Question
A single effect evaporator is supplied with a feed of 2500 kg/h of a 1.6 % solution of sugar in water at a temperature of
A single effect evaporator is supplied with a feed of 2500 kg/h of a 1.6 % solution of sugar in water at a temperature of 14C. The product has a concentration of 6.5 % sugar in water. The evaporator operates at a pressure of 0.95 bar (absolute). The service steam is supplied at a pressure of 450 kPa (gauge). Atmospheric pressure is 100 kPa. Assume the enthalpy of sugar is the same as water. Assume no energy losses. Based on this information the following can be determined about the system (fill in blanks):
The required flow rate, in kg/h, of the service steam (S) is:
The Steam Economy (%) for this evaporator is:
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