Refrigerant R134a - Properties

Thermodynamic properties of refrigerant R-134a.

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.

R-134a Properties - Imperial Units

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Refrigerant R134a - Properties - Imperial Units
Temperature (^oF)	Pressure (psia)	Pressure (psig) (inches mercury below one atmosphere)*	Density Liquid (lb./cu.ft.)	Specific Volume Vapor (cu.ft./lb.)	Heat Content - Enthalpy Liquid (Btu/lb.)	Heat Content - Enthalpy Vapor (Btu/lb.)
-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	23.7710	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

R-134a Properites - SI Units

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Refrigerant R134a - Properties - SI Units
Temperature (^oC)	Absolute Pressure (bar)	Density Liquid (kg/m³)	Density Vapor (kg/m³)	Enthalpy Liquid (kJ/kg)	Enthalpy Vapor (kJ/kg)	Entropy Liquid (kJ/(kgK))	Entropy Vapor (kJ/(kgK))
-60	0.15935	1472.0	0.9291	24.491	261.491	0.68772	1.8014
-50	0.29477	1444.9	1.6526	36.302	267.779	0.74358	1.7809
-40	0.51225	1417.0	2.773	48.631	274.068	0.79756	1.76448
-30	0.84379	1388.2	4.4307	61.130	280.324	0.84995	1.75142
-20	1.32719	1358.4	6.7903	73.833	286.513	0.901	1.74113
-10	2.00575	1327.4	10.047	86.777	292.598	0.95095	1.73309
0	2.,92769	1295.1	14.433	1000.0	298.536	1	1.72684
10	4.14571	1261.2	20.226	113.540	304.276	1.04834	1.72196
20	5.71665	1225.5	27.773	127.437	309.756	1.09613	1.71806
30	7.70132	1187.5	37.517	141.736	314.892	1.14354	1.71473
40	10.1648	1146.7	50.055	156.491	319.575	1.19073	1.71152
50	13.1773	1102.2	66.234	171.778	323.652	1.23794	1.70792
60	16.8156	1052.9	87.346	187.715	326.896	1.28548	1.70325
70	21.1668	996.49	115.564	204.515	328.941	1.3339	1.6965
80	26.3336	928.78	155.130	222.616	329.095	1.38434	1.68585
90	32.4489	838.51	216.936	243.168	325.655	1.43978	1.66692
100	39.7254	649.71	367.064	273.641	309.037	1.5198	1.61466

1,1,1,2-Tetrafluoroethane - R-134a - is an inert gas used primarily as a high-temperature refrigerant for domestic refrigeration and automobile air conditioners.