Steam temperature?

Using Antoine’s equation: InPs = A – B/(T + C), where for water the parameters are A = 18.3036, B = 3816.44, and C = –46.13. Taking 0.5 MPa as an example: Ps = 0.5*10^6. Substituting this value into the equation gives T = B/(A – InPs) – C = 3816.44/(18.3036 – In0.5*10^6) + 46.13 = 782.7186°C

I don’t think so; the steam produced in our factory’s boiler room is saturated steam, available at pressures of 0.8 MPa and 2.5 MPa. The temperature of saturated steam at 2.5 MPa doesn’t reach 700 degrees either. In the second stage, the steam is sent to the turbine, where superheated steam is produced at a pressure of 3.8 MPa and a temperature of around 450 degrees Celsius. Therefore, I suspect that the saturated steam pressure of 0.5 MPa cannot reach a temperature of over 700 degrees.

I found something, please refer to the saturated water vapor table 1. Arrange by temperature Temperature t/℃ Absolute pressure p/kPa Density of water vapor ρ/kg·m-3 Enthalpy H/kJ·kg-1 Heat of vaporization r/kJ·kg-1 Liquid Water vapor 00.60820.0048402491.12491.150.87300.0 068020.942500.82479.86101.22620.0094041.872510.42468.53151.70680.0128362.802520.52457.7202.33460. 0171983.742530.12446.3253.16840.02304104.672539.72435.0304.24740.03036125.602549.32423.7355.62070 .03960146.542559.02412.1407.37660.051114167.472568.62401.1459.58370.06543188.412577.82389.45012.340 0.0830209.342587.42378.15515.7430.1043230.272596.72366.46019.9230.1301251.212606.32355.16525.0140 .1611272.142615.52343.17031.1640.1979293.082624.32331.27538.5510.2416314.012633.52319.58047.3790.2 929334.942642.32307.88557.8750.3531355.882651.12295.29070.1360.4229376.812659.92283.19584.5560.50 39397.752668.72270.5100101.330.5970418.682677.02258.4105120.850.7036440.032685.02245.4110143.310.8 254460.972693.42232.0115169.110.9635482.322701.32219.0120198.641.1199503.672708.92205.2125232.191 .296525.022716.42191.8130270.251.494546.382723.92177.6135313.111.715567.732731.02163.3140361.471.9 62589.082737.72148.7145415.722.238610.852744.42134.0150476.242.543632.212750.72118.5160618.283.25 2675.752762.92037.1170792.594.113719.292773.32054.01801003.55.145763.252782.52019.31901255.66.3788 07.642790.11982.42001554.777.840852.012795.51943.52101917.729.567897.232799.31902.52202320.8811.6 0942.452801.01858.52302798.5913.98988.502800.11811.62403347.9116.761034.562796.81761.82503977.6720 .011081.452790.11708.62604693.7523.821128.762780.91651.72705503.9928.271176.912768.31591.42806417 .2433.471225.482752.01526.52907443.2939.601274.462732.31457.43008592.9446.931325.542708.01382.5310 9877.9655.591378.712680.01301.332011300.365.951436.072648.21212.1 33012879.678.531446.782610.51116.234014615.893.981562.932568.61005 .735016538.5113.21636.202516.7880.536018667.1139.61729.152442.671 3.037021040.9171.01888.252301.9411.137422070.9322.62098.02098.002. Arrange by pressure Absolute pressure p/kPa Temperature t/℃ Density of water vapor ρ/kg·m-3 Enthalpy H/kJ·kg-1 Heat of vaporization r/kJ·kg-1 Liquid water vapor 1.06.30. 0077326.482503.12476.81.512.50.0113352.262515.32463.02.017.00.0148671 .212524.22452.92.520.90.0183687.452531.82444.33.023.50.0217998.382536 .82438.13.526.10.02523109.302541.82432.54.028.70.02867120.232546.8242 6.64.530.80.03205129.002550.92421.95.032.40.03537135.692554.02416.36 .035.60.04200149.062560.12411.07.038.80.04864162.442566.32403.88.041. 30.05514172.732571.02398.29.043.30.06156181.162574.82393.610.045.30.0 6798189.592578.52388.915.053.50.09956224.032594.02370.020.060.10.1306 8251.512606.42354.930.066.50.19093288.772622.42333.740.075.00.249753 15.932634.12312.250.081.20.30799339.802644.32304.560.085.60.36514358. 212652.12393.970.089.90.42229376.612659.82283.280.093.20.47807390.082 665.32275.390.096.40.53384403.492670.82267.4100.099.60.58961416.90267 6.32259.5120.0104.50.69868437.512684.32246.8140.0109.20.80758457.672 692.12234.4160.0113.00.82981473.882698.12224.2180.0116.61.0209489.322 703.72214.3200.0120.21.1273493.712709.22204.6250.0127.21.3904534.3927 19.72185.4300.0133.31.6501560.382728.52168.1350.0138.81.9074583.76273 6.12152.3400.0143.42.1618603.612742.12138.5450.0147.72.4152622.42274 7.82125.4500.0151.72.6673639.592752.82113.2600.0158.73.1686676.222761 .42091.1700.0164.03.6657696.272767.82071.5800.0170.44.1614720.962773. 72052.7900.0175.14.6525741.822778.12036.21×103179.95.1432762.682782.5 2019.71.1×103180.25.6333780.342785.52005.11.2×103187.86.1241797.9227 88.51990.61.3×103191.56.6141814.252790.91976.71.4×103194.87.1034829.0 62792.41963.71.5×103198.27.5935843.862794.41950.71.6×103201.38.081485 7.772796.01938.21.7×103204.18.5674870.582797.11926.11.8×103206.99.053 3883.392798.11914.81.9×103209.89.5392896.212799.21903.02×103212.210. 0338907.322799.71892.43×103233.715.00751005.42798.91793.54×103250.320 .09691082.92789.81706.85×103263.825.36631146.92776.21629.26×103275.43 0.84941203.22759.51556.37×103285.736.57441253.22740.81487.68×103294.8 42.57681299.22720.51403.79×103303.248.89451343.52699.11356.610×103310 .955.54071384.02677.11293.112×103324.570.30751463.42631.21167.714×103 336.587.30201567.92583.21043.416×103347.2107.80101615.82531.1915.418× 103356.9134.48131699.82466.0766.120×103365.6176.59611817.82364.2544.9

This information is very good. Is the steam pressure temperature 135°C for all 3 cases?

Pay attention to gauge pressure and absolute pressure. Just look up the steam table, or use the Antoine equation; however, it’s necessary to find the relevant parameters and then create a simple Excel formula that allows you to input the temperature and obtain the pressure directly

Our device can handle an overheat of 0.6 MPA in two ways: at 200 and 400 degrees