# Question: a feed of 4535 kgh of a 20 wt salt...

###### Question details

A feed of 4535 kg/h of a 2.0 wt% salt solution at 311 K enters
continuously a single-effect evaporator and is being concentrated
to 3.0%. The evaporation is at atmospheric pressure and the area of
the evaporator is 69.7 m^{2}. Saturated steam at 383.2 K is
supplied for heating. Since the solution is dilute, it can be
assumed to have the same oiling point as water. The heat capacity
of the feed can be taken as *c _{p}*=4.10 kJ/kg×K.
Calculate the amounts of vapor and liquid product and the overall
heat-transfer coefficient

*U*.