This isn't a subject that I know much about, but from doing some casual Google searches, surprisingly the above paragraph appears to be true. Here is what appears to be a current version of the device (a "Wirbelrohr"):
Apparently, all it takes is some compressed air, and out comes cool air on one side and hot air on the other.
One source mentioned that as far back as 1958 such a device appeared in the old Scientific American Amateur Scientist column.
Commercially, there appears to be a company that sells these devices. Here's an English translation courtesy of Google of a page from their website:
Principle of the wirbelrohrs
Our wirbelrohre are available in many sizes with different cooling performance.
Standing: 308BSP and 208BSP
Lying: 106BSP and 328BSP
Wirbelrohre
The principle of the wirbelrohrs:The wirbelrohr was discovered 1930 by the French physicist Georges Ranque. Vortec was the first enterprise, which developed effective applications of cooling for the industry on the basis of the eddy tubing principle use in general practice. Here a short description of the eddy tubing principle follows.
Liquid, which turns around an axle - like a Tornado -, as "eddy" designated. A wirbelrohr produces an eddy from compressed air and separates it into two rivers, a hot and a cool air stream. Compressed air occurs a cylindrical generator, which is proportionally larger than (for a long time) is called pipe, where she shifts air there present in turn. Afterwards circling air at the inner wall of the hot pipe is pressed along, where it reaches speeds of 1,000,000 U/min. At the end of the hot pipe a small part of this air escapes by a needle valve at the hot-air withdrawal. Remaining air is led back obligatorily with lower speed by the center of the occurring air flow. The warmth in more slowly flowing air is transferred to faster flowing occurring air. Undercooled air flows by the center of the generator to the cool air withdrawal.
The wirbelrohre of ITW Vortec are available in a broad size scale for different process and applications of point cooling. They offer still higher cooling performance than the cool air pistols.
Characteristics:
- Cooling without refrigerants (CFC/HCFC) and without moved parts, thus reliably and interference-proof
- no electricity, intrinsically safe, no HF disturbances
- compact and easy building method, thus easy installation, also within with difficulty accessible, narrow ranges
Model Compressed air 100 PSIG Compressed air 6.9 bar kcal/h
> > > Mailsupport
> > > telephone support
Consumption
SCFM Consumption
l/min. Temperature
Waste °C * 106bsp-2-h 2 57 34 25 106bsp-4-h 4 113 44 64 106bsp-8-h 8 227 45 101 208bsp-11-h 11 312 47 161 208bsp-15-h 15 425 47 227 208bsp-25-h 25 708 37 378 308bsp-35-h 35 992 42 668 328bsp-50-h 50 1416 44 756 328bsp-75-h 75 2125 47 1134 328bsp-100-h 100 2833 43 1512Achievement in kcal/h with compressed air dried by 21°C, on a dew point of -40°C.
* The temperature of the air flow can be lowered additionally around 11°C. Lower air flow temperatures can be reached, as the hot-air stream is strengthened by the attitude of the needle valve. The needle valve is in the hot-air withdrawal. Wirbelrohre produce at smaller air flow, lower temperatures and smaller kcal/h achievement.
Accessories: Model Description 106GEN independent generator for wirbelrohr indicate 106 when ordering: 2, 4 or 8 SCFM 106MCBSP Cold the muffler for wirbelrohr 106 208GENindependent generator for wirbelrohr indicate 208 when ordering: 11, 15, 25 or 35 SCFM 208MCBSPCold the muffler for wirbelrohr 208 or 308 208MHBeing called muffler for wirbelrohr 106 or 208 308MHBeing called muffler for wirbelrohr 308 328MCold or being called muffler for wirbelrohr 328 328XBindependent generator for wirbelrohr indicate 328 when ordering: 50, 75 or 100 SCFM
The hottest atoms are the fastest moving. So in a whirl,
gasatoms that are faster move quicker to the outside and leave the slower behind.
voila, cooling inside heating outside.
It may very well be true that the sun is cooler at the core, afterall this isnt at all like an open fire and lot of fusion science is only a few years old.
Dont forget that the pressure in the centre of the sun has got to be enormous, and gas under pressure has its boiling termperature barrier increased. so maybe the inside is solid and cool afterall.