A dilute solution is subjected to flash distillation. The solution is heated in a
heat exchanger and then flashes in a vacuum vessel. If heat at a rate of
270000 kJ/h is transferred to the solution in the heat exchanger, calculate:
a) the temperature of the solution at the exit of the heat exchanger, and b) the
amount of overhead vapor and residual liquid leaving the vacuum vessel. The
following data are given: Flow rate and temperature of the solution at the inlet
of the heat exchanger is 1000 kg/h and 50'C, heat capacity of the solution is
3.8 kJ/kg'C, and absolute pressure in the vacuum vessel is 70.14 kPa.