R-32 saturation table by pressure

Name: R-32 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: ASHRAE: h = 0 and s = 0 for saturated liquid at −40 °C (−40 °F).

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
5	−96.930	0.0007511	5.5997	−89.615	398.65	309.04	−89.611	426.64	337.04	−0.43968	2.4211	1.9814
6	−94.792	0.0007542	4.7194	−86.282	396.35	310.07	−86.277	424.66	338.39	−0.42088	2.3810	1.9601
8	−91.293	0.0007592	3.6039	−80.829	392.58	311.75	−80.823	421.41	340.58	−0.39061	2.3172	1.9266
10	−88.467	0.0007633	2.9241	−76.425	389.52	313.10	−76.418	418.76	342.34	−0.36658	2.2674	1.9009
15	−83.062	0.0007715	2.0006	−67.999	383.64	315.64	−67.988	413.64	345.65	−0.32161	2.1760	1.8544
20	−78.997	0.0007777	1.5286	−61.659	379.18	317.52	−61.644	409.74	348.10	−0.28861	2.1104	1.8218
25	−75.703	0.0007829	1.2407	−56.516	375.54	319.03	−56.496	406.54	350.05	−0.26233	2.0590	1.7967
30	−72.913	0.0007874	1.0463	−52.156	372.44	320.29	−52.132	403.81	351.67	−0.24041	2.0166	1.7762
40	−68.320	0.0007950	0.79946	−44.967	367.29	322.32	−44.935	399.24	354.30	−0.20491	1.9491	1.7442
50	−64.585	0.0008013	0.64884	−39.110	363.06	323.94	−39.070	395.46	356.39	−0.17657	1.8961	1.7195
60	−61.415	0.0008068	0.54704	−34.128	359.43	325.30	−34.080	392.20	358.12	−0.15287	1.8523	1.6994
80	−56.180	0.0008161	0.41778	−25.880	353.36	327.48	−25.814	386.72	360.90	−0.11438	1.7824	1.6680
100	−51.909	0.0008240	0.33885	−19.126	348.33	329.21	−19.044	382.14	363.09	−0.083550	1.7272	1.6437
150	−43.635	0.0008400	0.23135	−5.9673	338.39	332.42	−5.8413	372.96	367.12	−0.025151	1.6250	1.5998
200	−37.323	0.0008529	0.17625	4.1485	330.58	334.73	4.3191	365.66	369.98	0.018337	1.5506	1.5689
250	−32.150	0.0008641	0.14258	12.497	324.03	336.53	12.713	359.46	372.18	0.053367	1.4916	1.5449
300	−27.731	0.0008740	0.11981	19.677	318.32	338.00	19.939	354.00	373.94	0.082898	1.4424	1.5253
400	−20.378	0.0008915	0.090873	31.729	308.54	340.27	32.085	344.53	376.62	0.13131	1.3630	1.4943
500	−14.331	0.0009068	0.073186	41.754	300.21	341.97	42.207	336.35	378.56	0.17053	1.2996	1.4701
600	−9.1503	0.0009208	0.061220	50.434	292.85	343.29	50.986	329.03	380.02	0.20376	1.2463	1.4501
800	−0.50613	0.0009461	0.046011	65.134	280.04	345.17	65.891	316.09	381.98	0.25861	1.1593	1.4180
1000	6.6240	0.0009691	0.036713	77.494	268.88	346.38	78.463	304.63	383.09	0.30344	1.0888	1.3923
1500	20.619	0.001022	0.024032	102.53	245.07	347.60	104.06	279.59	383.64	0.39095	0.95172	1.3427
2000	31.431	0.001071	0.017512	122.78	224.39	347.17	124.92	257.27	382.19	0.45893	0.84468	1.3036
2500	40.358	0.001122	0.013507	140.33	205.23	345.56	143.14	236.19	379.33	0.51611	0.75339	1.2695
3000	48.016	0.001176	0.010773	156.23	186.70	342.93	159.76	215.49	375.25	0.56667	0.67096	1.2376
4000	60.768	0.001303	0.0072068	185.53	148.87	334.40	190.74	172.49	363.22	0.65744	0.51655	1.1740
5000	71.183	0.001501	0.0048191	215.27	103.68	318.95	222.77	120.27	343.04	0.74773	0.34928	1.0970

