Three Liabilities Addressed: Refrigeration, Sanitation, and Fuel, by James D.
One of the biggest problems for the survivalist is the lack of refrigeration, since the cost in energy is just prohibitive, especially in the multi-generational scenario. Normal refrigeration uses an electrically driven compressor to compress a refrigerant (a liquid that boils at room temperature) turning gas to a liquid. For the survivalist, ammonia is the refrigerant of choice, and at the proper pressure (since it is normally a gas), it will act as a refrigerant, although other chemicals may be added to improve performance, including water and salts. When the liquid boils it will cool the surface that the refrigerant …