Related Resources: thermodynamics

R-134a Thermodynamic Properties Table

Thermodynamics
Heat Transfer

R-134a Thermodynamic Properties Tables for Temperatures -70 °C to 101.2 °C

Where:

v = Specific volume
u = Specific internal energy
h = Specific enthalpy
s = Specific entropy

Temp. ( °C)	Press. (kPa)	Specific Volume, m3/ kg)			Internal Energy, kJ/kg
		Sat. Liquid vf	Evap. v fg	Sat. Vapor vg	Sat. Liquid uf	Evap. ufg	Sat. Vapor ug
− 70	8.3	0.000675	1.97207	1.97274	119.46	218.74	338.20
− 65	11.7	0.000679	1.42915	1.42983	123.18	217.76	340.94
− 60	16.3	0.000684	1.05199	1.05268	127.52	216.19	343.71
− 55	22.2	0.000689	0.78609	0.78678	132.36	214.14	346.50
− 50	29.9	0.000695	0.59587	0.59657	137.60	211.71	349.31
− 45	39.6	0.000701	0.45783	0.45853	143.15	208.99	352.15
− 40	51.8	0.000708	0.35625	0.35696	148.95	206.05	355.00
− 35	66.8	0.000715	0.28051	0.28122	154.93	202.93	357.86
− 30	85.1	0.000722	0.22330	0.22402	161.06	199.67	360.73
− 26.3	101.3	0.000728	0.18947	0.19020	165.73	197.16	362.89
− 25	107.2	0.000730	0.17957	0.18030	167.30	196.31	363.61
− 20	133.7	0.000738	0.14576	0.14649	173.65	192.85	366.50
− 15	165.0	0.000746	0.11932	0.12007	180.07	189.32	369.39
− 10	201.7	0.000755	0.09845	0.09921	186.57	185.70	372.27
− 5	244.5	0.000764	0.08181	0.08257	193.14	182.01	375.15
0	294.0	0.000773	0.06842	0.06919	199.77	178.24	378.01
5	350.9	0.000783	0.05755	0.05833	206.48	174.38	380.85
10	415.8	0.000794	0.04866	0.04945	213.25	170.42	383.67
15	489.5	0.000805	0.04133	0.04213	220.10	166.35	386.45
20	572.8	0.000817	0.03524	0.03606	227.03	162.16	389.19
25	666.3	0.000829	0.03015	0.03098	234.04	157.83	391.87
30	771.0	0.000843	0.02587	0.02671	241.14	153.34	394.48
35	887.6	0.000857	0.02224	0.02310	248.34	148.68	397.02
40	1017.0	0.000873	0.01915	0.02002	255.65	143.81	399.46
45	1160.2	0.000890	0.01650	0.01739	263.08	138.71	401.79
50	1318.1	0.000908	0.01422	0.01512	270.63	133.35	403.98
55	1491.6	0.000928	0.01224	0.01316	278.33	127.68	406.01
60	1681.8	0.000951	0.01051	0.01146	286.19	121.66	407.85
65	1889.9	0.000976	0.00899	0.00997	294.24	115.22	409.46
70	2117.0	0.001005	0.00765	0.00866	302.51	108.27	410.78
75	2364.4	0.001038	0.00645	0.00749	311.06	100.68	411.74
80	2633.6	0.001078	0.00537	0.00645	319.96	92.26	412.22
85	2926.2	0.001128	0.00437	0.00550	329.35	82.67	412.01
90	3244.5	0.001195	0.00341	0.00461	339.51	71.24	410.75
95	3591.5	0.001297	0.00243	0.00373	351.17	56.25	407.42
100	3973.2	0.001557	0.00108	0.00264	368.55	28.19	396.74
101.2	4064.0	0.001969	0	0.00197	382.97	0	382.97

Temperature Conversions

• °C to °F or Celsius to Fahrenheit Calculator °F = °C x 5 / 9 + 32
• °F to °C or Fahrenheit to Celsius Calculator °C = (°F - 32 ) x 5 / 9

Pressure Conversions

• kPa to psi, 0.145038 lbs/in² = 1kPa / 6.89479 (kPa / psi) or Divide kPa by 6.89479
• psi to kPa, 6.89476 kPa = 1 psi (multiply psi by 6.89476)

Volume Conversions

• m³/ kg to in³/lbs, 27679.9 in³/lbs = 1 m³/ kg, ( multiply m³/ kg by 27679.9 to get in³/lbs )
• in³/lbs to m³/ kg, 3.6127 x 10^-5 m³/ kg = 1 in³/lbs ( divide in³/lbs by 3.6127 x 10^-5 )

Energy Conversions

• BTU/lbs to kJ/kg, 1 kJ/k = 0.429923 BTU/lbs ( multiple BTU/lbs by 0.429923 )
• kJ / kg to Btu / lbs, 1 BTU/lbs = 2.326 kJ/kg ( divide kJ/kg by 2.326 )