Arigid, 12-l steam cooker is arranged with a pressure relief valve set to release vapor and maintain the pressure once the pressure inside the cooker reaches 150 kpa. initially, this cooker is filled with water at 175 kpa with a quality of 10 percent. heat is now added until the quality inside the cooker is 40 percent. determine the minimum entropy change of the thermal energy reservoir supplying this heat. use steam tables. the minimum entropy change of the thermal energy reservoir is?

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.