In the given system, process stream is heated to a specific temperature and after heating it is sent to another process. Process stream is fed to the system at 20C and with 20 m3 /h flow rate. Volume of the tank is 100 m3 . Density of fluid is 1000 kg/m3 , heat capacity is 0.8 kcal/kg, flow rate of saturated steam is 1000 kg/h and saturated steam enthalpy is 640 kcal/kg. It is known that the heat capacity and density are constant during the heating process. a) What is the fluid temperature exit of the tank when the process is at steady state? (F=F0) b) Find the fluid temperature at 5, 10 and 15 h if the fluid temperature is increased suddenly to 50C. c) Flow rate of the saturated steam is decreased to 500 kh/h due to a technical fault. This fault is noticed after 10 h and flow rate is increased again to 1000 kg/h. Find the fluid temperature at time 5, 10 and 15 h?