R152a Thermodynamic properties

Saturation tables by temperature and by pressure, superheated vapor table, p–h and T–s diagrams and constants of R152a (C₂F₂H₄), computed with CoolProp. Any other state of R152a, from any two properties, in the State Explorer or the Worksheet.

Calculate a state of R152a Open it in the Worksheet

Constants

Formula: C₂F₂H₄
Also known as: R152a
CAS: 75-37-6
Molar mass: 66.051 g/mol
Normal boiling point (1 atm): -24.022 °C (249.13 K)
Critical temperature: 113.26 °C (386.41 K)
Critical pressure: 4.5168 MPa
Critical density: 368 kg/m³
Triple point: -118.59 °C, 0.064139 kPa
Acentric factor: 0.27522
Valid up to: 226.85 °C, 58 MPa

Saturation table

By temperature: saturated liquid (f) and saturated vapor (g).

Saturated R152a, by temperature
T °C	Psat kPa	vf m³/kg	vg m³/kg	hf kJ/kg	hfg kJ/kg	hg kJ/kg	sf kJ/(kg·K)	sg kJ/(kg·K)
-100	0.57884	0.00086305	37.617	41.749	390.84	432.59	0.28267	2.5399
-80	3.5908	0.00089179	6.7438	72.226	375.25	447.48	0.44922	2.392
-60	15.002	0.00092319	1.7682	103.02	359.72	462.74	0.60085	2.2885
-40	47.211	0.000958	0.60583	134.4	343.62	478.02	0.7414	2.2152
-20	120.68	0.00099729	0.25131	166.64	326.3	492.94	0.87374	2.1627
0	263.99	0.0010426	0.11963	200	307.11	507.11	1	2.1243
20	512.91	0.0010965	0.062855	234.77	285.32	520.09	1.1219	2.0952
40	909.27	0.0011632	0.035361	271.35	259.93	531.28	1.2411	2.0711
60	1500.7	0.001251	0.020737	310.38	229.34	539.72	1.3596	2.048
80	2342.4	0.001379	0.012285	353.15	190.28	543.43	1.481	2.0198
100	3505	0.0016167	0.0068609	403.59	132.69	536.28	1.6151	1.9707

Saturation table by pressure

By pressure: saturated liquid (f) and saturated vapor (g).

Saturated R152a, by pressure
P kPa	Tsat °C	vf m³/kg	vg m³/kg	hf kJ/kg	hfg kJ/kg	hg kJ/kg	sf kJ/(kg·K)	sg kJ/(kg·K)
1	-94.531	0.00087068	22.45	50.06	386.55	436.61	0.32992	2.494
2	-86.984	0.00088148	11.687	61.557	380.67	442.22	0.39296	2.4377
3	-82.21	0.00088849	7.9835	68.847	376.96	445.81	0.43162	2.4059
5	-75.768	0.00089819	4.9437	78.709	371.98	450.69	0.48241	2.367
10	-66.156	0.0009132	2.5835	93.493	364.53	458.02	0.55552	2.3166
20	-55.367	0.00093092	1.3516	110.23	356.06	466.29	0.63427	2.2692
30	-48.417	0.00094288	0.92547	121.1	350.5	471.61	0.68339	2.243
50	-38.882	0.00096007	0.57418	136.18	342.69	478.86	0.74899	2.2118
100	-24.319	0.00098836	0.29991	159.59	330.18	489.77	0.84574	2.1727
200	-7.492	0.0010248	0.15588	187.35	314.56	501.92	0.95331	2.1374
300	3.613	0.0010516	0.10583	206.17	303.39	509.56	1.0223	2.1185
500	19.173	0.0010941	0.06445	233.3	286.29	519.59	1.1169	2.0963
1000	43.606	0.0011772	0.032044	278.18	254.87	533.05	1.2624	2.067
2000	72.649	0.001325	0.014915	336.85	205.98	542.83	1.4357	2.0314
3000	92.073	0.0014982	0.0087876	382.09	159.24	541.33	1.559	1.995

Diagrams

p–h diagram of R152a, with isotherms

T–s diagram of R152a, with isobars

Superheated vapor table

At each pressure, from its saturated vapor (Sat.) to higher temperatures.

Superheated R152a at 50 kPa (Tsat -38.882 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.57418	450.15	478.86	2.2118
-25	0.61158	461.16	491.74	2.2652
0	0.67766	481.88	515.76	2.3574
25	0.74273	503.87	541	2.4458
50	0.80718	527.21	567.56	2.5313
75	0.87124	551.93	595.49	2.6145
100	0.93503	578.04	624.79	2.6958
125	0.99865	605.54	655.47	2.7753
150	1.0621	634.41	687.52	2.8534
175	1.1255	664.62	720.9	2.93
200	1.1889	696.12	755.57	3.0053
225	1.2521	728.87	791.48	3.0792

Superheated R152a at 100 kPa (Tsat -24.319 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.29991	459.78	489.77	2.1727
0	0.3337	480.47	513.84	2.2649
25	0.36736	502.8	539.54	2.3549
50	0.40037	526.37	566.41	2.4414
75	0.43297	551.25	594.55	2.5253
100	0.4653	577.48	624.01	2.607
125	0.49745	605.06	654.81	2.6869
150	0.52947	633.99	686.94	2.7651
175	0.5614	664.25	720.39	2.8419
200	0.59325	695.79	755.11	2.9173
225	0.62505	728.57	791.07	2.9913

Superheated R152a at 200 kPa (Tsat -7.492 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.15588	470.74	501.92	2.1374
0	0.1615	477.52	509.82	2.1667
25	0.17956	500.61	536.52	2.2603
50	0.1969	524.66	564.04	2.3489
75	0.2138	549.87	592.63	2.4341
100	0.23042	576.33	622.42	2.5167
125	0.24684	604.09	653.46	2.5972
150	0.26314	633.15	685.77	2.6759
175	0.27933	663.5	719.37	2.753
200	0.29545	695.12	754.21	2.8286
225	0.31151	727.96	790.26	2.9029

Superheated R152a at 500 kPa (Tsat 19.173 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.06445	487.36	519.59	2.0963
25	0.066475	493.38	526.62	2.1201
50	0.074619	519.22	556.53	2.2164
75	0.082193	545.57	586.66	2.3062
100	0.089428	572.8	617.51	2.3918
125	0.096444	601.11	649.33	2.4743
150	0.10331	630.57	682.23	2.5544
175	0.11008	661.23	716.27	2.6326
200	0.11676	693.09	751.47	2.709
225	0.12339	726.12	787.82	2.7838

Superheated R152a at 1 MPa (Tsat 43.606 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.032044	501	533.05	2.067
50	0.033382	508.62	542	2.095
75	0.038096	537.64	575.73	2.1956
100	0.042311	566.5	608.81	2.2874
125	0.046245	595.9	642.14	2.3738
150	0.050002	626.13	676.13	2.4566
175	0.053637	657.36	711	2.5366
200	0.057188	689.65	746.84	2.6144
225	0.060676	723.02	783.69	2.6903

Superheated R152a at 2 MPa (Tsat 72.649 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.014915	513	542.83	2.0314
100	0.018437	551.68	588.55	2.1588
125	0.020994	584.32	626.31	2.2568
150	0.023269	616.6	663.13	2.3465
175	0.025379	649.22	699.98	2.431
200	0.027382	682.52	737.29	2.5121
225	0.02931	716.66	775.28	2.5903

Enthalpy and entropy are measured from R152a's own reference state (CoolProp's default). The textbooks' refrigerant tables use ASHRAE's: in the Worksheet, write reference ASHRAE.