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Water has a critical specific volume of 0.003155 m3/kg. A closed and rigid steel tank of volume 0.025 m3 contains a mixture of water and steam at 0.1 MPa. The mass of the mixture is 10 kg. The tank is now slowly heated. The liquid level inside the tank
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- will rise
- will fall
- will remain constant
- may rise or fall depending on the amount of heat transferred
Correct Option: A
vc = 0.0031 m3 /kg
| v2 = | = 0.0025 m3/kg | 10 |
as (vc > v)
As heat is supplied the amount of st eam in mixture will decrease and pressure will increase, because volume of mixture is less than critical vol ume. The fi nal st at e wi l l move t owar ds saturated liquid line. Hence level of liquid in tank will rise.
