Helium saturation table by pressure

Name: Helium saturation table by pressure
Creator: Simuveliq

This table gives saturation temperature and properties of saturated liquid and vapor for each pressure. 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]
P [kPa]	T_sat [°C]	v_f	v_g	u_f	u_fg	u_g	h_f	h_fg	h_g	s_f	s_fg	s_g
6	−270.90	0.006854	0.73454	−6.6778	18.436	11.758	−6.6366	22.802	16.165	−1.8280	10.134	8.3064
7	−270.83	0.006863	0.64465	−6.4969	18.424	11.928	−6.4489	22.889	16.440	−1.7488	9.8745	8.1257
8	−270.77	0.006874	0.57570	−6.3434	18.421	12.078	−6.2884	22.972	16.684	−1.6834	9.6536	7.9702
9	−270.71	0.006886	0.52099	−6.2081	18.421	12.213	−6.1461	23.048	16.902	−1.6271	9.4608	7.8336
10	−270.66	0.006899	0.47643	−6.0855	18.422	12.336	−6.0165	23.117	17.101	−1.5773	9.2892	7.7119
12	−270.57	0.006925	0.40802	−5.8666	18.419	12.553	−5.7835	23.233	17.449	−1.4908	8.9929	7.5021
14	−270.48	0.006952	0.35778	−5.6716	18.411	12.739	−5.5742	23.322	17.748	−1.4164	8.7416	7.3252
16	−270.40	0.006978	0.31917	−5.4928	18.395	12.902	−5.3811	23.390	18.009	−1.3502	8.5223	7.1721
18	−270.33	0.007005	0.28850	−5.3260	18.373	13.047	−5.1999	23.440	18.240	−1.2900	8.3270	7.0370
20	−270.27	0.007031	0.26349	−5.1684	18.345	13.177	−5.0278	23.474	18.447	−1.2345	8.1505	6.9159
25	−270.12	0.007094	0.21719	−4.8041	18.255	13.451	−4.6268	23.508	18.881	−1.1107	7.7693	6.6586
30	−270.00	0.007156	0.18520	−4.4704	18.141	13.671	−4.2557	23.483	19.227	−1.0021	7.4485	6.4464
35	−269.88	0.007216	0.16165	−4.1583	18.009	13.851	−3.9058	23.415	19.509	−0.90427	7.1691	6.2649
40	−269.78	0.007275	0.14351	−3.8625	17.863	14.001	−3.5715	23.313	19.741	−0.81444	6.9200	6.1055
45	−269.69	0.007334	0.12907	−3.5795	17.706	14.126	−3.2495	23.184	19.934	−0.73087	6.6938	5.9629
50	−269.60	0.007393	0.11727	−3.3068	17.538	14.231	−2.9372	23.032	20.094	−0.65233	6.4855	5.8332
60	−269.44	0.007510	0.099062	−2.7853	17.176	14.391	−2.3347	22.669	20.335	−0.50692	6.1098	5.6028
70	−269.30	0.007628	0.085602	−2.2873	16.784	14.497	−1.7534	22.243	20.489	−0.37322	5.7736	5.4004
80	−269.17	0.007749	0.075187	−1.8060	16.365	14.559	−1.1861	21.760	20.574	−0.24802	5.4653	5.2173
90	−269.05	0.007874	0.066846	−1.3361	15.920	14.584	−0.62746	21.227	20.600	−0.12912	5.1774	5.0482
100	−268.94	0.008004	0.059983	−0.87365	15.447	14.573	−0.073297	20.645	20.572	−0.014864	4.9040	4.8892
120	−268.74	0.008284	0.049264	0.042327	14.416	14.458	1.0364	19.333	20.370	0.20480	4.3853	4.5901
140	−268.56	0.008605	0.041150	0.96699	13.248	14.215	2.1717	17.804	19.976	0.41964	3.8827	4.3023
160	−268.40	0.008989	0.034657	1.9277	11.901	13.829	3.3659	16.008	19.374	0.63785	3.3735	4.0114
180	−268.26	0.009478	0.029187	2.9642	10.295	13.260	4.6703	13.843	18.513	0.87018	2.8304	3.7006
200	−268.13	0.01017	0.024283	4.1584	8.2452	12.404	6.1926	11.068	17.260	1.1376	2.2028	3.3404

