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G4IJL > FUEL 12.02.11 21:33l 45 Lines 1388 Bytes #999 (0) @ WW
BID : 760145G4IJL
Read: GUEST
Subj: Re: G6KUI > Heat Pumps experience
Path: DB0FHN<DB0MRW<DB0ERF<DB0FBB<DB0IUZ<DB0GOS<ON0AR<ON4HU<DB0RES<DK0WUE<
IK6ZDE<IW0QNL<VE2PKT<N4JOA<GB7CIP<GB7COW
Sent: 110212/1749Z @:GB7COW.#44.GBR.EU #:44042 [240651] FBB7.01.35 alpha
From: G4IJL@GB7COW.#44.GBR.EU
To : FUEL@WW
> You'd better rethink that 300% efficiency figure before it starts raining
> frogs and not all of them originating from New Jersey.
>
> 73 de Warren
Oh Warren, its easy. 100% energy input (mains electricity), plus 200% from
environmental heat (warm air) gives the 300%
It's a rule of thirds. I am not happy the way the heat pumping was
described, but I got the picture. Perhaps this would be simpler
Quantity of energy out of the heater is 100% of which 33% was the
electricity used. So that 66% of the heater output was extracted from the
environment.
Note; any warmth source can be used, but the greater the mass per cubic
metre and the warmer it is the better the transfer of heat. I have heard
of the following sources;
1 waste heat from buildings
2 fresh air
3 rivers or bodies of water (only watch for freezing the water when
cooling water)
4 Geothermal low grade warmth not like Iceland or Yellowstone park
5 mega compost heaps or digesters (for recycling muck and organic matter)
6 Solar collectors (thermal not photovoltaic)
7 Nuclear dumps although I have not heard about this one. Atomic waste
gets hot for centuries. A sort of secondary reactor.
73 - Paul, G4IJL @ GB7COW
Message timed: 16:41 on 2011-Feb-12
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G4IJL located IO92KX
Worked all Britain SK54
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