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    Sunday, 1 April 2018

    Steam Tables


    Dear All,

    Hope you all're good, received some queries asking for estimating the steam pressure(absolute / gauge) on temperature basis and Steam temperature on pressure(absolute / gauge) basis.



    Recently this query was raised by Mr. Seetha Ramaiah, 

    Basically, as per me there wont be any direct formulae to determine the steam pressure and temperature, Since i've tried searching for all those, and haven't received fruitful results, so today i'm posting what i got and what i sticked to regarding this concept,





    If you want to know the temperature of steam in the transfer line based on pressure, you can use the below table:


    Pressure
    Temperature
    Water(hf)
    Specific enthalphy
    Evaporation (hfg)
    Enthalphy of Steam(hg)
    Specific volume
    bar
    kPa
    C
    Kcal/Kg
    KJ/Kg
    Kcal/Kg
    KJ/Kg
    Kcal/Kg
    KJ/Kg
    m3/Kg
    0.00
    0.00
    100.00
    100.10
    419.10
    539.74
    2256.66
    549.44
    2675.76
    1.67
    0.10
    10.00
    102.70
    102.78
    430.33
    538.06
    2249.62
    550.30
    2679.95
    1.53
    0.20
    20.00
    105.10
    105.27
    440.76
    536.48
    2243.04
    551.09
    2683.81
    1.41
    0.30
    30.00
    107.40
    107.60
    450.51
    535.01
    2236.86
    551.82
    2687.37
    1.31
    0.40
    40.00
    109.60
    109.79
    459.68
    533.61
    2231.02
    552.50
    2690.69
    1.23
    0.50
    50.00
    111.60
    111.85
    468.33
    532.28
    2225.47
    552.98
    2693
    1.15
    0.60
    60.00
    113.60
    113.81
    476.53
    531.02
    2220.19
    553.74
    2696.72
    1.08
    0.70
    70.00
    115.40
    115.68
    484.34
    529.81
    2215.13
    554.31
    2699.47
    1.02
    0.80
    80.00
    117.20
    117.45
    491.78
    528.65
    2210.29
    554.84
    2702.07
    0.97
    0.90
    90.00
    118.80
    119.15
    498.90
    527.54
    2205.64
    555.35
    2704.54
    0.92
    1.00
    100.00
    120.40
    120.79
    505.73
    526.47
    2201.16
    555.83
    2706.88
    0.88
    1.10
    110.00
    122.00
    122.35
    512.28
    525.43
    2196.83
    556.29
    2709.12
    0.84
    1.20
    120.00
    123.50
    123.86
    518.60
    524.44
    2192.68
    556.72
    2711.25
    0.81
    1.30
    130.00
    124.90
    125.31
    524.69
    523.46
    2188.60
    557.14
    2713.29
    0.77
    1.40
    140.00
    126.30
    126.67
    530.37
    522.52
    2184.67
    557.55
    2715.25
    0.74
    1.50
    150.00
    127.60
    128.08
    536.27
    521.61
    2180.86
    557.93
    2717.13
    0.72
    1.60
    160.00
    128.90
    129.40
    541.78
    520.72
    2177.15
    558.30
    2718.93
    0.69
    1.70
    170.00
    130.20
    130.67
    547.13
    519.86
    2173.54
    558.66
    2720.67
    0.67
    1.80
    180.00
    131.40
    131.91
    552.32
    519.02
    2170.02
    559.00
    2722.34
    0.64
    1.90
    190.00
    132.60
    133.12
    557.37
    518.20
    2166.58
    559.33
    2723.96
    0.62
    2.00
    200.00
    133.70
    134.29
    562.29
    517.40
    2163.23
    559.66
    2725.52
    0.60
    2.20
    220.00
    135.90
    136.55
    571.74
    515.84
    2156.74
    560.26
    2728.48
    0.57
    2.40
    240.00
    138.00
    138.70
    580.74
    514.36
    2150.53
    560.84
    2731.27
    0.54
    2.60
    260.00
    140.00
    140.75
    589.33
    512.93
    2144.55
    561.37
    2733.89
    0.51
    2.80
    280.00
    141.90
    142.72
    597.56
    511.55
    2138.80
    561.88
    2736.36
    0.48
    3.00
    300.00
    143.80
    144.60
    605.45
    510.22
    2133.24
    562.36
    2738.7
    0.46
    3.20
    320.00
    145.50
    146.42
    613.04
    508.94
