Problem 5 A brine circulation MSF system operates at the following conditions:

- Feed salinity = 34000 ppm

- Feed temperature = 25 ^C

- Heating steam temperature = 100 ^C

- Production capacity = 1 kg/s

- Brine blowdown temperature = 35 ^C

- Top brine temperature = 90 ^C

- Terminal temperature difference in the condenser = 3 ^C

- Thermodynamic losses = 1.5 ^C

Calculate the system performance parameters for the following conditions: a) Number of stages 40 with 3 stages in the heat rejection section.

b) Number of stages 19 with 3 stages in the heat rejection section.