. In a shell-and-tube heat exchanger, initially ho = 320 W/mK and h = 1600 W/mK. The fouling resistances and wall resistance may be assumed to be negligible. If the mass flowrate of the tube-side stream is increased by 30%, what change in the mass flowrate of the shell-side stream is required to keep the overall heat transfer coefficient constant? (10 marks) (Hint: think about how film heat transfer coefficients and mass flows are related and use base case ratios)