Quantum super refrigerator: )0.3 Kelvin!:

Originally posted by sonhouse
http://phys.org/news/2013-03-quantum-refrigerator-extreme-cooling-convenience.html

I have posted 3 questions at the bottom of the link with my most pressing one being:
"does this eliminate the need for coolants?"

Originally posted by humy
I have posted 3 questions at the bottom of the link with my most pressing one being:
"does this eliminate the need for coolants?"

The post says it takes almost 20 hours to get the temp down to .3 K, so I imagine the power is only a few watts of cooling.

I deal with Cryo pumps on a daily basis and they cool only down to about 10 degrees Kelvin and has a cold head with about 10 ish watts of cooling power, enough to make a pump, it freezes out atmospheric gasses onto activated carbon bits at 10 or 12 degrees K, so it makes a pretty good vacuum pump. I suspect this new cooler could replace the helium compressor, cryo pumps use helium gas as the heat transfer fluid.

But it would take a WHOLE lot of them to cool a room for instance, where you want maybe 10,000 BTU of cooling or so.