Engineering, 13.12.2019 21:31 dumngirl2504

At krispy kreme the process for sugar coating donuts by the sugar-waterfall donut coater involves a flow of uncoated donuts into the donut coater and the output consists of the sugar coated donuts. the coater also receives an inflow of sugar suspension which coats the donuts. the unused sugar suspension is recycled to a mixer which is positioned ahead of the donut coater. an input pipe goes into the mixer and supplies sugar suspension which replaces the sugar that coats the donuts and leaves the system. the flow rate of donuts into the coater is 1200 donuts/hr and each uncoated donut weights approximately 110 g. 12 kg/h of sucrose suspension leaves the system when the donuts are coated but most of the sugar is recycled through the mixer. the mixer output stream of sucrose suspension has a mass flow rate of 126 kg/hr.

a. create a process flow diagram of the donut coater system described above, labeling the input mass flow of sugar suspension as m1 and the output flow of coated donuts as m2, and the recycle flow as m3. label the output mass fractions of donuts and sugar suspension using as few variables as possible. (5 points)
b. what is the mass flow of coated donuts? (5 points)
c. what is the mass flow of input sugar suspension (5 points)
d. what is the mass flow of the recycled sugar suspension (5 points)
e. what is the mass fraction of sugar suspension on the coated donuts? (5 points)

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At krispy kreme the process for sugar coating donuts by the sugar-waterfall donut coater involves a...

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