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A solution of sugar in water is to be concentrated from 5wt% sugar to 20 wt%...

A solution of sugar in water is to be concentrated from 5wt% sugar to 20 wt% sugar. The solution is at 45C when it is fed continuously to an evaporator. Air at 45C with a dew point of 4C is used in the evaporator and emerges saturated. The humidification of the air may be considered adiabat.ic

a) What are the absolute humidities of the entering and exiting air?

b) How many kilogram of dry air must be fed per kilogram of the entering sugar solution?

c) What is the corresponding volume of the entering wet air?

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