Hello Rob,nThanks for your help.nThat is kinda my approach until now, but I am not sure if I am being to critical about my results or if, on the contrary, I can refine the model much more. nThe simulation is steady state, and the heat generation (which I have the generic values) will increase the air temperature, that will be used to cool down other equipments which I have a detailed model and I am happy about. But the income air temperature will affect the cooling of these detailed equipments, and that's where I need to get.nSo, my approach was to design a full compact solid (with the dimensions of the actual component) to which I have assigned the value of heat generation (W). But I am not sure how thermal properties can change the value of air temperature, and how to work with them to have more robust results. What good practices should I use in this scenario? Should I just ignore the temperature that the solids reach and trust, as a steady state, that all the heat generated will be carried by the air and the temperature that gets to the detailed components will not change a lot with the temperature these unknown solids get to? Or should I try to match temperatures with some experimental data? If so, what methods should I use to calculate the thermal properties, knowing that the interior of these components is unkown?n