Azeotropic refrigerant

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  • A blend that contains two or more refrigerants whose equilibrium vapor-phase and liquid-phase compositions are the same at a given pressure. The temperature of an azeotropic refrigerant remains constant as it evaporates or condenses at constant pressure (compare to zeotropic refrigerant).[1][2][3][4][5]


  1. ASHRAE Technical Committee (TC) 1.6, Terminology
  2. Standard 41.9-2011
  3. Standard 23-2005
  4. Standard 23.1-2010
  5. Guideline 6-2008
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