Arigid tank with a volume of 1.0 m3 initially contains h2o at 0.07 mpa and 100°c. it is filled from a steam line at 0.70 mpa and 200°c. the tank is filled to a level of 90 % liquid on a volume basis. the tank is maintained at 100°c during the process. evaluate the required heat transfer (kj) to maintain the tank at the constant temperature.