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Wes[_2_] Wes[_2_] is offline
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Default Model engineering heat pumps

Richard J Kinch wrote:

Lloyd E. Sponenburgh writes:

Since that represents only about 50 BTUs it shouldn't
take that much muscle in a properly engineered device.


Richard, that would be roughly 1/4HP for five minutes.


1 KWH can pump 10,000 BTU in a 10 SEER heat pump. If we equate 746 watts to
1 HP, then you get 7460 BTUs pumped with 1 HP-hour. So pumping 50 BTUs
would take 50/7460 = 0.0067 HP-hour. That's about 0.08 HP for 5 minutes.
But who knows what efficiency you could build in that size. And how
thirsty you are for a cold one.


300W continous out of the legs of a trained cyclist is a reasonable number.

56W hand cranking seems a bit ambitious.

I got it, bar stool with pedals

Wes