Refrigerant

Refrigerant

Refrigerant (/rɪˈfrɪdʒərənt/) is a substance or mixture, usually a fluid, used in a heat pump and refrigeration cycle. Most of the time, it undergoes phase transitions from a liquid to a gas and back again.

Etymology

The term "refrigerant" comes from the Latin word "refrigerare", which means "to make cool".

Types of Refrigerants

There are several types of refrigerants used in various applications. Some of the most common ones include:

• Chlorofluorocarbons (CFCs)
• Hydrochlorofluorocarbons (HCFCs)
• Hydrofluorocarbons (HFCs)
• Ammonia
• Carbon Dioxide
• Water

Related Terms

• Heat Pump: A device that transfers heat energy from a source of heat to what is called a thermal reservoir.
• Refrigeration Cycle: A cooling cycle that removes unwanted heat from a selected object or space, cools it, and expels the heat elsewhere.
• Phase Transition: The transformation of a thermodynamic system from one phase or state of matter to another one by heat transfer.

See Also

• Air Conditioning
• Thermodynamics
• HVAC

External links

• Medical encyclopedia article on Refrigerant
• Wikipedia's article - Refrigerant

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