Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I've just moved into my first place, and for reasons I do not condone or recommend I don't have any method of refrigeration right now. Luckily I now live very close to shops, so it isn't a big deal, but it made me think: if I really had to, what would be the most efficient way to keep food cool without using any electrical (or any other means which would be impractical) method of refrigeration?

share|cite|improve this question
Frankly this seems like a bit of a stretch for physics.SE. Maybe ? – nibot Feb 20 '11 at 22:19
If you have electricity, you can usually find a used dorm fridge for cheap on Craig's list. – iamnotmaynard Jul 2 '14 at 22:55
up vote 1 down vote accepted

There are cooler boxes . Have a look at . I had to make do with one such when my fridge went on the blink till it was repaired. They are as good in keeping food as ice boxes used to be. They just use the normal mains. If you have no electricity you could get one without used for picnics and buy ice every day to keep things cool.

share|cite|improve this answer

Pasteurized food is preserved for long time (boiled soup without opening the pan, for example).

share|cite|improve this answer
  • Wrapping your food in a moist towel will cool it due to water evaporation. You can use fan to enhance this effect.

  • For temperatures below zero, ask for some ice in the shop and mix it with salt.

share|cite|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.