PV solar systems

  • Caribhomes
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16 Dec 2012 01:50 #1078 by Caribhomes
Assumptions made for temperature increases and wind cooling effect on PV solar systems was created by Caribhomes
What assumptions are made for the adjusting for temperature increases above testing temperature of 25 degrees celcius ?

I assume that the calculations are considering wind speed per m/s different from 1 m/s as testing conditions and then apply the effect of convection free and forced to the panel, howevere is it possible to see the calculation made in the SAM system ?

What is the upper limited where temperature and wind would have any impact on the PV panel ?, obviously if we have a hurricane we would still have a certain NOCT temperature of the panel, where is the upper and lower limits for the calculations ?

IS it Newtons second law applied or ?, please advise

Paul

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  • Paul Gilman
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19 Dec 2012 16:56 #1079 by Paul Gilman
Replied by Paul Gilman on topic Assumptions made for temperature increases and wind cooling effect on PV solar systems
Dear Paul,

I assume you are asking about one of SAM's photovoltaic models. The flat-plate PV, PVWatts, and High-concentration PV models all account for the effect of temperature on the module's performance, and use ambient temperature and wind speed data from the weather file to adjust the array's performance accordingly.

I'm not sure about the limits you describe. Do you have weather data with these extreme values?

You can read about the temperature correction calculations for two of SAM's PV module models, the Sandia and simple efficiency models in SAM's Help system in the Module topic .

Best regards,
Paul.

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