Initially, inside a rigid cylinder, there is a certain amount of mass M of superheated water vapor at T1=250deg C and p1=1MPa with its initial specific internal energy u1. The circular lids of the cylinder are adiabatic, while the side wall is not. A metal coil is placed that absorbs the heat from the cylinder until the substance inside it reaches a final temperature T2=125deg C and a specific internal energy u2. The volume of the cylinder is 0.23275 m^3

a) If there is no loss of energy when the coil absorbs heat, express the heat expelled by the substance as a function of M, u1, u2.

b) Find the specific volume v1 and the specific energy u1

c) Find the mass M

d) The value of the heat expelled by the substance if the quality in the final state is x2=0.3011

 

Answer rating: 100% (QA)

SOLUTION Heres the stepbystep solution to the problem a Heat expelled by the substance First we need to find the amount of heat absorbed by the metal coil Since the coil is adiabatic no heat is lost t... View the full answer