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20 August, 06:23

Steam enters an insulated turbine at 100 bar, 400oC. At the exit, the pressure and quality are 200 kPa and 0.47, respectively. Determine the power produced (kW) by the turbine if the mass flow rate is 1.99 kg/s.

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  1. 20 August, 06:35
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    power produced = 3098.52 kW

    Explanation:

    given data

    insulated turbine = 100 bar

    temperature = 400°C

    pressure = 200 kPa

    mass flow rate = 1.99 kg/s

    solution

    we use here steam table for At 100 bar and 400°C

    h1 = 3096.5 KJ/Kg

    and

    at P2 = 200 Kpa

    h2 = hf + 0.47 hg

    h2 = 504.7 + 0.47 * 2201.6

    h2 = 1539.452 KJ/Kg

    so here

    power produced is express as

    power produced = m * (h1 - h2) ... 1

    power produced = 1.99 * (3096.5 - 1539.452)

    power produced = 3098.52 kW
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