Propane Camping Stoves Dedicated for the camping lovers trying to find that perfect camping stoves

The basic principle of how these refrigerators cool their interior is the same as in conventional compression refrigerators. Both use refrigerant liquids that boil at low temperatures to achieve cooling. A large amount of energy is needed to turn the liquid into gas, and this is absorbed from the surroundings, cooling them. The difference is in how the gas is turned back to liquid to use it again for more cooling. A conventional electric refrigerator uses a pump to compress the gas back to liquid; a gas absorption refrigerator uses another liquid to absorb the gas and then has extra stages to separate the pure refrigerant liquid out again for re-use, this extra part being where the heat source is involved.

Variations exist, but the usual pattern of gas absorption refrigerator uses ammonia as the refrigerant and water as the absorber, with hydrogen gas included to adjust the pressure in the system. The exact mixture and pressure has to be correct to give proper cooling at normal temperatures.

I don’t know the exacy model of the camping gas ref that you refer to. But when I was in college, we have this small topic in refrigeration called jet refrigration. The principle is lowering the pressure will lower terperature. Hot and high pressure steam, usually by products from industrial use, is expanded lowering its pressure and consequently temperature. This expansion is made inside a chamber with very low pressure and also contain water (chilled). The low pressure steam has a high velocity and is made to carry with it some of the vapor evaporating from the chilled water.

The effect of low pressure and evaporation is lower temperature.