Determine the amount of heat, which should be supplied to 2 kg of water at 25°C to convert it into steam at 5 bar and 0.9 dry.
Determine the amount of heat, which should be supplied to 2 kg of water at 25°C to convert it into steam at 5 bar and 0.9 dry.
1. 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.
2. 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.
3. Determine the amount of heat, which should be supplied to 2 kg of water at 25°C to convert it into steam at 5 bar and 0.9 dry.
4. What am0unt of heat would be required to produce 4.4 kg of steam at a pressure of 6 bar and temperature of 250°C from water at 30°C ? Take specific heat for superheated steam as 2.2 kJ / kg K.
5. Determine the mass of 0.15 m3 of wet steam at a pressure of 4 bar and dryness fraction 0.8. Also calculate the heat of 1 m3 of steam.
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