# Calculate dry.. suspension with 50 kg steam. solved problem

#### Calculate the dryness fraction (quality) of steam which has 1.5 kg of water in suspension with 50 kg of steam.

Calculate the dryness fraction (quality) of steam which has 1.5 kg of water in suspension with 50 kg of steam.

1. A fluid at a pressure of 3 bar, and with specific volume of 0.18 m3/kg, contained in a cylinder behind the piston expands reversibly to a pressure of 0.06 bar according to a law, p = C/v2, where C is a constant. Calculate the work done by the fluid on the piston.

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2. A cylinder contains 1 kg of a certain fluid at an initial pressure of 20 bar. The fluid is allowed to expand reversibly behind a piston according to a law pV2 = constant until the volume is doubled. The fluid is then cooled reversibly at constant pressure until the piston regains its original position ; heat is then supplied reversibly with the piston firmly locked-in position until the pressure rises to the original value of 20 bar. Calculate the net work done by the fluid, for an initial volume of 0.05 m3.

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3. Calculate the dryness fraction (quality) of steam which has 1.5 kg of water in suspension with 50 kg of steam.

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4. A vessel having a volume of 0.6 m3 contains 3.0 kg of liquid water and water vapour mixture in equilibrium at a pressure of 0.5 MPa. Calculate :
(i) Mass and volume of liquid ;
(ii) Mass and volume of vapour.

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5. A vessel having a capacity of 0.05 m3 contains a mixture of saturated water and saturated steam at a temperature of 245°C. The mass of the liquid present is 10 kg. Find the following :
(i) The pressure, (ii) The mass, (iii) The specific uolun1e, (iv) The specific enthalpy, (v) The specific entropy, and (vi) The specific internal energy.

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