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Joined: Oct 2004
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M
Megastar
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This sounds good, probably works...but will take a far longer time to cool the food, than we are now used to....I think.

Place a lump of Ion in a strong magnetic field, and it will increase in temperature slightly.
All to do with spin up, or spin down of the Electrons
The trick will require excellent heat transfer from the fridge food via small particles of doped iron that are being pumped around and thru a strong magnetic field. As I read it.

http://www.carbontrust.co.uk/NR/rdonlyres/7EDA3F5E-43B8-44A5-9F1C-CBD6E3501C04/0/200311203.pdf

Prehaps the 12volt Peltier insulated picnic boxes, you buy in most camping stores, would be more efficient, in terms of energy used?

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"You will never find a real Human being - even in a mirror." .....Mike Kremer.
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"You will never find a real Human being - Even in a mirror." ....Mike Kremer.


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Adiabatic demagnetization of paramagnetic salts (cryogenic trading entropy for temperature) is a half-century old. Einstein patented a magnetic refrigerator. At modest scale, the optimum solution (cheap, fast, effective) is an SOP Sears freon refrigerator. Civilization knows what it is doing. Enviro-whiners are against everything of value.

Look at the spin orientation energy gap of unpaired electrons (paramagnet) in a 1 tesla field. You get maybe a score in a thousand net population inversion near room temp. Do the Boltzmann distribution thermodynamics, N2/N1 = exp[-(E2-E1)/kT].

http://en.wikipedia.org/wiki/Population_inversion

It's horribly crappy in terms of watts/mass or watts/volume. Even with a higher efficiency magnetic amorphous metal alloy you still drive heat flow with electron orientational entropy. Electrons are ~0.03 mass-% of a solid. 99.7 mass-% of the working fluid is inert.

Quote:
...today's equivalent gas fridges that require environmentally toxic gases to operate.


That should have been your first clue. /_\G = /_\H - T/_\S. /_\H is typically three orders of magnitude larger than T/_\S. What does that tell you about heat engines vs. entropy engines? Also note the magnetic alloy is "being developed." It's Official Truth (bullsh*t).


Uncle Al
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http://www.mazepath.com/uncleal/qz3.pdf
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Uncle Al wrote:
"the optimum solution (cheap, fast, effective) is an SOP Sears freon refrigerator. Civilization knows what it is doing. Enviro-whiners are against everything of value."

Sure Al. Those of us that care about the quality of life on the planet are whiners and those of you fascinated by cheap and fast are what? Give it a break.

No doubt you would have been one of those people in Medieval Europe complaining about those biowhiners who wanted you to stop throwing your toilet slop into the street.

10,000+ years of doing it your way has taken us to here. Perhaps not repeating the same insanity for another 10,000 years might produce different, and better, results.


DA Morgan
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Uncle Al wrote:
"the optimum solution (cheap, fast, effective) is an SOP Sears freon refrigerator. Civilization knows what it is doing. Enviro-whiners are against everything of value."

Sure Al. Those of us that care about the quality of life on the planet are whiners and those of you fascinated by cheap and fast are what? Give it a break.

No doubt you would have been one of those people in Medieval Europe complaining about those biowhiners who wanted you to stop throwing your toilet slop into the street.

10,000+ years of doing it your way has taken us to here. Perhaps not repeating the same insanity for another 10,000 years might produce different, and better, results.


DA Morgan

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