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Originally Posted by Piotrsko
Cooling plate is otherwise ise known as "heat sink" wonder how well that works in LA$ Vega$ or Phoenix or even in your neck of the woods during summer?
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It's a good point! At present, I don't know anything about BEV coolant temperatures experienced at SAE standard 60-F atmosphere, during EPA dynamometer certification testing.
The BTE-e for BEVs is given at 95%, so, we're looking at a 5% waste heat-flux that must be rejected to ambient conditions to protect the motor, pack, and power electronics.
That's 3412-Btu / KW, or 2546 Btu/ horsepower of waste heat.
My BOLT is absorbing 20.77- hp @ 65-mph.
On a 60-F day, the radiator would be required to reject 1.09-hp worth of heat ( 2,783-Btu/ hour ), or, 46.4-Btu/ minute.
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For air conditioning, we'd need the average mean heat transfer coefficient of the cabin envelope, its total surface are, metabolic heat load of the passengers, and solar gain from exposed, glazed fenestrations; knowing the insolation transmittance and radiative emissivity criteria.
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My present, Kitchen Aid, Energy Star-rated refrigerator has only cooling plates, compared to the Sears Roebuck fridge that it replaces, which had almost a 'whole-dimension', convection-driven, exposed heat exchanger on it's backside.