Superheated helium vapor table

Name: Superheated helium vapor table
Creator: Simuveliq

This table gives v, u, h and s of superheated vapor in pressure blocks. Above you can use it interactively (switch units with SI/US, pick the pressure or go to the calculator for any point with step-by-step interpolation). Reference state: NBP: h = 0 and s = 0 for saturated liquid at the normal boiling point (1 atm).

The table as text, SI units

P = 0.015 MPa (T_sat = −270.44 °C)
T [°C]	v [m³/kg]	u [kJ/kg]	h [kJ/kg]	s [kJ/kg·K]
Sat.	0.33730	12.823	17.883	7.2461
−250	3.2058	77.113	125.20	18.642
−200	10.133	232.96	384.95	24.619
−150	17.057	388.76	644.62	27.324
−100	23.982	544.56	904.29	29.094
−50	30.906	700.36	1164.0	30.411
0	37.830	856.16	1423.6	31.461
50	44.754	1012.0	1683.3	32.334
100	51.678	1167.8	1942.9	33.081
150	58.602	1323.5	2202.6	33.734
200	65.527	1479.3	2462.2	34.314
250	72.451	1635.1	2721.9	34.836
300	79.375	1790.9	2981.6	35.310
350	86.299	1946.7	3241.2	35.745
400	93.223	2102.5	3500.9	36.145

P = 0.02 MPa (T_sat = −270.27 °C)
T [°C]	v [m³/kg]	u [kJ/kg]	h [kJ/kg]	s [kJ/kg·K]
Sat.	0.26349	13.177	18.447	6.9159
−250	2.4044	77.092	125.18	18.043
−200	7.6003	232.95	384.96	24.021
−150	12.794	388.76	644.64	26.727
−100	17.987	544.56	904.30	28.496
−50	23.180	700.36	1164.0	29.814
0	28.373	856.16	1423.6	30.864
50	33.566	1012.0	1683.3	31.737
100	38.759	1167.8	1942.9	32.484
150	43.953	1323.5	2202.6	33.137
200	49.146	1479.3	2462.3	33.717
250	54.339	1635.1	2721.9	34.239
300	59.532	1790.9	2981.6	34.712
350	64.725	1946.7	3241.2	35.147
400	69.918	2102.5	3500.9	35.548

P = 0.025 MPa (T_sat = −270.12 °C)
T [°C]	v [m³/kg]	u [kJ/kg]	h [kJ/kg]	s [kJ/kg·K]
Sat.	0.21719	13.451	18.881	6.6586
−250	1.9235	77.070	125.16	17.579
−200	6.0807	232.95	384.97	23.558
−150	10.236	388.76	644.65	26.263
−100	14.390	544.56	904.32	28.033
−50	18.545	700.36	1164.0	29.350
0	22.699	856.16	1423.6	30.400
50	26.854	1012.0	1683.3	31.273
100	31.008	1167.8	1943.0	32.020
150	35.163	1323.5	2202.6	32.673
200	39.317	1479.3	2462.3	33.253
250	43.472	1635.1	2721.9	33.775
300	47.626	1790.9	2981.6	34.249
350	51.781	1946.7	3241.2	34.683
400	55.935	2102.5	3500.9	35.084

P = 0.03 MPa (T_sat = −270.00 °C)
T [°C]	v [m³/kg]	u [kJ/kg]	h [kJ/kg]	s [kJ/kg·K]
Sat.	0.18520	13.671	19.227	6.4464
−250	1.6029	77.049	125.14	17.199
−200	5.0677	232.94	384.97	23.179
−150	8.5302	388.76	644.66	25.884
−100	11.992	544.56	904.33	27.654
−50	15.454	700.36	1164.0	28.971
0	18.916	856.16	1423.7	30.021
50	22.378	1012.0	1683.3	30.894
100	25.841	1167.8	1943.0	31.642
150	29.303	1323.5	2202.6	32.295
200	32.765	1479.3	2462.3	32.875
250	36.227	1635.1	2721.9	33.396
300	39.689	1790.9	2981.6	33.870
350	43.151	1946.7	3241.3	34.305
400	46.613	2102.5	3500.9	34.705

