cooling liquids!!

[adsl1981]

Hello,

 

This may seem like a bit of a silly question but out of interest is there anyway of keeping a liquid that is already very cold eg. liquid nitrogen and keeping it cold using electricity ! i know it seems silly but any ideas

 

 

Thank you

[xeluc]

The only two methods of keeping liquid nitrogen liquid (that I know of) are keeping it compressed and cooling it. I know there are ways of cooling things way below the boiling point of nitrogen (Using lasors for creating bose-einstine condensates for example) but I don't know of any.. "Consumer-friendly" ways of getting temperatures as low as the boiling point of nitrogen, except of course, setting out liquid nitrogen...

[Klaynos]

Continually put it through a Joule-Kelvin process...