the influence of array pitch on the temperature of PV module

[Chen]

Hi PVsyst team:

Did we do some studies about the temperature and convective heat transfer characteristics of PV module due to the different array pitch，or different array tilt angle，or fixed tilted installation horizontal axis N-S installation.

such as the pitch of  1# array is 4.5m, and the pitch of 2# array is 5m, in my opinion, the Uc and Uv coefficient will be different for the two array modules. meanwhile，choosing different sopport for photovoltaic modules can also have an impact on the temperature of the modules.  Will future software consider these intricate factors？ thanks

[Auriane Canesse]

Hello Chen,

We did not carry out dedicated studies on how array pitch affects the heat dissipation.

However, the thermal losses are indeed influenced by the PV module support structure and it affects the convective cooling on the back plane. The advised U coefficients corresponding to each structure type are described here:

https://www.pvsyst.com/help/project-design/array-and-system-losses/array-thermal-losses/index.html#u-value-determination

It is also possible to measure the U coefficient values for your installation as explained here:

https://www.pvsyst.com/help/project-design/array-and-system-losses/array-thermal-losses/u-value-measurement.html