P = 0.04 MPa (T_sat = −269.78 °C)
T [°C]	v [m³/kg]	u [kJ/kg]	h [kJ/kg]	s [kJ/kg·K]
Sat.	0.14351	14.001	19.741	6.1055
−250	1.2022	77.006	125.09	16.600
−200	3.8015	232.93	384.99	22.581
−150	6.3984	388.75	644.69	25.287
−100	8.9950	544.56	904.36	27.056
−50	11.592	700.36	1164.0	28.374
0	14.188	856.16	1423.7	29.424
50	16.785	1012.0	1683.3	30.297
100	19.381	1167.8	1943.0	31.044
150	21.978	1323.5	2202.7	31.697
200	24.574	1479.3	2462.3	32.277
250	27.171	1635.1	2722.0	32.799
300	29.767	1790.9	2981.6	33.273
350	32.364	1946.7	3241.3	33.707
400	34.960	2102.5	3500.9	34.108

P = 0.05 MPa (T_sat = −269.60 °C)
T [°C]	v [m³/kg]	u [kJ/kg]	h [kJ/kg]	s [kJ/kg·K]
Sat.	0.11727	14.231	20.094	5.8332
−250	0.96172	76.963	125.05	16.134
−200	3.0417	232.92	385.01	22.118
−150	5.1193	388.75	644.72	24.823
−100	7.1966	544.56	904.39	26.593
−50	9.2739	700.37	1164.1	27.910
0	11.351	856.16	1423.7	28.960
50	13.428	1012.0	1683.4	29.833
100	15.505	1167.8	1943.0	30.580
150	17.583	1323.6	2202.7	31.233
200	19.660	1479.3	2462.3	31.814
250	21.737	1635.2	2722.0	32.335
300	23.814	1791.0	2981.7	32.809
350	25.892	1946.7	3241.3	33.243
400	27.969	2102.5	3501.0	33.644

P = 0.06 MPa (T_sat = −269.44 °C)
T [°C]	v [m³/kg]	u [kJ/kg]	h [kJ/kg]	s [kJ/kg·K]
Sat.	0.099062	14.391	20.335	5.6028
−250	0.80143	76.920	125.01	15.754
−200	2.5352	232.91	385.02	21.739
−150	4.2666	388.75	644.74	24.445
−100	5.9977	544.56	904.42	26.214
−50	7.7287	700.37	1164.1	27.532
0	9.4597	856.17	1423.8	28.582
50	11.191	1012.0	1683.4	29.455
100	12.922	1167.8	1943.1	30.202
150	14.653	1323.6	2202.7	30.855
200	16.384	1479.4	2462.4	31.435
250	18.115	1635.2	2722.0	31.956
300	19.846	1791.0	2981.7	32.430
350	21.577	1946.8	3241.3	32.865
400	23.308	2102.5	3501.0	33.266

P = 0.08 MPa (T_sat = −269.17 °C)
T [°C]	v [m³/kg]	u [kJ/kg]	h [kJ/kg]	s [kJ/kg·K]
Sat.	0.075187	14.559	20.574	5.2173
−250	0.60106	76.834	124.92	15.152
−200	1.9021	232.89	385.06	21.141
−150	3.2007	388.74	644.80	23.847
−100	4.4990	544.56	904.48	25.617
−50	5.7973	700.37	1164.2	26.934
0	7.0955	856.17	1423.8	27.984
50	8.3938	1012.0	1683.5	28.857
100	9.6920	1167.8	1943.1	29.604
150	10.990	1323.6	2202.8	30.257
200	12.289	1479.4	2462.4	30.837
250	13.587	1635.2	2722.1	31.359
300	14.885	1791.0	2981.8	31.833
350	16.183	1946.8	3241.4	32.267
400	17.482	2102.6	3501.1	32.668

P = 0.1 MPa (T_sat = −268.94 °C)
T [°C]	v [m³/kg]	u [kJ/kg]	h [kJ/kg]	s [kJ/kg·K]
Sat.	0.059983	14.573	20.572	4.8892
−250	0.48085	76.749	124.83	14.685
−200	1.5222	232.87	385.09	20.677
−150	2.5612	388.74	644.85	23.383
−100	3.5998	544.56	904.54	25.153
−50	4.6384	700.37	1164.2	26.471
0	5.6770	856.18	1423.9	27.521
50	6.7156	1012.0	1683.5	28.393
100	7.7542	1167.8	1943.2	29.141
150	8.7928	1323.6	2202.9	29.794
200	9.8314	1479.4	2462.5	30.374
250	10.870	1635.2	2722.2	30.895
300	11.909	1791.0	2981.8	31.369
350	12.947	1946.8	3241.5	31.804
400	13.986	2102.6	3501.1	32.205

