1.A rectangular channel 50 ft wide (n=0.015) carries a flow of 375 cfs. For the flow find the critical depth and critical velocity
2.Water flows down a wide and shallow rectangular channel of concrete (n=0.015) laid on a slope of 0.004. find the depth and the rate of flow in SI units for critical conditons in the channel.
3.The composition of a stream leaving a fermenter is 85.0 mol % water (H2O, MW = 18.01), 10.0 mole % ethanol (C2H5OH, MW = 46.07), and 5.0 mol % sucrose (C6H12O6, MW =180.16).
a) Calculate the stream composition weight %.
b) 850 lbm/h of the stream is fed to a purification process. 95% of the ethanol is recovered as product. Calculate the tons/year of recovered ethanol.