    2127.87
    562.82
    2740.92
    0.44
    3.40
    340.00
    147.20
    148.16
    620.36
    507.69
    2122.67
    563.25
    2743.02
    0.42
    3.60
    360.00
    148.90
    149.85
    627.42
    506.48
    2117.61
    563.66
    2745.03
    0.40
    3.80
    380.00
    150.40
    151.48
    634.24
    505.31
    2112.70
    564.05
    2746.94
    0.39
    4.00
    400.00
    152.00
    153.06
    640.85
    504.17
    2107.92
    564.43
    2748.77
    0.37
    4.50
    450.00
    155.60
    156.80
    656.52
    501.43
    2096.49
    565.30
    2753
    0.34
    5.00
    500.00
    158.90
    160.29
    671.12
    498.85
    2085.70
    566.08
    2756.82
    0.32
    5.50
    550.00
    162.10
    163.56
    684.81
    496.41
    2075.47
    566.79
    2760.28
    0.29
    6.00
    600.00
    165.10
    166.64
    697.72
    494.07
    2065.72
    567.44
    2763.44
    0.27
    6.50
    650.00
    167.90
    169.56
    709.94
    491.84
    2056.39
    568.03
    2766.33
    0.26
    7.00
    700.00
    170.60
    172.33
    721.56
    489.70
    2047.43
    568.58
    2768.99
    0.24
    7.50
    750.00
    173.00
    174.98
    732.64
    487.64
    2038.81
    569.09
    2771.45
    0.23
    8.00
    800.00
    175.50
    177.51
    743.24
    485.65
    2030.49
    569.55
    2773.72
    0.22
    8.50
    850.00
    177.80
    179.94
    753.40
    483.72
    2022.43
    569.99
    2775.83
    0.20
    9.00
    900.00
    178.00
    182.27
    763.17
    481.85
    2014.63
    570.39
    2777.8
    0.19
    9.50
    950.00
    182.10
    184.52
    772.58
    480.04
    2007.05
    570.76
    2779.62
    0.19
    10.00
    1000.00
    184.20
    186.69
    781.66
    478.16
    1999.17
    571.11
    2781.33
    0.18
    10.50
    1050.00
    186.10
    188.78
    790.43
    476.56
    1992.49
    571.44
    2782.92
    0.17
    11.00
    1100.00
    188.00
    190.81
    798.93
    474.88
    1985.48
    571.75
    2784.41
    0.16
    11.50
    1150.00
    189.90
    192.78
    807.17
    473.24
    1978.63
    572.03
    2785.8
    0.16
    12.00
    1200.00
    191.70
    194.69
    815.17
    471.64
    1971.94
    572.30
    2787.11
    0.15
    12.50
    1250.00
    193.40
    196.55
    822.95
    470.07
    1965.38
    572.55
    2788.3
    0.15
    13.00
    1300.00
    195.10
    198.36
    830.52
    468.54
    1958.96
    572.79
    2789.48
    0.14
    13.50
    1350.00
    196.80
    200.12
    837.89
    467.03
    1952.67
    573.01
    2790.56
    0.14
    14.00
    1400.00
    198.40
    201.83
    845.08
    465.56
    1946.49
    573.22
    2791.57
    0.13
    14.50
    1450.00
    199.90
    203.51
    852.09
    464.10
    1940.42
    573.41
    2792.51
    0.13
    15.00
    1500.00
    201.50
    205.15
    858.95
    462.68
    1934.46
    573.59
    2793.4
    0.12
    15.50
    1550.00
    202.90
    206.75
    865.65
    461.27
    1928.59
    573.77
    2794.24
    0.12
    16.00
    1600.00
    204.40
    208.31
    872.20
    459.89
    1922.82
    573.93
    2795.02
    0.12
    17.00
    1700.00
    207.20
    211.35
    884.91
    457.19
    1911.53
    574.22
    2796.44
    0.11
    18.00
    1800.00
    209.90
    214.26
    897.12
    454.57
    1900.57
    574.47
    2797.68
    0.11
    19.00
    1900.00
    212.50
    217.07
    908.87
    452.02
    1889.89
    574.70
    2798.77
    0.10
    20.00
    2000.00
    214.90
    219.78
    920.22
    449.53
    1879.49
    574.89
    2799.71
    0.10
    21.00
    2100.00
    217.30
    222.64
    932.19
    447.10
    1869.32
    575.05
    2800.51
    0.09
    22.00
    2200.00
    219.60
    224.94
    941.82
    444.72
    1859.38
    575.20
    2801.2
    0.09
    23.00
    2300.00
    221.80
    227.40
    952.13
    442.39
    1849.65
    575.31
    2801.77
    0.08

