Refrigeration: Types and Applications
Refrigerationprocesses are very common and have significantly improved the quality of life of many people in a variety of ways.
Vapor-compression refrigeration systemsare used to preserve food, to provide air-conditioning, and in a variety of industrial processes.
Vapor-compression heat pumpsare used to heat homes and businesses. In all but the coldest climates, they are significantly more efficient than resistance heating units.
The most common application of a
gas refrigeration systemis the air-conditioning systems used in passenger aircraft.
Thermoelectric refrigeration systemsuse the
Peltier Effectto absorb heat at the junction between two wires made of different metals. These devices are lightweight, but not very efficient.
Ammonia absorption refrigeration systemscan be built with no moving parts and can require no work input. They operate with a heat input only.
Ammonia absorption refrigeratorsare used industrially and in recreational vehicles.
In this chapter, we will will consider practical refrigeration and heat pump cycles and the equipment and working fluids used to carry out these cycles.
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