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[–] Morbo 0 points 2 points (+2|-0) ago 

Put more simply, a 10 KW generator would require more than 10 KW of mechanical energy input to generate the full 10 KW. There's no free ride in energy conversion. Also, miniaturizing the generator would drop its output. The size of the stator poles, windings and magnets have a direct relationship to the output power. Reduce any of these in size and you also drop the output. Physics doesn't compromise.

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[–] Wazhappenin1 ago 

Sure I used a 10 kW because that's the size I have it takes 34000 btu an hour. To run only a water pump and fridge and a few lights you could get away with a a much smaller one.

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[–] pushthis [S] ago 

But when that 10kw is used, inside the shelter, 34000btu is made. Just like a 40w incandescent bulb.

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[–] Morbo ago 

If you're losing all the generated energy to heat (BTUs), then what's the point of having the generator? OP wants to generate electricity. Yes I know a BTU is a unit of energy, but it is specifically a unit of heat energy not electricity and should not be used to describe electrical work capacity.