The most economical refrigerator substitute for a limited time

A refrigerator is a necessity in modern life. However, for those who want to save as much as possible, there is something that power consumption can not be stupid. In this broad world, there is something in place that looks around, there is something to replace ... ... so some people found just the right things.

However, it is not a technique that can be done anywhere, and it seems that various kinds of problems will arise in my life.

Image is from below.
Very economical refrigerator. At least for a while, it seems that you will not be bothered by cold beer on the kumquin. However, if I drink a beer, I do not think I can buy it ....
Imgur: the simple image sharer kOLwE.jpg


Is it like this until the snow melting?