P = 0.15 MPa (T_sat = −268.48 °C)
T [°C]	v [m³/kg]	u [kJ/kg]	h [kJ/kg]	s [kJ/kg·K]
Sat.	0.037744	14.041	19.703	4.1582
−250	0.32057	76.535	124.62	13.834
−200	1.0157	232.82	385.18	19.834
−150	1.7084	388.72	644.99	22.541
−100	2.4009	544.56	904.70	24.311
−50	3.0933	700.38	1164.4	25.628
0	3.7857	856.19	1424.0	26.678
50	4.4780	1012.0	1683.7	27.551
100	5.1704	1167.8	1943.4	28.298
150	5.8628	1323.6	2203.0	28.951
200	6.5552	1479.4	2462.7	29.531
250	7.2475	1635.2	2722.3	30.053
300	7.9399	1791.0	2982.0	30.527
350	8.6323	1946.8	3241.6	30.962
400	9.3247	2102.6	3501.3	31.362

P = 0.2 MPa (T_sat = −268.13 °C)
T [°C]	v [m³/kg]	u [kJ/kg]	h [kJ/kg]	s [kJ/kg·K]
Sat.	0.024283	12.404	17.260	3.3404
−250	0.24044	76.321	124.41	13.227
−200	0.76243	232.77	385.26	19.236
−150	1.2821	388.70	645.12	21.943
−100	1.8014	544.56	904.85	23.713
−50	2.3207	700.39	1164.5	25.031
0	2.8400	856.21	1424.2	26.081
50	3.3593	1012.0	1683.9	26.954
100	3.8785	1167.8	1943.5	27.701
150	4.3978	1323.6	2203.2	28.354
200	4.9171	1479.4	2462.8	28.934
250	5.4363	1635.2	2722.5	29.456
300	5.9556	1791.0	2982.1	29.930
350	6.4749	1946.8	3241.8	30.364
400	6.9942	2102.6	3501.4	30.765

P = 0.25 MPa
T [°C]	v [m³/kg]	u [kJ/kg]	h [kJ/kg]	s [kJ/kg·K]
−250	0.19237	76.108	124.20	12.755
−200	0.61048	232.72	385.34	18.772
−150	1.0263	388.69	645.25	21.480
−100	1.4418	544.56	905.00	23.250
−50	1.8572	700.40	1164.7	24.567
0	2.2726	856.22	1424.4	25.617
50	2.6880	1012.0	1684.0	26.490
100	3.1034	1167.8	1943.7	27.237
150	3.5188	1323.6	2203.3	27.890
200	3.9342	1479.5	2463.0	28.470
250	4.3496	1635.3	2722.7	28.992
300	4.7650	1791.0	2982.3	29.466
350	5.1804	1946.8	3241.9	29.901
400	5.5958	2102.6	3501.6	30.301

P = 0.3 MPa
T [°C]	v [m³/kg]	u [kJ/kg]	h [kJ/kg]	s [kJ/kg·K]
−250	0.16032	75.895	123.99	12.367
−200	0.50918	232.67	385.43	18.392
−150	0.85572	388.68	645.39	21.101
−100	1.2020	544.56	905.15	22.871
−50	1.5482	700.41	1164.9	24.189
0	1.8943	856.23	1424.5	25.239
50	2.2405	1012.0	1684.2	26.112
100	2.5867	1167.9	1943.8	26.859
150	2.9328	1323.7	2203.5	27.512
200	3.2790	1479.5	2463.2	28.092
250	3.6251	1635.3	2722.8	28.613
300	3.9713	1791.1	2982.5	29.087
350	4.3175	1946.9	3242.1	29.522
400	4.6636	2102.7	3501.8	29.923

