b) You are a Projects Manager in a sugar processing plant and you have been asked to come up with a comprehensive design of an evaporator to upgrade on the current piece of equipment. The unit being designed is for the concentration of sucrose juice from the juice heaters with an initial solids composition of 8%. Evaporation will be accomplished under vacuum corresponding to an absolute pressure of 70.14kPa. Saturated steam is available at 617.8kPa and the product is being concentrated to 50% solids. The specific heat of the feed is 3.77kJ/kgC, while that of the concentrated product is 3.35kJ/kgC. The overall heat transfer coefficient is assumed constant at 1.8kW/m2C. Given that the feed temperature is 25C and that the feed rate is 0.75kg/s, determine the product flow rate, steam consumption rate, steam economy and the heat transfer area for the new unit