Superheated Steam Table — 220 bar (22 MPa)
Specific volume, internal energy, enthalpy, entropy, density and isobaric specific heat of superheated steam at 220 bar (22 MPa), computed from IAPWS-IF97 — the same formulation the SimuPipe solver uses. Rows run from the saturation temperature (373.71 °C) to 800 °C in 20 °C steps.
| T (°C) | v (m³/kg) | ρ (kg/m³) | u (kJ/kg) | h (kJ/kg) | s (kJ/kg·K) | cp (kJ/kg·K) |
|---|---|---|---|---|---|---|
| 373.71Sat. | 4.4991e-3 | 222.2678 | 2208.6 | 2307.6 | 4.7524 | 50.3515 |
| 380 | 6.1171e-3 | 163.4751 | 2369.0 | 2503.6 | 5.0542 | 19.7392 |
| 400 | 8.2550e-3 | 121.1383 | 2554.2 | 2735.8 | 5.4050 | 8.0332 |
| 420 | 9.5880e-3 | 104.2973 | 2659.0 | 2869.9 | 5.6015 | 5.7489 |
| 440 | 0.010650 | 93.8983 | 2739.3 | 2973.6 | 5.7491 | 4.7230 |
| 460 | 0.011564 | 86.4725 | 2807.2 | 3061.6 | 5.8708 | 4.1251 |
| 480 | 0.012384 | 80.7496 | 2867.5 | 3139.9 | 5.9763 | 3.7354 |
| 500 | 0.013137 | 76.1207 | 2922.8 | 3211.8 | 6.0704 | 3.4649 |
| 520 | 0.013841 | 72.2494 | 2974.5 | 3279.0 | 6.1563 | 3.2689 |
| 540 | 0.014507 | 68.9322 | 3023.7 | 3342.9 | 6.2358 | 3.1225 |
| 560 | 0.015143 | 66.0369 | 3071.0 | 3404.1 | 6.3103 | 3.0104 |
| 580 | 0.015755 | 63.4733 | 3116.8 | 3463.4 | 6.3806 | 2.9230 |
| 600 | 0.016346 | 61.1769 | 3161.6 | 3521.2 | 6.4475 | 2.8538 |
| 620 | 0.016920 | 59.1001 | 3205.4 | 3577.7 | 6.5115 | 2.7986 |
| 640 | 0.017480 | 57.2071 | 3248.6 | 3633.2 | 6.5730 | 2.7540 |
| 660 | 0.018028 | 55.4699 | 3291.3 | 3687.9 | 6.6322 | 2.7180 |
| 680 | 0.018564 | 53.8665 | 3333.5 | 3742.0 | 6.6896 | 2.6888 |
| 700 | 0.019092 | 52.3790 | 3375.5 | 3795.5 | 6.7451 | 2.6651 |
| 720 | 0.019610 | 50.9932 | 3417.2 | 3848.6 | 6.7992 | 2.6460 |
| 740 | 0.020122 | 49.6969 | 3458.7 | 3901.4 | 6.8518 | 2.6308 |
| 760 | 0.020627 | 48.4804 | 3500.1 | 3953.8 | 6.9031 | 2.6188 |
| 780 | 0.021126 | 47.3352 | 3541.4 | 4006.1 | 6.9532 | 2.6096 |
| 800 | 0.021620 | 46.2541 | 3582.6 | 4058.2 | 7.0022 | 2.6029 |
u is not tabulated independently. Specific internal energy follows from the enthalpy and specific volume as u = h − p·v, with p in MPa and v in m³/kg (1 MPa·m³/kg = 1000 kJ/kg). At 220 bar (22 MPa) that pressure term is worth 475.6 kJ/kg at 800 °C, so u and h are far apart at high pressure and nearly equal at low pressure — a common source of error when the wrong column is read.
The first row is saturated vapour, at 373.71 °C. Below that temperature at 220 bar (22 MPa) the water is a liquid or a two-phase mixture, and this table does not apply — use the saturated tables instead.
Values are IAPWS-IF97, not interpolated. Every row is evaluated directly from the industrial formulation at that exact temperature, so there is no interpolation error between rows. If you need a temperature between the 20 °C steps, the calculator computes it exactly.