P = 0.4 MPa
T [°C]	v [m³/kg]	u [kJ/kg]	h [kJ/kg]	s [kJ/kg·K]
−250	0.12029	75.471	123.58	11.751
−200	0.38256	232.57	385.60	17.793
−150	0.64254	388.64	645.66	20.503
−100	0.90224	544.56	905.46	22.273
−50	1.1619	700.42	1165.2	23.591
0	1.4215	856.26	1424.9	24.641
50	1.6811	1012.1	1684.5	25.514
100	1.9407	1167.9	1944.2	26.261
150	2.2003	1323.7	2203.8	26.914
200	2.4599	1479.5	2463.5	27.494
250	2.7195	1635.3	2723.1	28.016
300	2.9792	1791.1	2982.8	28.490
350	3.2388	1946.9	3242.4	28.924
400	3.4984	2102.7	3502.1	29.325

P = 0.5 MPa
T [°C]	v [m³/kg]	u [kJ/kg]	h [kJ/kg]	s [kJ/kg·K]
−250	0.096274	75.049	123.19	11.270
−200	0.30659	232.48	385.77	17.328
−150	0.51463	388.61	645.93	20.039
−100	0.72240	544.56	905.76	21.810
−50	0.93011	700.44	1165.5	23.128
0	1.1378	856.29	1425.2	24.178
50	1.3455	1012.1	1684.8	25.051
100	1.5531	1167.9	1944.5	25.798
150	1.7608	1323.8	2204.2	26.451
200	1.9685	1479.6	2463.8	27.031
250	2.1762	1635.4	2723.4	27.552
300	2.3838	1791.2	2983.1	28.026
350	2.5915	1947.0	3242.7	28.461
400	2.7992	2102.8	3502.4	28.862

P = 0.6 MPa
T [°C]	v [m³/kg]	u [kJ/kg]	h [kJ/kg]	s [kJ/kg·K]
−250	0.080279	74.627	122.80	10.874
−200	0.25594	232.38	385.94	16.948
−150	0.42936	388.58	646.20	19.660
−100	0.60251	544.56	906.07	21.431
−50	0.77560	700.46	1165.8	22.749
0	0.94866	856.31	1425.5	23.799
50	1.1217	1012.1	1685.2	24.672
100	1.2948	1168.0	1944.8	25.419
150	1.4678	1323.8	2204.5	26.072
200	1.6409	1479.6	2464.1	26.652
250	1.8139	1635.4	2723.8	27.174
300	1.9870	1791.2	2983.4	27.648
350	2.1601	1947.0	3243.1	28.082
400	2.3331	2102.8	3502.7	28.483

The table as text, English units

P = 1.5 psia (T_sat = −455.16 °F)
T [°F]	v [ft³/lbm]	u [Btu/lbm]	h [Btu/lbm]	s [Btu/lbm·R]
Sat.	7.4167	5.3206	7.3793	1.8327
−400	106.67	46.563	76.174	5.0828
−300	285.44	121.00	200.23	6.3038
−200	464.19	195.42	324.27	6.9070
−100	642.93	269.84	448.31	7.3111
0	821.68	344.26	572.34	7.6154
100	1000.4	418.69	696.38	7.8596
200	1179.2	493.11	820.41	8.0635
300	1357.9	567.53	944.45	8.2385
400	1536.7	641.95	1068.5	8.3919
500	1715.4	716.38	1192.5	8.5284
600	1894.1	790.80	1316.6	8.6514
700	2072.9	865.22	1440.6	8.7632
800	2251.6	939.64	1564.6	8.8658

P = 2.5 psia (T_sat = −454.65 °F)
T [°F]	v [ft³/lbm]	u [Btu/lbm]	h [Btu/lbm]	s [Btu/lbm·R]
Sat.	4.7965	5.5863	7.8053	1.6926
−400	64.013	46.555	76.169	4.8292
−300	171.28	120.99	200.23	6.0504
−200	278.53	195.42	324.28	6.6536
−100	385.78	269.84	448.31	7.0577
0	493.03	344.27	572.35	7.3620
100	600.27	418.69	696.39	7.6061
200	707.52	493.11	820.42	7.8100
300	814.76	567.53	944.46	7.9851
400	922.01	641.96	1068.5	8.1385
500	1029.3	716.38	1192.5	8.2750
600	1136.5	790.80	1316.6	8.3979
700	1243.7	865.22	1440.6	8.5098
800	1351.0	939.64	1564.6	8.6124

