Refrigeration Efficiency & Nanotechnology

[brian_chapin]

Something to look forward to perhaps?

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NIST researcher Mark Kedzierski found that dispersing sufficient amounts of copper oxide particles 30 nanometers in diameter in a common polyester lubricant and combining it with the refrigerant R134a improved heat transfer by 50 to 275 percent. "We were astounded," he said in a NIST news release.
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link: http://www.ohsonline.com/articles/65771

[chemi-cool]

Thank you Brian for interesting post,
I hope that will be more than a "work" and we will be able soon to buy those copper oxide particles and use them but history shows that after a few more experiments, there are some problems.....

[Sergei]

In the chiller heat transfer from liquid to boiling refrigerant. Heat transfer coefficient of boiling refrigerant is higher than heat transfer coefficient of the liquid. Improving high coefficient will have a little impact on total heat transfer coefficient. So very little energy can be saved. Surprisingly, people look on the "moon" for energy savings. However, a lot of energy can be saved on the "earth" without huge investment.