OT How much HP to run the alternator, fan, water pump, and AC compressor?

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Posted by Igore ( on 12:39:43 03/28/11

The members of this group seems to know something about everything automotive.

I'm doing a little back of the envelope engineering and came to a point where I need to know some typical numbers. What is the typical "hotel load" on a modern car or truck for the alternator, cooling fan, water pump, and AC compressor? This can be in kW, horsepower, or BTU, or any other work unit.

What I'm looking at is a new thermal to electricity conversion device developed by Northwestern University researchers that is said to be about 13% efficient at converting heat into electricity. The article is referenced in the link below.

If the practical results are even half of those reported in the article, this is truely a breakthrough for many applications.

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