R1234ze(E) Thermodynamic properties

Saturation tables by temperature and by pressure, superheated vapor table, p–h and T–s diagrams and constants of R1234ze(E) (C₃F₄H₂), computed with CoolProp. Any other state of R1234ze(E), from any two properties, in the State Explorer or the Worksheet.

Calculate a state of R1234ze(E)Open it in the Worksheet

Constants

Formula: C₃F₄H₂
Also known as: R1234ZE, R1234ZEE, R1234zeE, R1234ZE(E)
CAS: 29118-24-9
Molar mass: 114.04 g/mol
Normal boiling point (1 atm): -18.973 °C (254.18 K)
Critical temperature: 109.36 °C (382.51 K)
Critical pressure: 3.6349 MPa
Critical density: 489.21 kg/m³
Triple point: -104.53 °C, 0.21865 kPa
Acentric factor: 0.31312
Valid up to: 146.85 °C, 15 MPa

Saturation table

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

Saturated R1234ze(E), 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	0.36531	0.00066648	34.539	75.004	239.73	314.74	0.4326	1.8171
-80	2.502	0.00068933	5.6144	99.351	228.53	327.88	0.56566	1.7488
-60	11.166	0.00071396	1.3805	123.84	217.88	341.73	0.68628	1.7085
-40	36.747	0.000741	0.45337	148.67	207.28	355.94	0.7975	1.6865
-20	96.872	0.00077137	0.18282	173.99	196.21	370.21	0.90152	1.6766
0	216.55	0.00080637	0.085365	200	184.18	384.18	1	1.6743
20	427.34	0.00084799	0.044234	226.91	170.63	397.53	1.0944	1.6765
40	766.45	0.00089968	0.024609	255.01	154.8	409.81	1.1862	1.6805
60	1276.6	0.00096851	0.01427	284.79	135.48	420.27	1.2768	1.6835
80	2007.7	0.0010722	0.0083177	317.19	110.2	427.39	1.3691	1.6811
100	3026	0.0012866	0.0044443	355.6	70.359	425.96	1.4715	1.66

Saturation table by pressure

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

Saturated R1234ze(E), 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	-90.193	0.00067749	13.323	86.937	234.14	321.08	0.49963	1.7794
2	-82.615	0.00068625	6.9314	96.164	229.95	326.12	0.54905	1.7559
3	-77.815	0.00069193	4.7335	102.02	227.35	329.37	0.57938	1.7433
5	-71.333	0.00069975	2.9301	109.94	223.88	333.81	0.61926	1.7286
10	-61.646	0.00071185	1.5306	121.82	218.75	340.57	0.67674	1.711
20	-50.753	0.00072612	0.8005	135.27	213	348.27	0.73873	1.6965
30	-43.723	0.00073575	0.54802	144.01	209.27	353.28	0.7774	1.6895
50	-34.062	0.00074963	0.33991	156.13	204.06	360.19	0.82905	1.6826
100	-19.274	0.00077255	0.17743	174.92	195.8	370.72	0.90518	1.6764
200	-2.14	0.00080236	0.092092	197.18	185.53	382.71	0.98971	1.6743
300	9.193	0.00082452	0.062426	212.24	178.18	390.42	1.0439	1.6749
500	25.098	0.00086002	0.037881	233.94	166.85	400.78	1.118	1.6774
1000	50.109	0.00093163	0.018623	269.81	145.58	415.39	1.232	1.6824
2000	79.82	0.001071	0.0083592	316.88	110.46	427.35	1.3682	1.6812
3000	99.563	0.0012786	0.0045195	354.61	71.6	426.21	1.4689	1.661

Diagrams

p–h diagram of R1234ze(E), with isotherms

T–s diagram of R1234ze(E), with isobars

Superheated vapor table

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

Superheated R1234ze(E) at 20 kPa (Tsat -50.753 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.8005	332.26	348.27	1.6965
-40	0.8408	339.66	356.47	1.7325
-20	0.91537	353.95	372.26	1.7974
0	0.98954	368.91	388.7	1.8599
20	1.0634	384.5	405.77	1.9202
40	1.1371	400.71	423.45	1.9786
60	1.2106	417.53	441.74	2.0352
80	1.2841	434.95	460.63	2.0902
100	1.3574	452.97	480.11	2.1439
120	1.4306	471.57	500.18	2.1963
140	1.5038	490.75	520.83	2.2475

Superheated R1234ze(E) at 50 kPa (Tsat -34.062 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.33991	343.19	360.19	1.6826
-20	0.36158	353.39	371.47	1.7284
0	0.39205	368.45	388.05	1.7914
20	0.42222	384.12	405.23	1.8521
40	0.45217	400.39	422.99	1.9107
60	0.48196	417.25	441.35	1.9675
80	0.51163	434.71	460.29	2.0227
100	0.54121	452.75	479.82	2.0765
120	0.57072	471.38	499.92	2.129
140	0.60019	490.58	520.59	2.1803

Superheated R1234ze(E) at 100 kPa (Tsat -19.274 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.17743	352.98	370.72	1.6764
0	0.1928	367.66	386.94	1.738
20	0.20843	383.46	404.3	1.7993
40	0.22382	399.83	422.22	1.8584
60	0.23905	416.78	440.69	1.9156
80	0.25414	434.3	459.72	1.971
100	0.26915	452.4	479.31	2.025
120	0.28408	471.06	499.47	2.0776
140	0.29897	490.3	520.19	2.129

Superheated R1234ze(E) at 200 kPa (Tsat -2.14 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.092092	364.29	382.71	1.6743
0	0.093015	365.99	384.59	1.6812
20	0.10144	382.09	402.38	1.744
40	0.10959	398.69	420.61	1.8042
60	0.11755	415.81	439.33	1.8621
80	0.12538	433.47	458.55	1.9181
100	0.1331	451.67	478.29	1.9725
120	0.14076	470.42	498.57	2.0255
140	0.14835	489.72	519.39	2.0771

Superheated R1234ze(E) at 500 kPa (Tsat 25.098 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.037881	381.84	400.78	1.6774
40	0.040817	394.92	415.33	1.725
60	0.044518	412.7	434.96	1.7858
80	0.048035	430.83	454.85	1.8438
100	0.051426	449.4	475.11	1.8996
120	0.054728	468.43	495.8	1.9536
140	0.057964	487.96	516.94	2.006

Superheated R1234ze(E) at 1 MPa (Tsat 50.109 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.018623	396.77	415.39	1.6824
60	0.019848	406.46	426.3	1.7156
80	0.022076	425.83	447.91	1.7786
100	0.024099	445.23	469.33	1.8376
120	0.025994	464.87	490.86	1.8938
140	0.027803	484.84	512.64	1.9479

Superheated R1234ze(E) at 2 MPa (Tsat 79.82 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.0083592	410.63	427.35	1.6812
100	0.010129	434.61	454.87	1.7571
120	0.011474	456.45	479.4	1.8211
140	0.012643	477.82	503.11	1.88

Enthalpy and entropy are measured from R1234ze(E)'s own reference state (CoolProp's default). The textbooks' refrigerant tables use ASHRAE's: in the Worksheet, write reference ASHRAE.