Re: [Amc-list] ELECTRO-RAMBLER =revisited=

[Wrambler242@xxxxxxxxxxx]

I don't k now the technology of it enough to argue with anyone. All I know is it seems silly to heat water to heat air if your using electricity as the starting point to generate the heat. 
  My thinking was that the loss you may incur due to using resistance heat to air for short durations would likely be made up over all the spring, summer,fall days you were not hauling the Pump/Water heating unit, reservoir, fluid and the factory heater box/core! Talking overall comparisons as that is what it ends up being afterall....

--
Mark Price
Morgantown, WV
1969 AMC Rambler, 4.0L, EFI, T-5

 -------------- Original message ----------------------
From: Tom Jennings <tomj@xxxxxxx>
> On Fri, 27 Apr 2007, Swygert, Francis G MSgt 436 CES/CECM wrote:
> 
> > Electric resistance heat is very inefficient.
> 
> Hmmm actually it's 100% efficient. What's in-efficient is
> creating and storing the electricity. A 100V, 1A heater produces
> precisely 100 watts of heat with no loss -- the heat IS the loss!
> 
> A gallon of hot water stores a lot of heat energy in it's
> mass. It's a different unit of measure though, it stores watts
> * time.
> 
> 
> A 100watt heater made of a short piece of wire makes 100 watts
> of heat, which might take the form of a small column of 500
> degree air. Put that same 100 watt heater in a gallon of water
> and it raises the temperture (some number). If the air-heater,
> and the water-heater, are run for the same number of seconds,
> the same amount of heat energy is generated, and the "cost"
> is the same -- measured in watt-seconds.
> 
> This part is interesting and counter-intuitive until you actually
> do it -- if you were to actually set the up and measure it,
> and plot the temperature on paper as a function of time,
> (temp vertical, time horizontal) as a graph (wire very hot,
> not very long; water warm, for a long time) you'll find that
> the area enclosed by the curve on the paper will be EXACTLY
> THE SAME... it's called Integration.
> 
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