Ahollow spherical iron container with outer diameter 20 cm and thickness 0.2 cm is filled with iced water at 0°c. if the outer surface temperature is 5°c, determine the approximate rate of heat loss from the sphere, in kw, and the rate at which ice melts in the container. the heat of fusion of water is 333.7 kj/kg.

An open feedwater heater operates at steady state with liquid entering at inlet 1 with t? = 40°c and pl = 1 .2 mpa. water vapor att2-200°c and p2 = 1.2 mpa enters at inlet 2. saturated liquid water exits with a pressure of pa 1.2 mpa. neglect heat transfer with the surroundings and all kinetic and potential energy effects, determine the mass flow rate of steam at inlet 2 if the mass flow rate of liquid water at inlet 1 is given as 2 kg/s.