RV Fuel Issues & Prices - Post 'Em Here!
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Forum Discussion
pianotuna wrote:
Hi Lindsay,
I don't know why, but my 13500 btu ac only draws 960 watts (measured with a kill-a-watt unit).
Heat Pumps always have efficiencies greater than 100% because they suck even more heat out of already-cold reservoirs. Usually about 300% to 1000%. Otherwise they wouldn't be much use, would they? Huge shopping centers use heat pumps to control electrical costs.
It's an old trick in freshman Physics course tests when students are just learning the Carnot cycle to ask them to calculate heat pump efficiency. Most of them turn the equation upside down so that they get a more satisfying percentage less than 100%. But they are wrong. Heh heh heh. Happily, they never make THAT mistake again!
A little lesson there: the science is right and your seat-of-the-pants beliefs are wrong. Please apply that to the current Global Warming 'controversy'. Some people see things upside down. Trust Science.
