spelland74 Posted September 11, 2017 Share Posted September 11, 2017 In the PVsyst help, the formula for calculating thermal losses is given as:U · (Tcell - Tamb) = Alpha · Ginc · (1 - Effic) http://files.pvsyst.com/help/thermal_loss.htmThe word "Tcell" suggests that this is the temperature of the actual cells inside the PV module, which is generally different (up to about 3 degrees Celsius hotter) than back-of-module temperature.But in the following post, Andre Mermoud seems to be using back-of-module / Array temperature interchangeably with cell temperature:http://forum.pvsyst.com/viewtopic.php?t=37&p=37Can you please clarify, in the formula above, what "Tcell" refers to? We want to extract Uv and Uc from measurements that a client of ours has made of Ginc and back-of-module temperature, and want to know whether we should do some modeling to obtain cell temperature from back-of-module temperature to apply in that formula? Link to comment Share on other sites More sharing options...
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