P = 4 psia (T_sat = −454.10 °F)
T [°F]	v [ft³/lbm]	u [Btu/lbm]	h [Btu/lbm]	s [Btu/lbm·R]
Sat.	3.1936	5.8340	8.1980	1.5631
−400	40.015	46.542	76.161	4.5958
−300	107.07	120.99	200.24	5.8172
−200	174.10	195.42	324.29	6.4204
−100	241.13	269.84	448.33	6.8245
0	308.16	344.27	572.37	7.1288
100	375.19	418.69	696.40	7.3729
200	442.21	493.11	820.44	7.5768
300	509.24	567.53	944.48	7.7519
400	576.27	641.96	1068.5	7.9053
500	643.30	716.38	1192.5	8.0418
600	710.33	790.80	1316.6	8.1647
700	777.35	865.22	1440.6	8.2766
800	844.38	939.64	1564.7	8.3792

P = 6 psia (T_sat = −453.56 °F)
T [°F]	v [ft³/lbm]	u [Btu/lbm]	h [Btu/lbm]	s [Btu/lbm·R]
Sat.	2.2305	6.0350	8.5115	1.4486
−400	26.683	46.525	76.151	4.3943
−300	71.395	120.99	200.26	5.6160
−200	116.08	195.42	324.31	6.2192
−100	160.77	269.84	448.35	6.6233
0	205.46	344.27	572.38	6.9276
100	250.14	418.69	696.42	7.1718
200	294.82	493.12	820.46	7.3757
300	339.51	567.54	944.50	7.5507
400	384.19	641.96	1068.5	7.7041
500	428.88	716.38	1192.6	7.8406
600	473.56	790.80	1316.6	7.9636
700	518.25	865.23	1440.6	8.0754
800	562.93	939.65	1564.7	8.1780

P = 10 psia (T_sat = −452.76 °F)
T [°F]	v [ft³/lbm]	u [Btu/lbm]	h [Btu/lbm]	s [Btu/lbm·R]
Sat.	1.3913	6.2287	8.8033	1.2947
−400	16.018	46.490	76.132	4.1403
−300	42.855	120.98	200.28	5.3625
−200	69.670	195.42	324.34	5.9658
−100	96.482	269.85	448.38	6.3699
0	123.29	344.27	572.42	6.6742
100	150.10	418.70	696.46	6.9183
200	176.91	493.12	820.50	7.1222
300	203.72	567.54	944.53	7.2973
400	230.53	641.97	1068.6	7.4507
500	257.35	716.39	1192.6	7.5872
600	284.16	790.81	1316.6	7.7101
700	310.97	865.23	1440.7	7.8220
800	337.78	939.65	1564.7	7.9246

P = 20 psia (T_sat = −451.45 °F)
T [°F]	v [ft³/lbm]	u [Btu/lbm]	h [Btu/lbm]	s [Btu/lbm·R]
Sat.	0.67142	6.1250	8.6099	1.0348
−400	8.0189	46.405	76.083	3.7950
−300	21.450	120.96	200.34	5.0184
−200	34.859	195.41	324.43	5.6219
−100	48.265	269.85	448.48	6.0260
0	61.670	344.28	572.52	6.3303
100	75.075	418.70	696.56	6.5744
200	88.480	493.13	820.59	6.7783
300	101.89	567.55	944.63	6.9534
400	115.29	641.98	1068.7	7.1068
500	128.69	716.40	1192.7	7.2433
600	142.10	790.83	1316.7	7.3662
700	155.50	865.25	1440.8	7.4781
800	168.91	939.67	1564.8	7.5807

P = 30 psia (T_sat = −450.55 °F)
T [°F]	v [ft³/lbm]	u [Btu/lbm]	h [Btu/lbm]	s [Btu/lbm·R]
Sat.	0.36267	5.1607	7.1741	0.76310
−400	5.3527	46.320	76.036	3.5924
−300	14.315	120.94	200.41	4.8171
−200	23.256	195.41	324.51	5.4207
−100	32.193	269.85	448.57	5.8248
0	41.130	344.29	572.62	6.1291
100	50.066	418.71	696.65	6.3733
200	59.002	493.14	820.69	6.5772
300	67.938	567.57	944.73	6.7523
400	76.875	641.99	1068.8	6.9056
500	85.811	716.42	1192.8	7.0421
600	94.747	790.84	1316.8	7.1651
700	103.68	865.26	1440.9	7.2769
800	112.62	939.69	1564.9	7.3795

