It is and that's what I don't understand. If the inverters on average are about 98% efficient( I used 95% as a worst case scenario) how come there is so much wasted heat/ energy?
You cannot blow a fan the size I have through a heat sink and get that much heated air for hours if the wasted energy it's trying to remove is a couple of hundred watts or less.
I could literally heat the house with the heat I get off the thing.... If it heated up the same in winter which there isn't enough power to get it up to that temp.
I was looking at doing some sort of Ducted setup to put the heat in the house till I realised there wasn't any in winter and I sure as hell didn't want it in summer.
Most of the heat comes from the switching Mosfets that are doing the all the voltage regulation. Most of the weight of an inverter is in the heat sink to take the thermal rise in the components and keep them in their operating curve. Most inverters will throttle back on thermal overload so may not produce their full output which is another reason to keep them cool as possible. The amount of energy wasted when they even go the first step of throttling is a LOT more than you'll burn from using a fan that's for sure.
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