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Author Topic: Popular Mechanics Feb 1978  (Read 2750 times)

Offline FreeEnergy

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Popular Mechanics Feb 1978
« on: August 29, 2010, 09:14:48 PM »

Free Energy | searching for free energy and discussing free energy

Popular Mechanics Feb 1978
« on: August 29, 2010, 09:14:48 PM »

Offline spinn_MP

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Re: Popular Mechanics Feb 1978
« Reply #1 on: August 29, 2010, 09:21:30 PM »
"It doesn't give you something for nothing..."   Eh?

"But it does operate at more than 100% efficient..." Aha...

What regarding the heat pumps is a mystery here?


Offline exnihiloest

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Re: Popular Mechanics Feb 1978
« Reply #2 on: August 30, 2010, 10:39:42 AM »
"It doesn't give you something for nothing..."   Eh?

"But it does operate at more than 100% efficient..." Aha...

It is true if we consider that external heat from the environment is "nothing", i.e free. Then a heat pump has an apparent efficiency >100% (a not real efficiency that in this case should be called "COP"): the quantity of heat energy transfered from the environment to the system or from the system to the environment is more than the energy needed to power the device.
The underlying principle is that we don't theoretically need energy to transfer a certain amount of heat from one point to another (but our machines have not 100% efficiency). It is a well known fact from conventional physics. Physics laws prevent OU in a closed system, but not in an open system.

If we could loop the device, it would lead to an apparent perpetual motion which in fact is a system exchanging energy with its environment. It is theoretically possible but not yet feasible because the real efficiency of the heat pumps is not enough. Some have calculated that the future magnetic heat pumps could have enough efficiency for that. In any case such systems would still increase entropy according to the physics laws, but from a practical viewpoint and while the environment can provide/absorb heat energy, it would be "free" energy.




Free Energy | searching for free energy and discussing free energy

Re: Popular Mechanics Feb 1978
« Reply #2 on: August 30, 2010, 10:39:42 AM »
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Offline what123

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Re: Popular Mechanics Feb 1978
« Reply #3 on: September 11, 2010, 07:13:42 AM »

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