P = 50 psia
T [°F]	v [ft³/lbm]	u [Btu/lbm]	h [Btu/lbm]	s [Btu/lbm·R]
−400	3.2200	46.151	75.944	3.3362
−300	8.6075	120.89	200.53	4.5634
−200	13.973	195.40	324.68	5.1672
−100	19.335	269.86	448.76	5.5714
0	24.697	344.30	572.81	5.8757
100	30.058	418.73	696.85	6.1199
200	35.420	493.17	820.88	6.3238
300	40.781	567.59	944.92	6.4989
400	46.142	642.02	1069.0	6.6522
500	51.504	716.45	1193.0	6.7887
600	56.865	790.87	1317.0	6.9117
700	62.227	865.29	1441.0	7.0235
800	67.589	939.72	1565.1	7.1261

P = 80 psia
T [°F]	v [ft³/lbm]	u [Btu/lbm]	h [Btu/lbm]	s [Btu/lbm·R]
−400	2.0208	45.900	75.815	3.0989
−300	5.3968	120.83	200.72	4.3299
−200	8.7513	195.38	324.94	4.9339
−100	12.103	269.87	449.04	5.3382
0	15.454	344.32	573.10	5.6426
100	18.804	418.76	697.14	5.8867
200	22.155	493.20	821.18	6.0907
300	25.505	567.63	945.21	6.2657
400	28.856	642.06	1069.2	6.4191
500	32.206	716.49	1193.3	6.5556
600	35.557	790.91	1317.3	6.6785
700	38.908	865.34	1441.3	6.7904
800	42.258	939.76	1565.4	6.8930

Sources

Values computed by Simuveliq with CoolProp 8.0.0 (downloaded from PyPI, code on GitHub), free software under the MIT license. The temperatures and pressures of the table were chosen by Simuveliq; no table was copied from a book.

Equation of state: D. O. Ortiz-Vega, K. R. Hall, J. C. Holste, V. D. Arp, A. H. Harvey, E. W. Lemmon (2019). Equation of state for Helium-4. .
CoolProp: Bell, Ian H., Wronski, Jorrit, Quoilin, Sylvain, Lemort, Vincent (2014). Pure and Pseudo-pure Fluid Thermophysical Property Evaluation and the Open-Source Thermophysical Property Library CoolProp. Ind. Eng. Chem. Res. 53, 2498–2508. doi:10.1021/ie4033999

Full sources and licenses

Tables

Water: saturation (T) · saturation (P) · superheated vapor · compressed liquid
R-134a: saturation (T) · saturation (P) · superheated vapor
R-22: saturation (T) · saturation (P) · superheated vapor
R-32: saturation (T) · saturation (P) · superheated vapor
R-404A: saturation (T) · saturation (P) · superheated vapor
R-410A: saturation (T) · saturation (P) · superheated vapor
R-1234yf: saturation (T) · saturation (P) · superheated vapor
Ammonia (R-717): saturation (T) · saturation (P) · superheated vapor
Carbon dioxide (R-744): saturation (T) · saturation (P) · superheated vapor
Propane (R-290): saturation (T) · saturation (P) · superheated vapor
Isobutane (R-600a): saturation (T) · saturation (P) · superheated vapor
Nitrogen: saturation (T) · saturation (P) · superheated vapor
Oxygen: saturation (T) · saturation (P) · superheated vapor
Hydrogen: saturation (T) · saturation (P) · superheated vapor
Helium: saturation (T) · saturation (P) · superheated vapor
Argon: saturation (T) · saturation (P) · superheated vapor
Methane: saturation (T) · saturation (P) · superheated vapor
Air: ideal gas
Nitrogen (N₂) per mole: ideal gas
Oxygen (O₂) per mole: ideal gas
Carbon dioxide (CO₂) per mole: ideal gas
Carbon monoxide (CO) per mole: ideal gas
Hydrogen (H₂) per mole: ideal gas
Water vapor (H₂O) per mole: ideal gas
critical constants and molar mass
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