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| The Molecular Weight: | 102.0 | Boiling Point（1atm），℃: | -26.2 |
|---|---|---|---|
| Critical Temperature，℃: | 101.1 | Critical Pressure，kPa: | 4070 |
| High Light: | R410a refrigerant,r22 replacement refrigerants |
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R - 134 - a refrigerant (four fluorine ethane)
R - 134 - a refrigerant, alias everything, HFC134a, HFC - 134 - a, four fluorine ethane, name of commodity is SUVA 134 a, 134 a, KLEA Genetron 134 a, such as Chinese name four fluorine ethane, English name say - tetrafluoroethane, chemical name, say, four fluorine ethane, molecular formula CH2FCF3.Because of R - 134 - a belongs to the HFC class material (not the ODS Ozone - depleting Substances) - so completely does not destroy the Ozone layer, is currently the vast majority of countries in the world recognized and recommended to use environmental protection refrigerants, also is the current mainstream environmental protection refrigerants, widely used in refrigeration and air conditioning equipment to add in the process of die erste installation and maintenance.
R - 134 - a main purpose
R - 134 - a as the most widely used in low temperature environmental protection refrigerants, as a result of HFC - 134 - a good comprehensive performance, make it become a kind of very effective and safe substitute CFC - 12, mainly applied in the use of R - 12 (R12, Freon 12, F - 12, CFC - 12, Freon 12, dichlorodifluoromethane), most field of refrigerants, including: refrigerators, freezers, water dispensers, auto air conditioning, central air-conditioning, dehumidifier, cold storage, commercial refrigeration, ice water machine, ice cream machine, refrigeration condensing units, refrigeration equipment, at the same time also can be used in aerosol propellant, medical, aerosol, insecticides aerosol propellant polymer (plastic) physical foaming agent, and magnesium alloy shielding gas, etc.
Although everything refrigerant is replace freon R12 on new refrigeration equipment the most popular choice, but because everything with R12 physical and chemical performance, performance in theoretical cycle and compressor oil are different, so the refrigeration equipment of refrigerant R12 die erste installation for after-sale maintenance, if need to add or replace refrigerants, still can add R12, usually can not directly replace R12 with everything (that is usually not the type of replacement can be change).
R - 134 - a physical and chemical properties
| The name of the refrigerant | R-134a |
| The molecular weight | 102.0 |
| boiling point(1atm),℃ | -26.2 |
| Critical temperature,℃ | 101.1 |
| Critical pressure,kPa | 4070 |
| Saturated vapor pressure(25℃),kPa | 661.9 |
| Heat of vaporization/latent heat of evaporation(Under the boiling point,1atm),kJ/kg | 216 |
| Destruction of the ozone ozeme depletion potential(ODP) | 0 |
| Global warming ozeme depletion potential(GWP,100 yr) | 1300 |
| ASHRAER - 134 - a refrigerant packaging | A1(Non-toxic incombustible) |
HFC-134aStability testing data (with metal materials and frozen oil)
| Frozen oil | Mineral oil | Mineral oil |
UCON RO-W-6602(a) |
Mobil EAL Arctic 32(b) |
Castrol Icematic SW 100(b) |
| viscositycSt(40℃) | 30.7 | 125 | 134 | 29.4 | 108.8 |
| refrigerant | R12 | R12 | R134a | R134a | R134a |
| Evaluation: pure oil Oil/refrigerantcopper iron aluminum |
—— 4 2 3 2 |
—— 4 2 3 2 |
0 0 0 0 0 |
0 0 0 0 0 |
0 0 0 0 0 |
| Viscosity change % pure % with refrigerant |
ND ND |
ND ND |
<1 -12.7 |
-3.1 -36.2 |
4.3 -27.1 |
| Breakdown products analysis HFC-134a(ppm) fluoride(ppm) |
ND ND |
ND 420 |
<7 <0.7 |
<3 —— |
<0.3 <7 |
(a)——Polyethylene glycol refrigeration oil；(b)——Polyester frozen oil；ND——Not sure
Stability evaluation:0——The best；3——unqualified；5——coking
