living without a fridge/freezer

[Scythe13]

Number 1 issue there seems to be cider!

In WW1 (might have been WW2, I can't remember which) plane piolets used to fill a bucket with petrol, leave the top open, then turn a plane engine on, just by the bucket. This is as Tarrel has explained, but colder. The beers diffused their heat into he petrol and the higher energy petrol rose to the surface of the bucket. Thus the warmer petrol was blown away and the subsequent removal of the higher energy particles resulted in a lower average temp of the bucket's contents. Basically, heat went from beer to petrol then removed, thus cooling the beer down. Decadent in the war...? Maybe. Useful physics? Definitely!

As of late I've been experimenting with sleeping bags as a way to keep stuff cool. It's remarkably effective! Keeps heat in via insulation, but keeps heat out, via insulation too. Got a load of unmelted choc in the car, all under a sleeping bag,while it's 25 outside and the car is greenhousing!!! I'm stunned by it's efficiency!