Precautions for New Refrigerant (R410A) Mini UM S/M194 Precautions for New Refrigerant (R410A)1. Precautions for New Refrigerant (R410A)1.1 Outline1.1.1 About Refrigerant R410A Characteristics of new refrigerant, R410A1. PerformanceAlmost the same performance as R22 and R407C2. PressureWorking pressure is approx. 1.4 times more than R22 and R407C.3. Refrigerant compositionFew problems in composition control, since it is a Quasi-azeotropic mixture refrigerant.1. Non-azeotropic mixture refrigerant: mixture of two or more refrigerants having differentboiling points.2. Quasi-azeotropic mixture refrigerant: mixture of two or more refrigerants having similarboiling points.3. The design pressure is different at each product. Please refer to the installation manual foreach product.(Reference) 1 MPa 10.19716 kgf / cm2HFC units (Units using new refrigerants) HCFC unitsRefrigerant name R407C R410A R22ComposingsubstancesNon-azeotropic mixtureof HFC32, HFC125 andHFC134a (*1)Quasi-azeotropic mixtureof HFC32 and JFC125(*1)Single-componentrefrigerantDesign pressure 3.2 MPa (gauge pressure)= 32.6 kgf/cm24.0 MPa (gauge pressure)= 40.8 kgf/cm22.75MPa (gauge pressure)= 28.0 kgf/cm2Refrigerant oil Synthetic oil (Ether) Mineral oil (Suniso)Ozone destructionfactor (ODP) 0 0 0.05Combustibility None None NoneToxicity None None NonePressure-Enthalpy curves of HFC-32/125 (50/50wt%)
