Apologies for the delayed response. When I add convection to method #2 by adding Newton's Law of Cooling to the equation, it barely changes the area required and it's still significantly lower than the other methods. Is this too simplified of equations to simulate the situation? Conduction...
Thanks for the quick replies. Installations will be inside, not exposed to sunlight. I'm using the same input data for the methods with heat transfer equations, with ΔT = 20°C assuming 20°C outside the enclosure and a max temp of 40°C inside (this is the max from the VFD vendor).
The 18W heat...
Hi everyone. I am designing stainless steel, NEMA 4X electrical enclosures for VFDs and to reduce costs, the goal is to use passive cooling only and dissipate heat through the enclosure itself. I've attempted to calculate the required surface area to dissipate heat through three different...