The table as text, English units

		Specific volume [ft³/lbm]		Internal energy [Btu/lbm]			Enthalpy [Btu/lbm]			Entropy [Btu/lbm·R]
P [psia]	T_sat [°F]	v_f	v_g	u_f	u_fg	u_g	h_f	h_fg	h_g	s_f	s_fg	s_g
0.8	−455.68	0.1097	12.635	−2.9148	7.9310	5.0161	−2.8986	9.7852	6.8866	−0.44754	2.4552	2.0076
0.9	−455.59	0.1098	11.436	−2.8537	7.9245	5.0708	−2.8354	9.8108	6.9753	−0.43237	2.4069	1.9745
1	−455.51	0.1099	10.460	−2.8007	7.9214	5.1207	−2.7804	9.8366	7.0562	−0.41950	2.3645	1.9450
1.2	−455.36	0.1102	8.9626	−2.7106	7.9197	5.2091	−2.6861	9.8855	7.1993	−0.39821	2.2925	1.8943
1.4	−455.22	0.1104	7.8642	−2.6341	7.9199	5.2858	−2.6054	9.9286	7.3232	−0.38071	2.2324	1.8517
1.6	−455.10	0.1107	7.0209	−2.5662	7.9197	5.3535	−2.5334	9.9656	7.4323	−0.36564	2.1806	1.8150
1.8	−454.99	0.1110	6.3513	−2.5043	7.9184	5.4141	−2.4673	9.9970	7.5297	−0.35224	2.1349	1.7826
2	−454.88	0.1113	5.8056	−2.4468	7.9157	5.4689	−2.4056	10.023	7.6176	−0.34007	2.0938	1.7537
2.5	−454.65	0.1120	4.7965	−2.3166	7.9029	5.5863	−2.2648	10.070	7.8053	−0.31346	2.0061	1.6926
3	−454.45	0.1128	4.1000	−2.1996	7.8825	5.6829	−2.1370	10.096	7.9590	−0.29054	1.9331	1.6426
3.5	−454.27	0.1135	3.5877	−2.0915	7.8558	5.7643	−2.0180	10.106	8.0879	−0.27012	1.8703	1.6001
4	−454.10	0.1141	3.1936	−1.9901	7.8241	5.8340	−1.9056	10.104	8.1980	−0.25154	1.8147	1.5631
4.5	−453.95	0.1148	2.8802	−1.8937	7.7883	5.8945	−1.7981	10.091	8.2930	−0.23437	1.7646	1.5303
5	−453.81	0.1155	2.6244	−1.8015	7.7490	5.9474	−1.6947	10.070	8.3756	−0.21834	1.7190	1.5006
6	−453.56	0.1168	2.2305	−1.6268	7.6618	6.0350	−1.4971	10.009	8.5115	−0.18893	1.6375	1.4486
7	−453.33	0.1181	1.9401	−1.4620	7.5655	6.1035	−1.3090	9.9255	8.6166	−0.16220	1.5659	1.4037
8	−453.13	0.1194	1.7161	−1.3045	7.4615	6.1569	−1.1278	9.8253	8.6975	−0.13748	1.5013	1.3639
9	−452.94	0.1207	1.5375	−1.1528	7.3509	6.1981	−0.95181	9.7105	8.7587	−0.11432	1.4421	1.3278
10	−452.76	0.1220	1.3913	−1.0055	7.2343	6.2287	−0.77979	9.5831	8.8033	−0.092396	1.3871	1.2947
12	−452.44	0.1247	1.1650	−0.72073	6.9845	6.2637	−0.44389	9.2946	8.8507	−0.051336	1.2861	1.2348
14	−452.16	0.1275	0.99678	−0.44439	6.7130	6.2686	−0.11415	8.9651	8.8509	−0.012925	1.1937	1.1807
16	−451.90	0.1305	0.86568	−0.17229	6.4189	6.2466	0.21397	8.5957	8.8097	0.023774	1.1066	1.1303
18	−451.67	0.1337	0.75970	0.099149	6.0998	6.1989	0.54447	8.1850	8.7294	0.059481	1.0226	1.0821
20	−451.45	0.1373	0.67142	0.37339	5.7516	6.1250	0.88140	7.7285	8.6099	0.094827	0.93998	1.0348
25	−450.96	0.1486	0.49950	1.0989	4.7063	5.8052	1.7863	6.3298	8.1160	0.18604	0.72705	0.91309
30	−450.55	0.1682	0.36267	1.9940	3.1666	5.1607	2.9277	4.2464	7.1741	0.29757	0.46553	0.76310

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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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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