Helium saturation table by temperature

Name: Helium saturation table by temperature
Creator: Simuveliq

This table gives saturation pressure, specific volume, internal energy, enthalpy and entropy of saturated liquid and vapor for each temperature. 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

		Specific volume [m³/kg]		Internal energy [kJ/kg]			Enthalpy [kJ/kg]			Entropy [kJ/kg·K]
T [°C]	P_sat [kPa]	v_f	v_g	u_f	u_fg	u_g	h_f	h_fg	h_g	s_f	s_fg	s_g
−270.9	6.0008	0.006854	0.73446	−6.6776	18.436	11.758	−6.6365	22.802	16.166	−1.8279	10.134	8.3063
−270.8	7.5078	0.006869	0.60752	−6.4163	18.422	12.006	−6.3647	22.932	16.567	−1.7142	9.7582	8.0440
−270.7	9.2566	0.006890	0.50871	−6.1755	18.421	12.246	−6.1118	23.067	16.955	−1.6138	9.4149	7.8011
−270.6	11.267	0.006916	0.43051	−5.9435	18.421	12.477	−5.8656	23.193	17.328	−1.5209	9.0954	7.5746
−270.5	13.557	0.006946	0.36772	−5.7131	18.413	12.700	−5.6189	23.304	17.686	−1.4321	8.7941	7.3620
−270.4	16.148	0.006980	0.31667	−5.4801	18.394	12.914	−5.3674	23.395	18.027	−1.3456	8.5071	7.1615
−270.3	19.058	0.007018	0.27468	−5.2416	18.359	13.117	−5.1078	23.460	18.352	−1.2602	8.2316	6.9714
−270.2	22.305	0.007060	0.23979	−4.9958	18.307	13.311	−4.8384	23.498	18.660	−1.1751	7.9655	6.7904
−270.1	25.909	0.007105	0.21054	−4.7415	18.236	13.494	−4.5574	23.507	18.949	−1.0900	7.7071	6.6171
−270	29.888	0.007154	0.18581	−4.4776	18.144	13.666	−4.2638	23.484	19.220	−1.0044	7.4551	6.4507
−269.9	34.261	0.007207	0.16473	−4.2033	18.030	13.827	−3.9564	23.427	19.471	−0.91817	7.2083	6.2901
−269.8	39.046	0.007264	0.14664	−3.9179	17.892	13.975	−3.6343	23.335	19.700	−0.83105	6.9656	6.1345
−269.7	44.262	0.007326	0.13101	−3.6206	17.730	14.109	−3.2963	23.204	19.908	−0.74286	6.7259	5.9831
−269.6	49.928	0.007392	0.11742	−3.3107	17.540	14.230	−2.9416	23.034	20.092	−0.65342	6.4884	5.8350
−269.5	56.063	0.007464	0.10553	−2.9873	17.322	14.335	−2.5689	22.820	20.251	−0.56255	6.2521	5.6896
−269.4	62.686	0.007542	0.095071	−2.6496	17.074	14.424	−2.1768	22.561	20.384	−0.47002	6.0162	5.5461
−269.3	69.816	0.007626	0.085819	−2.2963	16.792	14.495	−1.7639	22.251	20.487	−0.37559	5.7795	5.4039
−269.2	77.475	0.007718	0.077591	−1.9263	16.474	14.547	−1.3283	21.887	20.559	−0.27897	5.5410	5.2620
−269.1	85.684	0.007819	0.070236	−1.5378	16.115	14.577	−0.86779	21.463	20.596	−0.17979	5.2996	5.1198
−269	94.464	0.007931	0.063627	−1.1290	15.712	14.583	−0.37977	20.973	20.593	−0.077630	5.0538	4.9762
−268.9	103.84	0.008055	0.057654	−0.69732	15.258	14.561	0.13911	20.409	20.548	0.028061	4.8021	4.8301
−268.8	113.84	0.008194	0.052227	−0.23975	14.747	14.507	0.69304	19.759	20.452	0.13799	4.5423	4.6803
−268.7	124.48	0.008352	0.047263	0.24787	14.167	14.415	1.2875	19.011	20.298	0.25307	4.2721	4.5252
−268.6	135.81	0.008534	0.042693	0.77107	13.506	14.277	1.9300	18.145	20.075	0.37459	3.9879	4.3625
−268.5	147.84	0.008747	0.038450	1.3376	12.745	14.082	2.6307	17.136	19.767	0.50430	3.6851	4.1894
−268.4	160.63	0.009003	0.034471	1.9590	11.855	13.814	3.4051	15.946	19.351	0.64490	3.3571	4.0020
−268.3	174.22	0.009322	0.030689	2.6535	10.794	13.447	4.2777	14.516	18.794	0.80072	2.9930	3.7938
−268.2	188.67	0.009743	0.027018	3.4545	9.4793	12.934	5.2927	12.739	18.031	0.97975	2.5734	3.5532
−268.1	204.04	0.01036	0.023315	4.4353	7.7413	12.177	6.5484	10.385	16.934	1.2000	2.0565	3.2565

