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An Encyclopedia on Refrigerant Gas Knowledge

  • Q Introduction of Refrigerant Gas R22

    A Introduction of R22 gas

    R22 is a member of the Freon family and belongs to the category of hydrochlorofluorocarbons. As the most widely used medium and low temperature refrigerant today, refrigerant R-22 is widely used in reciprocating compressors as a refrigerant in industrial, commercial, and household air conditioning systems.
    It can also be used as aerosol spray for pesticides and spray paint, and it can also be used to produce fire extinguishing agent 1211; it is the basic raw material for the production of various fluorine-containing polymer compounds.

    Physical Properties
    Molecular Formula  CHCLF2 
    Molecular Weight 86.47
    Boiling Point  101.3KPa(° C) -40.80 
    Freezing Point  101.3KPa (° C) -160.00 
    Density 30° C(kg/m3) 1174.2
    Critical Temperature (° C)  96.2
    Critical Pressure (MPa) 4.99
    ODP 0.034
    GWP  1700

    The main purpose
     
    As the most widely used medium and low temperature refrigerant today, R-22 is mainly used in household air conditioners, commercial air conditioners, central air conditioners, mobile air conditioners, heat pump water heaters, dehumidifiers, refrigerated dryers, cold storage, food freezing equipment, marine refrigeration equipment, Industrial refrigeration, commercial refrigeration, refrigeration condensing units, supermarket display cabinets and other refrigeration equipment.

    Difluoromonochloromethane can also be used as a raw material for the production of polytetrafluoroethylene resin, an intermediate for fire extinguishing agent 1121, and as a physical foaming agent for polymers (plastics).
     
    Used in reciprocating compressors, as refrigerants in industrial, commercial, and domestic air-conditioning systems; it can also be used as aerosol propellant for pesticides and spray paint, and it can also be used to produce fire extinguishing agent 1211; it is the production of various fluorine-containing polymers The basic raw material of the compound.
     
    R22 belongs to the HCFC refrigerant. According to the Montreal Protocol, it will be completely phased out before 2030.
    The main environmentally friendly alternatives: R404A, R410A, R290, R23, R407C, R411A, R417A, R1270.

    Major international brands: DuPont, Honeywell, Arkema, Frioflor etc. However, because developed countries have already phased out R22 ahead of schedule, the production of this product is no longer allowed in their own countries, so the so-called imported R22 sold on the market is actually domestic OEM production.

    It is generally used in air conditioners or a two-machine cascaded first stage, as the high-temperature end refrigerant, which has greater refrigeration strength than general refrigerants.

    Quality Index
    Purity more than 99.93%
    Water content  ≤0.001% 
    Acidity ≤0.00001% 
    Evaporation residue  ≤0.01% 
    Appearance  Colorless and clear 
    Odor  Odorless 

    Refrigerant R22 packaging
     
    Disposable steel bottle packaging:
    1. 13.6kg/bottle, 22.7kg/bottle;
    2. reusable steel bottle packaging (recycling and packaging steel bottles): 400kg/bottle, 800kg/bottle.

    Refrigerant R22 storage and transportation
    Refrigerant R22 cylinders are pressurized containers. They should be stored away from fire, heat, and direct sunlight. They are usually stored in a cool, dry and ventilated warehouse; they should be loaded and unloaded with care to prevent damage to the cylinders, valves and other accessories. 
     
    What refrigeration oil matches refrigerant R22?
    The refrigerating oils usually used with refrigerant R22 are: Suniso 3GS, 4GS, 5GS, KunLun 3GS, 4GS, 5GS, ICEMATIC SW220, CP-4214-320, LUNARIA KT15, 22, 32, 46, 56, Capella WF68, etc.; What kind of refrigerating oil is finally used in different equipment and different application places should follow the recommendations of the refrigeration compressor and refrigeration (air-conditioning) equipment manufacturers, or determine the use of the same design and technical requirements according to the specific conditions of the refrigeration compressor and refrigeration equipment. 
  • Q R22 Refrigerant Temperature and Relative Pressure

    A
    R22 Refrigerant Temperature and Relative Pressure
    Temp. Pressure
    kpa
    Temp. Pressure
    kpa
    Temp. Pressure
    kpa
    Temp. Pressure
    kpa
    Temp. Pressure
    kpa
    -41 100 -17 274 7 622 31 1224 55 2176
    -40 105 -16 285 8 642 32 1256 56 2230
    -39 110 -15 296 9 661 33 1289 57 2274
    -38 115 -14 307 10 682 34 1322 58 2326
    -37 120 -13 318 11 703 35 1356 59 2377
    -36 126 -12 330 12 724 36 1390 60 2429
    -35 132 -11 342 13 745 37 1426 61 2482
    -34 138 -10 354 14 768 38 1461 62 2535
    -33 144 -9 367 15 790 39 1498 63 2590
    -32 150 -8 380 16 813 40 1535 64 2646
    -31 157 -7 394 17 837 41 1573 65 2702
    -30 163 -6 407 18 861 42 1611

    -29 170 -5 421 19 886 43 1650

    -28 178 -4 436 20 911 44 1690

    -27 185 -3 451 21 937 45 1731

    -26 193 -2 466 22 963 46 1771

    -25 201 -1 482 23 990 47 1814

    -24 209 0 499 24 1017 48 1856

    -23 218 1 515 25 1045 49 1900

    -22 226 2 532 26 1073 50 1944

    -21 236 3 549 27 1102 51 1989

    -20 245 4 567 28 1132 52 2034

    -19 254 5 585 29 1162 53 2081

    -18 264 6 603 30 1193 54 2129

    Temperature Unit: centigrade
    Remark: 1KPa≈0.01kg/cm2=0.001MPa,1kg/cm2 ≈98.0665KPa≈0.1MPa

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