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14 April, 19:59

A 200‑m rigid vessel contains a saturated liquid‑vapor mixture with a vapor quality of 75%. The temperature of the vessel is maintained at 393°K. What is the total mass of the liquid‑vapor mixture inside the vessel?

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  1. 14 April, 20:47
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    Given,

    Temperature;

    T = 393;; K

    Convert to Celcius;

    T = (393-273) degrees

    T = 120°C

    Using Table A-4 (Saturated water - Temperature table), at T = 120 C;

    vf = 0.001060 m³/kg

    vg = 0.89133 m³/kg

    Quality is given as;

    75% = 0.75

    Specific volume is given as;

    v = vf + x (vg - vf) = 0.001060 + 0.75 (0.89133 _ 0.001060)

    v = 0.66876 m³/kg

    We know;

    v = V/m

    0.66876 = 100/m

    m = 149.53 kg
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