Homework Answers
SOLUTION.
To find = state/phase of water for Given specifications .
Explanation =
Steam table will tell us about this.
Case -1
P = 1800 lbf /inch²
v =sp volume=0.0.3 ft3/lbm.
The given state is MIXURE Saturated liquid and vapor. i.e wet Steam.
Case -2
P =150 lbf/inch²
T = 320 F
The water is at compressed liquid at this Conditions.
Because water with P =150 psi has saturation temp =357 °F
Since water is 7°F below the saturation temp it is sub saturated or compressed liquid.
Case-3
T =380° F
v = 3ft ³/lbm
The water is superheated steam at this conditions.
Case -4
P =2 lbf/inch²
T =50°F
The water is compressed liquid at this state because the sat pressure is 0.178 Psi at 50°F
Since saturation pressure is less than operating Pressure water is compressed liquid.
Case -5;
T =270 F
P=30 lbf/inch²
The state is superheated steam .
Case -6
T =160
v =10 ft³/lbm
The water is mixure of vapor and the liquid .
Thus it is wet steam.
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