The table as text, English units

		Specific volume [ft³/lbm]		Internal energy [Btu/lbm]			Enthalpy [Btu/lbm]			Entropy [Btu/lbm·R]
T [°F]	P_sat [psia]	v_f	v_g	u_f	u_fg	u_g	h_f	h_fg	h_g	s_f	s_fg	s_g
−455.6	0.89298	0.1098	11.512	−2.8577	7.9248	5.0671	−2.8396	9.8089	6.9694	−0.43335	2.4101	1.9767
−455.4	1.1421	0.1101	9.3459	−2.7350	7.9198	5.1849	−2.7117	9.8719	7.1602	−0.40389	2.3119	1.9080
−455.2	1.4354	0.1105	7.6993	−2.6215	7.9199	5.2984	−2.5922	9.9356	7.3434	−0.37790	2.2227	1.8448
−455	1.7766	0.1110	6.4226	−2.5113	7.9186	5.4073	−2.4748	9.9936	7.5188	−0.35374	2.1399	1.7862
−454.8	2.1695	0.1116	5.4158	−2.4008	7.9123	5.5115	−2.3560	10.042	7.6859	−0.33052	2.0620	1.7314
−454.6	2.6181	0.1122	4.6101	−2.2880	7.8987	5.6108	−2.2336	10.078	7.8442	−0.30777	1.9877	1.6800
−454.4	3.1261	0.1129	3.9568	−2.1716	7.8763	5.7047	−2.1063	10.100	7.9935	−0.28519	1.9165	1.6313
−454.2	3.6971	0.1137	3.4208	−2.0508	7.8438	5.7930	−1.9730	10.106	8.1333	−0.26260	1.8476	1.5850
−454	4.3349	0.1146	2.9764	−1.9250	7.8005	5.8755	−1.8331	10.096	8.2631	−0.23990	1.7806	1.5407
−453.8	5.0433	0.1155	2.6044	−1.7937	7.7454	5.9517	−1.6859	10.068	8.3823	−0.21700	1.7152	1.4982
−453.6	5.8258	0.1166	2.2902	−1.6564	7.6777	6.0213	−1.5308	10.021	8.4903	−0.19384	1.6509	1.4571
−453.4	6.6863	0.1177	2.0227	−1.5128	7.5966	6.0838	−1.3672	9.9536	8.5865	−0.17034	1.5875	1.4172
−453.2	7.6284	0.1189	1.7932	−1.3623	7.5009	6.1386	−1.1944	9.8643	8.6699	−0.14647	1.5246	1.3782
−453	8.6560	0.1202	1.5948	−1.2044	7.3896	6.1852	−1.0118	9.7515	8.7396	−0.12214	1.4620	1.3398
−452.8	9.7729	0.1217	1.4221	−1.0386	7.2613	6.2226	−0.81856	9.6131	8.7945	−0.097281	1.3993	1.3020
−452.6	10.983	0.1233	1.2709	−0.86416	7.1142	6.2500	−0.61357	9.4466	8.8330	−0.071808	1.3361	1.2644
−452.4	12.291	0.1251	1.1376	−0.68010	6.9463	6.2662	−0.39564	9.2491	8.8535	−0.045607	1.2722	1.2266
−452.2	13.701	0.1270	1.0192	−0.48537	6.7550	6.2696	−0.16327	9.0169	8.8536	−0.018542	1.2071	1.1885
−452	15.217	0.1293	0.91347	−0.27852	6.5368	6.2583	0.085485	8.7451	8.8306	0.0095662	1.1402	1.1497
−451.8	16.845	0.1318	0.81832	−0.057676	6.2873	6.2296	0.35315	8.4273	8.7805	0.038951	1.0708	1.1098
−451.6	18.591	0.1347	0.73204	0.17970	6.0002	6.1799	0.64312	8.0551	8.6983	0.069932	0.99816	1.0681
−451.4	20.460	0.1381	0.65308	0.43721	5.6669	6.1041	0.96021	7.6165	8.5767	0.10296	0.92098	1.0239
−451.2	22.459	0.1423	0.58004	0.72017	5.2745	5.9947	1.3115	7.0938	8.4053	0.13873	0.83752	0.97626
−451	24.598	0.1475	0.51151	1.0371	4.8024	5.8395	1.7084	6.4594	8.1678	0.17835	0.74503	0.92338
−450.8	26.887	0.1544	0.44580	1.4035	4.2131	5.6166	2.1716	5.6631	7.8347	0.22387	0.63845	0.86232
−450.6	29.339	0.1646	0.38022	1.8542	3.4245	5.2787	2.7476	4.5953	7.3430	0.28001	0.50665	0.78666

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

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Nitrogen (N₂) per mole: ideal gas
Oxygen (O₂) per mole: ideal gas
Carbon dioxide (CO₂) per mole: ideal gas
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Hydrogen (H₂) per mole: ideal gas
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critical constants and molar mass
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