Refrigerant R134a Properties

Thermodynamic properties refrigerant R-134a

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  • 1,1,1,2-Tetrafluoroethane, R-134a
  • Genetron 134a
  • Suva 134a
  • HFC-134a

is a haloalkane refrigerant with thermodynamic properties similar to R-12 (dichlorodifluoromethane), but with less ozone depletion potential. R-134a has the formula CH2FCF3.

Temperature  Pressure Density Specific Volume Enthalpy (Btu/lb.) 
(oF) (psia) (psig)
(*inches mercury below one atmosphere)		 (lb./cu.ft.) (cu.ft./lb.) Liquid Vapor
-150 0.07107 29.776* 102.34 457.07 -32.781 80.212
-125 0.28333 29.344* 99.64 123.44 -25.383 83.716
-100 0.89915 28.090* 96.89 41.52 -17.939 87.245
-75 2.3866 25.062* 94.09 16.56 -10.472 90.760
-50 5.4966 18.730* 91.22 7.56 -2.995 94.248
-25 11.2964 6.9214* 88.28 3.83 4.503 97.721
-15 14.6686 0.0555* 87.08 2.99 7.518 99.109
-10 16.6293 1.9334 86.47 2.66 9.030 99.804
-5 18.7906 4.0947 85.86 2.37 10.546 100.499
0 21.1665 6.4706 85.25 2.12 12.067 101.195
5 237710 9.0751 84.63 1.90 13.593 101.891
10 26.619 11.923 84.01 1.70 15.125 102.587
25 36.773 22.078 82.11 1.25 19.763 104.677
50 60.032 45.335 78.84 0.781 27.666 108.149
75 93.080 78.384 75.39 0.507 35.851 111.553
86 111.321 96.626 73.80 0.424 39.560 113.004
100 138.28 123.58 71.70 0.340 44.393 114.782
125 198.27 183.57 67.68 0.232 53.385 117.660
150 276.12 261.42 63.13 0.159 62.989 119.879
175 375.69 360.99 57.60 0.107 73.581 120.788
200 502.54 487.85 49.44 0.065 86.528 118.155

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  • Air Conditioning - Air Conditioning systems - heating, cooling and dehumidification of indoor air for thermal comfort

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