Evaporative Cooling Without Electricity

Simple evaporative cooling devices such as evaporative cooling chambers eccs and clay pot coolers or pot in pot refrigerators are simple and inexpensive ways to keep vegetables fresh without the use of electricity.

Evaporative cooling without electricity.

Evaporative cooling is limited by the current wet bulb temperature. Methods of alternative refrigeration passive cooling. A cheap pvc shelf unit from you local hardware store works well. If you have something that is very cold like space and you can dissipate heat into it then you can do cooling without any electricity or work.

A wet bulb temperature is an indication of the amount of water vapor relative humidity in the air. For this reason the amount of heat flow off the earth that goes to the universe is enormous. Several hot and dry regions throughout the world could potentially benefit from evaporative cooling including north africa the sahel region of africa the horn of africa southern africa the middle east arid regions of south asia and australia. The system cools water flowing through pipes connected to an air conditioning system without requiring electricity by radiating excess heat from water into cold space.

No matter how much liquid evaporates or how fast it evaporates the minimum temperature that can be reached by direct evaporation is the wet bulb temperature. The specialized optical surfaces they developed are a major step toward applying this. Here are three methods of alternative refrigeration you can use without electricity.