Author Topic: Your next refrigerator may run on magnets  (Read 693 times)

Offline AJ

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Your next refrigerator may run on magnets
« on: February 24, 2014, 09:02:28 PM »



Quote
Refrigerators with compressors could become obsolete within a decade as engineers improve on magnetic refrigeration technology.

Your current refrigerator is running on some pretty old technology. The compressor system inside has been the standard cooling force for around 100 years. It's about time for a change, and that change may be coming in the form of magnets.
Researchers at GE labs are showing off a prototype machine that runs a water-based fluid through a series of magnets. It's a new innovation that harnesses an old idea known as the magnetocaloric effect. The magnetocaloric effect describes what happens when certain kinds of metal alloys get hot when near magnets, and cool when pulled away.
Years of work have gone into building a prototype the size of a cart that can reduce the temperature by 80 degrees. "This is a big deal. We are on the cusp of the next refrigeration revolution," says lead researcher Venkat Venkatakrishnan.


Read more: http://news.cnet.com/8301-17938_105-57618644-1/your-next-refrigerator-may-run-on-magnets/#ixzz2uIb6lieb

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Offline DaleCaskanette

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Re: Your next refrigerator may run on magnets
« Reply #1 on: February 24, 2014, 09:11:23 PM »
good

Offline AJ

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Re: Your next refrigerator may run on magnets
« Reply #2 on: February 24, 2014, 10:02:14 PM »
Your a man of few words. ;)

So I'm reading up on magnetocaloric effect, keeping in mind that the article says...

Quote
The compressor system inside has been the standard cooling force for around 100 years. It's about time for a change

and then I come across this Wiki Page about magnetic refrigeration that says...

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The effect was first observed by the German physicist Emil Warburg (1881) and the fundamental principle was suggested by Debye (1926) and Giauque (1927).[1] The first working magnetic refrigerators were constructed by several groups beginning in 1933.

The first working magnetic refrigerators were made by several groups in 1933! Seems magnetic refrigeration an't all that new either.

One thing I have noticed over the last few years is as high tech and energy saving features increase the life expectance decreases.

But no one really seems to care anymore because when it's no longer feasible to repair a appliance that was the latest greatest thing 5 years ago the consumer is ready to purchase the next best thing to have come out anyway.


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Offline tgoods

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Re: Your next refrigerator may run on magnets
« Reply #3 on: February 24, 2014, 11:15:35 PM »
Magnetic refrigerators were supposed be here over ten years ago.  Magnetic refrigeration is common in use for cryogenics.  But it uses electromagnets and is not useful for household refrigerators.  Reseachers developed a refrigerator that uses permanent magnets.  It was all hyped up and then never heard from again.  I did some internet research and apparently the refrigerators start out working great but then the alloys start getting magnetized and lose all of their efficiency. We'll see if this turns out be anything or just hype.

Offline Bailey

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Re: Your next refrigerator may run on magnets
« Reply #4 on: February 25, 2014, 09:27:08 AM »
Brings to mind rotary engines and compressors and microwave dryers.

 

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