Each kg of dough takes 11 W h to develop into a gas holding structure. 50...
Each kg of dough takes 11 W h to develop into a gas holding structure. 50 % of this work input is dissipated as heat.
What is the temperature rise in the dough leaving the mixer if 830 kg of dough ingredients are fed into the mixer?
– Heat capacity of dough is 2.5 kJ /kg
Homework Answers
Heat given to change temperature = m*S*deltaT
830*11*0.50*3600 = 830*2.5e3*deltaT
deltaT = [ 830*11*0.50*3600]/( 830*2.5e3)
= 7.92 K answer
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Each kg of dough takes 11 W h to develop into a gas holding structure. 50...
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coal is fed at a rate of 40000 kg/h and has an ultimate analysis of
76wt% C, 5wt% H, 8wt% O, negligible amounts of N and S, and 11wt%
non-combustible ash. Air enters a preheater at 30 °C and 1 atm with
a relative humidity of 30%, exchanges heat with the hot flue gas
leaving the furnace and air enters the furnace at temperature Ta
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