Refrigerant
In space and astronautical engineering, a refrigerant is a substance used in a cooling system to transfer heat from one location to another. Refrigerants are commonly used in spacecraft thermal control systems to regulate the temperature of sensitive equipment and electronics. They are also used in life support systems to maintain a comfortable environment for astronauts. The selection of a refrigerant is based on its thermodynamic properties, such as its boiling point, heat capacity, and thermal conductivity, as well as its compatibility with other materials in the system. Common refrigerants used in space applications include ammonia, carbon dioxide, and Freon.
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