A continuous single - effect evaporator concentrates 120 kg/min of a 2 wt% sugar solution entering...

 

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A continuous single - effect evaporator concentrates 120 kg/min of a 2 wt% sugar solution entering at 70\deg C to a final concentration of 3.5 wt%. The vapor space of the evaporator is at 1 atm and the steam supplied is saturated steam at 143.3 kPa. The overall heat transfer coefficient is U = 1704 W/m2K and heat capacity of water is 4.2 kJ/kgK. Calculate the required heat transfer area. Assume that since the sugar solution is dilute, the properties of the solution can be taken to be the same as those of water. a-65 b-95 c-105 d-125 e-145 A continuous single - effect evaporator concentrates 120 kg/min of a 2 wt% sugar solution entering at 70\deg C to a final concentration of 3.5 wt%. The vapor space of the evaporator is at 1 atm and the steam supplied is saturated steam at 143.3 kPa. The overall heat transfer coefficient is U = 1704 W/m2K and heat capacity of water is 4.2 kJ/kgK. Calculate the required heat transfer area. Assume that since the sugar solution is dilute, the properties of the solution can be taken to be the same as those of water. a-65 b-95 c-105 d-125 e-145

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The detailed answer for the above question is provided below SOLUTION To calculate the required heat transfer area we need to use the energy balance equation for the evaporator Qin Qout U A T where Qi... View the full answer