Output: heat transfer coefficient

andfranz · Posts: 81

I have simulated a sunspace both with “1-AdaptiveConvectionAlgorithm” and with the algorithm “6-TARP“ (“based on variable natural convection based on temperature difference from ASHRAE algorithms”). I am using DesignBuilder v. 3.0.0.064 which is working with EnergyPlus 6.0. The surface temperatures and the air temperature change a lot. Considering the floor surface, its temperature is much lower than the air temperature during the diurnal hours and it is a little higher than the air temperature during the night. Therefore the difference DT between air and surface temperature changes in a relevant manner (it changes even the sign). I would aspect that also the internal heat transfer coefficient changes in a relevant manner, but, as you can see in the attached file and in the following image, it is practically constant.
With Regards

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