Given water in a closed system at a temperature of T1 and qu

Given water in a closed system at a temperature of T1 and quality equals 0.5. The pressure will be:

a. Less than saturation pressure at T1

b. Greater than saturation pressure at T1

c. Equal to saturation pressure at T1

d. Another property is required before a pressure can be determined.

Solution

Ans :- c

The pressure will be equal to saturation pressure at T1.

Generally water converts from saturated liquid to saturated vapour at constant pressure and constant temperature.Here this transformation will have only one degree of freedom. If pressure is given then the temperature of mixture is equal to saturation temperature at that pressure. If temperature is given then the pressure of mixture is equal to saturation pressure at that temperature. Here quality is given as 0.5 . So mixture will have saturation pressure at temperature T1.