It is desired to concentrate a 20% salt solution (20 kg of salt in 100 kg of solution) to a 30% salt solution in an evaporator. Consider a feed of 300 kg/min at 30¬¨‚àûC. The boiling point of the solution is 110¬¨‚àûC, the latent heat of vaporisation is 2100 kJ/kg and the specific heat of the solution is 4 kJ/kg.K. The rate at which the heat has to be supplied in (kJ/min) to the evaporator is$

It is desired to concentrate a 20% salt solution (20 kg of salt in 100

1.	It is desired to concentrate a 20% salt solution (20 kg of salt in 100 kg of solution) to a 30% salt solution in an evaporator. Consider a feed of 300 kg/min at 30¬¨‚àûC. The boiling point of the solution is 110¬¨‚àûC, the latent heat of vaporisation is 2100 kJ/kg and the specific heat of the solution is 4 kJ/kg.K. The rate at which the heat has to be supplied in (kJ/min) to the evaporator is$
A.	3.06 x l0‚Äö√Ö¬µ
B.	6.12 x 10‚Äö√Ö¬µ
C.	7.24 x 10‚Äö√Ö¬µ
D.	9.08 x 10‚Äö√Ö¬µ
Answer» B. 6.12 x 10‚Äö√Ö¬µ