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To make 1kw you would need 3,412 BTUs if 100% efficient. So maybe 25% efficient so 13k BTUs.
If I remember correctly they aren't really efficient.
I think 100w is more realistic so you would only lose 1.3k BTUs. Which is a fraction of the heat you lose using the heater with the windows and the system on recirculation.
Plus if you build your teg unit up front and pipe the coolant to the unit you could control coolant flow with a valve and not open the valve till the engine warmed up.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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