A0.2-m^3 rigid tank equipped with a pressure regulator contains steam at 2mpa and 320c. the steam in the tank is now heated. the regulator keeps the steam pressure constant by letting out some steam, but the temperature inside rises. determine the amount of heat transferred when the steam temperatures reaches 540c.

Asteam is contained in a rigid tank with a volume of 1 m3. initially, the pressure and temperature are 7 bar and 500 oc, respectively. the temperature drops due to cooling process. determine: (1) the temperature at which condensation begins in °c, (2) the fraction of the total mass that has condensed when the pressure decreased to 0.5 bar. (3) the volume in m3 occupied by saturated liquid at the final state?