A double-effect evaporator is being used to concentrate a liquid food from 5 to 35% total solids….

A double-goods evaporator is entity used to draw a liquid foundation from 5 to 35% entirety solids. The drawd result leaves the avoid goods at a scold of 1000kg/h. The juice enters the fi rst goods at 60°C. Saturated steam at 169.06kPa is suited. Assume the areas in each goods are resembling and the evaporation sphere internally the avoid goods is 40°C. The overall heat-transfer coeffi cient internally the fi rst goods is