R245fa Thermodynamic properties

Saturation tables by temperature and by pressure, superheated vapor table, p–h and T–s diagrams and constants of R245fa (C₃F₅H₃), computed with CoolProp. Any other state of R245fa, from any two properties, in the State Explorer or the Worksheet.

Calculate a state of R245fa Open it in the Worksheet

Constants

Formula: C₃F₅H₃
Also known as: R245FA
CAS: 460-73-1
Molar mass: 134.05 g/mol
Normal boiling point (1 atm): 15.048 °C (288.2 K)
Critical temperature: 153.86 °C (427.01 K)
Critical pressure: 3.651 MPa
Critical density: 519.29 kg/m³
Triple point: -102.1 °C, 0.013757 kPa
Acentric factor: 0.3776
Valid up to: 166.85 °C, 200 MPa

Saturation table

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

Saturated R245fa, 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	0.018394	0.00061022	583.84	82.289	253.53	335.82	0.46525	1.9295
-80	0.20229	0.00062742	59.201	105.04	243.46	348.5	0.58956	1.85
-60	1.3145	0.00064593	10.041	128.15	233.76	361.91	0.7034	1.8001
-40	5.8427	0.00066601	2.4619	151.73	224.26	375.98	0.8091	1.771
-20	19.612	0.00068797	0.79015	175.88	214.68	390.57	0.90845	1.7565
0	53.273	0.0007123	0.30947	200.74	204.72	405.46	1.0029	1.7523
20	123.06	0.00073969	0.14061	226.42	194.04	420.47	1.0934	1.7553
40	250.65	0.00077119	0.071366	253.04	182.31	435.36	1.1809	1.7631
60	462.46	0.00080846	0.039299	280.75	169.12	449.87	1.2661	1.7738
80	789.01	0.00085435	0.022912	309.74	153.87	463.61	1.3498	1.7855
100	1264.9	0.00091434	0.013815	340.36	135.59	475.95	1.433	1.7963
120	1930.4	0.0010014	0.0083604	373.31	112.25	485.56	1.5173	1.8028
140	2837	0.0011613	0.0047568	410.67	78.013	488.68	1.6075	1.7963

Saturation table by pressure

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

Saturated R245fa, 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	-63.231	0.00064284	13.003	124.39	235.31	359.69	0.68562	1.8066
2	-54.801	0.00065098	6.7559	134.23	231.28	365.51	0.73158	1.7908
3	-49.476	0.00065628	4.6097	140.49	228.75	369.24	0.75991	1.7826
5	-42.301	0.00066361	2.8502	148.99	225.35	374.34	0.79729	1.7735
10	-31.614	0.00067496	1.4862	161.78	220.27	382.05	0.85144	1.7634
20	-19.641	0.00068839	0.77575	176.32	214.51	390.83	0.91018	1.7563
30	-11.939	0.00069746	0.53042	185.81	210.73	396.54	0.94702	1.7538
50	-1.383	0.00071053	0.32846	199	205.43	404.43	0.99646	1.7523
100	14.72	0.00073211	0.17108	219.56	196.95	416.51	1.0698	1.754
200	33.311	0.00076011	0.088609	244.03	186.38	430.4	1.1519	1.7601
300	45.576	0.0007809	0.060003	260.65	178.8	439.45	1.2049	1.7659
500	62.763	0.0008142	0.036372	284.67	167.15	451.82	1.2778	1.7754
1000	89.749	0.00088131	0.017857	324.43	145.43	469.86	1.3904	1.7911
2000	121.77	0.0010114	0.0079859	376.38	109.81	486.19	1.5249	1.803
3000	143.03	0.0012024	0.0042922	417.15	70.729	487.87	1.6227	1.7926

Diagrams

p–h diagram of R245fa, with isotherms

T–s diagram of R245fa, with isobars

Superheated vapor table

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

Superheated R245fa at 20 kPa (Tsat -19.641 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.77575	375.32	390.83	1.7563
0	0.83873	389.81	406.58	1.8162
20	0.90232	405.3	423.35	1.8754
40	0.96553	421.52	440.83	1.9331
60	1.0285	438.46	459.02	1.9894
80	1.0912	456.08	477.91	2.0444
100	1.1538	474.4	497.47	2.0983
120	1.2163	493.38	517.71	2.1511
140	1.2787	513.02	538.59	2.2029
160	1.341	533.31	560.13	2.2538

Superheated R245fa at 50 kPa (Tsat -1.383 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.32846	388	404.43	1.7523
20	0.35674	404.7	422.54	1.8165
40	0.38277	421.04	440.17	1.8747
60	0.40851	438.05	458.48	1.9313
80	0.43404	455.75	477.45	1.9866
100	0.45942	474.11	497.08	2.0407
120	0.48469	493.14	517.37	2.0936
140	0.50988	512.81	538.3	2.1456
160	0.53501	533.12	559.87	2.1965

Superheated R245fa at 100 kPa (Tsat 14.72 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.17108	399.4	416.51	1.754
20	0.17476	403.66	421.14	1.7699
40	0.18844	420.2	439.04	1.829
60	0.20181	437.37	457.55	1.8863
80	0.21496	455.18	476.68	1.942
100	0.22795	473.63	496.43	1.9964
120	0.24082	492.72	516.81	2.0496
140	0.25361	512.45	537.81	2.1017
160	0.26634	532.8	559.44	2.1528

Superheated R245fa at 200 kPa (Tsat 33.311 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.088609	412.68	430.4	1.7601
40	0.09111	418.43	436.65	1.7802
60	0.098357	435.94	455.61	1.8389
80	0.10535	454.01	475.08	1.8957
100	0.11217	472.65	495.08	1.9508
120	0.11886	491.88	515.65	2.0045
140	0.12546	511.72	536.81	2.0569
160	0.13199	532.16	558.56	2.1083

Superheated R245fa at 500 kPa (Tsat 62.763 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.036372	433.64	451.82	1.7754
80	0.039342	450.09	469.76	1.8274
100	0.042548	469.44	490.72	1.8852
120	0.045584	489.19	511.99	1.9407
140	0.048503	509.42	533.67	1.9945
160	0.05134	530.16	555.83	2.0468

Superheated R245fa at 1 MPa (Tsat 89.749 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.017857	452	469.86	1.7911
100	0.018987	462.93	481.92	1.8239
120	0.020955	484.01	504.96	1.884
140	0.022729	505.13	527.86	1.9408
160	0.024381	526.51	550.89	1.9953

Superheated R245fa at 2 MPa (Tsat 121.77 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.0079859	470.22	486.19	1.803
140	0.0094677	493.76	512.69	1.8686
160	0.010704	517.61	539.02	1.9309

Enthalpy and entropy are measured from R245fa's own reference state (CoolProp's default). The textbooks' refrigerant tables use ASHRAE's: in the Worksheet, write reference ASHRAE.