    You can determine Steam Pressure based on Temperature basis, [what i mean is if you want to generate steam at required Temperature the below table can be used],

    Pressure
    Temprature
    Water(hf)
    Specific enthalphy
    Evaporation (hfg)
    Enthalphy of Steam(hg)
    Specific volume
    bar
    kPa
    C
    Kcal/Kg
    KJ/Kg
    Kcal/Kg
    KJ/Kg
    Kcal/Kg
    KJ/Kg
    m3/Kg
    0.006
    0.61
    0.01
    0.00
    0
    597.42
    2501.40
    597.42
    2501.40
    206.14
    0.008
    0.76
    3
    3.00
    12.57
    595.73
    2494.33
    598.73
    2506.90
    168.13
    0.009
    0.93
    6
    6.02
    25.2
    594.03
    2487.20
    600.05
    2512.40
    137.73
    0.011
    1.15
    9
    9.03
    37.8
    592.33
    2480.10
    601.36
    2517.90
    113.39
    0.014
    1.40
    12
    12.04
    50.41
    590.64
    2472.99
    602.67
    2523.40
    93.78
    0.017
    1.71
    15
    15.04
    62.99
    588.94
    2465.91
    603.99
    2528.90
    77.93
    0.021
    2.06
    18
    18.05
    75.58
    587.25
    2458.82
    605.30
    2534.40
    65.04
    0.025
    2.49
    21
    21.05
    88.14
    585.56
    2451.76
    606.62
    2539.90
    54.51
    0.030
    2.99
    24
    24.05
    100.7
    583.88
    2444.70
    607.93
    2545.40
    45.88
    0.032
    3.17
    25
    25.05
    104.89
    583.31
    2442.31
    608.36
    2547.20
    43.36
    0.036
    3.57
    27
    27.05
    113.25
    582.17
    2437.55
    609.22
    2550.80
    38.77
    0.042
    4.25
    30
    30.04
    125.79
    580.49
    2430.51
    610.53
    2556.30
    32.89
    0.050
    5.03
    33
    33.04
    138.33
    578.78
    2423.37
    611.82
    2561.70
    28.01
    0.059
    5.95
    36
    36.03
    150.86
    577.08
    2416.24
    613.11
    2567.10
    23.94
    0.074
    7.38
    40
    40.02
    167.57
    574.81
    2406.73
    614.83
    2574.30
    19.52
    0.096
    9.59
    45
    45.01
    188.45
    571.95
    2394.75
    616.96
    2583.20
    15.26
    0.123
    12.35
    50
    50.00
    209.33
    569.09
    2382.77
    619.08
    2592.10
    12.03
    0.158
    15.76
    55
    54.99
    230.23
    566.20
    2370.67
    621.18
    2600.90
    9.57
    0.199
    19.94
    60
    59.98
    251.13
    563.28
    2358.47
    623.26
    2609.60
    7.67
    0.250
    25.03
    65
    64.98
    272.06
    560.36
    2346.24
    625.34
    2618.30
    6.20
    0.312
    31.19
    70
    69.97
    292.98
    557.40
    2333.82
    627.37
    2626.80
    5.04
    0.386
    38.58
    75
    74.98
    313.93
    554.42
    2321.37
    629.40
    2635.30
    4.13
    0.474
    47.39
    80
    79.99
    334.91
    551.42
    2308.79
    631.41
    2643.70
    3.41
    0.578
    57.83
    85
    85.00
    355.9
    548.36
    2296.00
    633.37
    2651.90
    2.83
    0.701
    70.14
    90
    90.02
    376.92
    545.30
    2283.18
    635.32
    2660.10
    2.36
    0.846
    84.55
    95
    95.05
    397.96
    542.19
    2270.14
    637.23
    2668.10
    1.98
    1.014
    101.35
    100
    100.09
    419.06
    539.06
    2257.04
    639.14
    2676.10
    1.67
    1.208
    120.82
    105
    105.12
    440.15
    535.86
    2243.65
    640.98
    2683.80
    1.42
    1.433
    143.27
    110
    110.17
    461.3
    532.65
    2230.20
    642.82
    2691.50
    1.21
    1.691
    169.06
    115
    115.23
    482.48
    529.38
    2216.52
    644.61
    2699.00
    1.03
    1.985
    198.53
    120
    120.30
    503.71
    526.05
    2202.59
    646.36
    2706.30
    0.89
    2.321
    232.10
    125
    125.39
    524.99
    522.69
    2188.51
    648.08
    2713.50
    0.77
    2.701
    270.10
    130
    130.48
    546.31
    519.27
    2174.19
    649.75
    2720.50
    0.67
    3.130
    313.00
    135
    135.58
    567.69
    515.79
    2159.61
    651.37
    2727.30
    0.58
    3.163
    316.30
    140
    140.70
    589.13
    512.25
    2144.77
    652.95
    2733.90
    0.51
    4.154
    415.40
    145
    145.84
    610.63
    508.64
    2129.67
    654.48
    2740.30
    0.45
    4.758
    475.80
    150
    150.99
    632.2
    504.97
    2114.30
    655.96
    2746.50
    0.39
    5.431
    543.10
    155
    156.16
    653.84
    501.21
    2098.56
    657.37
    2752.40
    0.35
    6.178
    617.80
    160
    161.34
    675.55
    497.38
    2082.55
    658.73
    2758.10
    0.31
    7.005
    700.50
    165
    166.55
    697.34
    493.47
    2066.16
    660.02
    2763.50
    0.27
    7.917
    791.70
    170
    171.77
    719.21
    489.49
    2049.49
    661.26
    2768.70
    0.24
    8.920
    892.00
    175
    177.02
    741.17
    485.41
    2032.43
    662.43
    2773.60
    0.22
    10.021
    1002.10
    180
    182.28
    763.22
    481.25
    2014.98
    663.53
    2778.20
    0.19
    12.544
    1254.40
    190
    192.89
    807.62
    472.60
    1978.78
    665.49
    2786.40
    0.16
    15.538
    1553.80
    200
    203.59
    852.45
    463.52
    1940.75
    667.11
    2793.20
    0.13
    25.480
    2548.00
    225
    230.90
    966.78
    438.62
    1836.52
    669.52
    2803.30
    0.08
    39.730
    3973.00
    250
    259.22
    1085.36
    409.87
    1716.14
    669.09
    2801.50
    0.05
    59.420
    5942.00
    275
    289.01
    1210.07
    376.15
    1574.93
    665.15
    2785.00
    0.03
    85.810
    8581.00
    300
    320.99
    1344
    335.56
    1405.00
    656.56
    2749.00
    0.02