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	−140.41	0.01206	81.806	−37.761	170.86	133.10	−37.759	182.97	145.21	−0.10261	0.57311	0.47051
1	−135.62	0.01212	66.360	−35.975	169.63	133.65	−35.973	181.91	145.93	−0.097055	0.56134	0.46429
1.5	−126.46	0.01224	45.387	−32.566	167.26	134.70	−32.562	179.86	147.29	−0.086680	0.53977	0.45309
2	−119.58	0.01233	34.672	−30.007	165.48	135.47	−30.002	178.30	148.30	−0.079078	0.52429	0.44522
2.5	−114.02	0.01241	28.140	−27.934	164.02	136.09	−27.929	177.04	149.11	−0.073034	0.51218	0.43915
3	−109.32	0.01247	23.728	−26.181	162.79	136.61	−26.174	175.95	149.78	−0.067995	0.50222	0.43422
4	−101.58	0.01258	18.131	−23.296	160.74	137.45	−23.286	174.15	150.87	−0.059849	0.48634	0.42649
5	−95.302	0.01267	14.717	−20.951	159.07	138.12	−20.939	172.67	151.73	−0.053357	0.47390	0.42054
6	−89.980	0.01275	12.409	−18.960	157.64	138.68	−18.945	171.40	152.46	−0.047932	0.46364	0.41570
8	−81.205	0.01288	9.4809	−15.671	155.25	139.58	−15.652	169.27	153.62	−0.039140	0.44726	0.40812
10	−74.060	0.01299	7.6930	−12.986	153.29	140.30	−12.961	167.50	154.54	−0.032110	0.43438	0.40227
15	−60.248	0.01322	5.2589	−7.7727	149.42	141.65	−7.7360	163.98	156.25	−0.018827	0.41054	0.39172
20	−49.738	0.01340	4.0118	−3.7827	146.41	142.63	−3.7332	161.21	157.47	−0.0089657	0.39325	0.38428
25	−41.141	0.01355	3.2499	−0.50135	143.90	143.39	−0.43865	158.87	158.43	−0.0010423	0.37958	0.37854
30	−33.807	0.01369	2.7346	2.3121	141.71	144.03	2.3880	156.82	159.21	0.0056232	0.36824	0.37386
40	−21.627	0.01393	2.0799	7.0170	138.00	145.02	7.1201	153.30	160.42	0.016519	0.34996	0.36648
50	−11.628	0.01413	1.6798	10.913	134.88	145.79	11.044	150.29	161.33	0.025318	0.33543	0.36075
60	−3.0746	0.01432	1.4091	14.274	132.13	146.40	14.433	147.61	162.05	0.032751	0.32329	0.35604
80	11.176	0.01464	1.0651	19.936	127.39	147.33	20.152	142.94	163.10	0.044971	0.30359	0.34856
100	22.914	0.01494	0.85482	24.667	123.33	147.99	24.943	138.87	163.81	0.054905	0.28776	0.34267
150	45.919	0.01558	0.56819	34.152	114.83	148.98	34.585	130.17	164.75	0.074135	0.25746	0.33159
200	63.678	0.01617	0.42109	41.713	107.68	149.39	42.311	122.66	164.97	0.088867	0.23438	0.32325
250	78.345	0.01672	0.33106	48.157	101.27	149.43	48.931	115.81	164.74	0.10105	0.21526	0.31631
300	90.942	0.01727	0.27000	53.873	95.316	149.19	54.832	109.35	164.18	0.11161	0.19859	0.31020
400	111.99	0.01841	0.19192	63.927	84.109	148.04	65.289	96.952	162.24	0.12965	0.16960	0.29925
500	129.34	0.01967	0.14340	72.911	73.134	146.04	74.731	84.582	159.31	0.14531	0.14360	0.28891
600	144.16	0.02121	0.10948	81.449	61.635	143.08	83.803	71.436	155.24	0.15989	0.11830	0.27819
800	168.56	0.02730	0.058883	100.85	29.524	130.37	104.89	34.200	139.09	0.19263	0.054438	0.24707

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: R. Tillner-Roth, A. Yokozeki (1997). An international standard equation of state for difluoromethane (R-32) for temperatures from the triple point at 136.34 K to 435 K and pressures up to 70 MPa. J. Phys. Chem. Ref. Data 26, 1273–1328. doi:10.1063/1.556002
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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Oxygen: saturation (T) · saturation (P) · superheated vapor
Hydrogen: saturation (T) · saturation (P) · superheated vapor
Helium: saturation (T) · saturation (P) · superheated vapor
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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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