Space Power

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If so, then they form a complete solution to all of our energy needs. Burn gasoline, and get back more energy than was containeed in the gasoline. Rinse, Repeat. Over and over, until we have lots of surplus energy and prices fall to the vanishing point.

If it had been discovered that the laws of thermodynamics had been overthrown, it would have been international news. There would have been a Nobel Prize for the inventor.
--
The whole problem with the world is that fools and fanatics are always so
certain of themselves, but wiser people so full of doubts.
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contained in the fuel used to power the heat pump, under the right conditions. But that energy can't be efficiently stored or converted, only used to heat a space (or cool going the other way). The laws of thermodynamics are not violated, unless somebody can use the heat that was moved to drive a bigger engine than the heat pump originally employed. That's not going to happen.
It's not correct to say heat pumps are more than 100% efficient, the BTU's moved/BTU's consumed is described in terms of a coefficient of performance, which can be considerably more than 1. Unfortunately, the cost of the fuel to run the heat pump (usually electricity) is often a higher multiple compared to (for example) natural gas than the coefficient of performance, so the advantage is lost.
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ATP* wrote:

Do keep in mind that the energy used to move the heat from one side to another does not in itself provide heat(very little) Thus the efficiency factor is really a farce. The heat already exists from other none paid sources and is merely moved by the energy source you are paying the meter for.

One of the most efficient Air conditioners was fueled by natural gas and utilized an absorption unit. Very expensive to repair. Noe there are ways of converting that system for heat also.

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