    I hope these tables will be useful to you while performing calculations, and also sometimes on production shop floor also.



    If any queries, feel free to comment,

    Comments are most appreciated..........!!!!


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    Hi! I am Ajay Kumar Kalva, Currently serving as the CEO of this site, a tech geek by passion, and a chemical process engineer by profession, i'm interested in writing articles regarding technology, hacking and pharma technology.
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    3 comments:

    1. Hi Ajay, please provide the height and diameter calculation for the packed bed distillation column. Given feed was ethyl acetate ML's 10 KL.

      Regards by
      T.V.RAMANA.

      ReplyDelete
      Replies
      1. Dear Ramana,

        Pl follow below link,
        http://pharmacalc.blogspot.com/2015/08/industrial-column-design-details-steps.html

        The calculation remains same, no. of trays = no. of packings,

        Usually we'll prefer packings because the contact time of vapour and liquid will increase, that's it...!!

        Regards,
        AJAY K

        Delete
      2. Dear Ajay, i knew the process for finding number of tryas for a distillation column by McCab and thiele process but i am confused with how my resultant number of trays equal to no.of packings. Here i noticed that my column only having 2 sections and each section having 4m height of structure packing bed. How to equivalent no of trays to packed bed height? clarify me...

        Regards by
        T.V.RAMANA

        Delete

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