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  • Q Introduction of Refrigerant Gas R404a

    A
    Basic Introduction of Refrigerant Gas R404a
     
    R404A is a mixture of HFC125, HFC-134a and HFC-143. The ratio is R404A = 44% R125 + 4% R134A + 52% 143A. It is a colorless gas at room temperature, and a colorless and transparent liquid under its own pressure. R-404A is suitable for new commercial refrigeration equipment, transportation refrigeration equipment or renewal equipment at medium and low temperatures. Closest to R-502, this refrigerant is suitable for all environments where R-502 can operate normally.

    Product name: R404A (R-404A)

    Product Category: HFC

    Chemical composition: pentafluoroethane/trifluoroethane/tetrafluoroethane mixture

    Refrigerant R404A, alias R404A, product names include SUVA HP62, SUVA 404A, Genetron 404A, etc. As R404A belongs to the HFC-type non-azeotropic environmentally friendly refrigerant (completely does not contain ozone-depleting CFC, HCFC), it is currently recognized and recommended by most countries in the world as the mainstream low-temperature environmentally friendly refrigerant. Re-added during installation and maintenance. It complies with the standards of the US environmental protection organization EPA, SNAP and UL, and complies with the A1 safety level category of the American Society of Heating, Refrigeration and Air-Conditioning Engineers (ASHRAE) (this is the highest level and harmless to humans).


    Physical Properties

    Physical Properties
    Molecular Formula CHF2CF3/CF3CH2F/CH3CF3   
    Molecular Weight 97.6
    Boiling Point  101.3KPa(° C) -46.60
    Freezing Point
    Density 30°C(kg/m3) 1017.2
    Critical Temperature (°C)  72.1
    Critical Pressure (MPa) 3.74
    ODP 0
    GWP  3800

    Quality Index

    Quality Index
    Purity  ≥99.90% 
    Water content  ≤0.001% 
    Acidity ≤0.00001% 
    Evaporation residue  ≤0.01% 
    Chloride content N/M
    Appearance  Colorless and clear 
    Odor  Odorless 

    Application of R404a Refrigerant

    As a widely used medium and low temperature refrigerant today, R404A is often used in cold storage, food freezing equipment, marine refrigeration equipment, industrial low temperature refrigeration, commercial low temperature refrigeration, transportation refrigeration equipment (refrigerated trucks, etc.), refrigerated condensing units, supermarket display cabinets Wait for refrigeration equipment.

    Refrigerant R404A is the most common industry standard refrigerant (usually low temperature refrigeration system) to replace Freon R22 and R502 in newly installed refrigeration equipment. R404A is the closest to the operation of R-502, and it is suitable for all R-502 that can operate normally. Environment, R404A is recognized and used by most refrigeration equipment manufacturers in the world. However, because R404A is different from R502 and R22 in physical and chemical properties, theoretical cycle performance, and compressor oil, the after-sales maintenance of refrigeration equipment initially installed as R502 and R22 refrigerants, if you need to add or replace refrigerants, still Only R502 and R22 can be added, usually R404A cannot be used to replace R502 and R22 directly (that is, exchange-type replacement is usually not possible).

  • Q R404a Refrigerant Temperature and Relative Pressure

    A
    R404a Refrigerant Temperature and Relative Pressure
    Temp. Pressure
    kpa
    Temp. Pressure
    kpa
    Temp. Pressure
    kpa
    Temp. Pressure
    kpa
    Temp. Pressure
    kpa
    -60 0.05 -31 0.2 -2 0.569 27 1.31 56 2.63
    -59 0.053 -30 0.208 -1 0.588 28 1.36 57 2.68
    -58 0.056 -29 0.217 0 0.608 29 1.39 58 2.74
    -57 0.059 -28 0.226 1 0.628 30 1.43 59 2.81
    -56 0.062 -27 0.235 2 0.645 31 1.46 60 2.86
    -55 0.066 -26 0.243 3 0.665 32 1.5 61 2.93
    -54 0.069 -25 0.253 4 0.687 33 1.53 62 2.98
    -53 0.072 -24 0.264 5 0.71 34 1.57 63 3.05
    -52 0.076 -23 0.275 6 0.73 35 1.61 64 3.13
    -51 0.08 -22 0.284 7 0.752 36 1.66 65 3.19
    -50 0.084 -21 0.296 8 0.777 37 1.69 66 3.26
    -49 0.089 -20 0.306 9 0.8 38 1.73 67 3.31
    -48 0.093 -19 0.318 10 0.823 39 1.78 68 3.4
    -47 0.098 -18 0.33 11 0.85 40 1.82 69 3.45
    -46 0.103 -17 0.343 12 0.872 41 1.87 70 3.54
    -45 0.108 -16 0.354 13 0.9 42 1.91 71 3.6
    -44 0.112 -15 0.368 14 0.923 43 1.96 72 3.69
    -43 0.118 -14 0.381 15 0.95 44 2.03 73 3.75
    -42 0.124 -13 0.394 16 0.978 45 2.06 74 3.81
    -41 0.129 -12 0.407 17 1.01 46 2.09 75 3.87
    -40 0.136 -11 0.424 18 1.04 47 2.15

    -39 0.141 -10 0.438 19 1.06 48 2.2

    -38 0.149 -9 0.453 20 1.09 49 2.25

    -37 0.155 -8 0.468 21 1.12 50 2.29


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

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