As an energy conservation measure in a chemical plant, a 40-m3 tank

will be used for temporary storage of exhaust process steam. This steam is then used in a later stage of the processing. The storage tank is well insulated and initially contains 0.02 m3 of liquid water at 50?C; the remainder of the tank contains water vapor in equilibrium with this liquid. Process steam at 1.013 bar and 90 percent quality enters the storage tank until the pressure in the tank is 1.013 bar. How many kilograms of wet steam enter the tank during the filling process, and how much liquid water is presente at the end of the process? Assume that there is no heat transfer between the steam or water and the tank walls.