For a shell-and-tube heat exchanger in which the flow is turbulent in both the shell and tube sides, how does the film heat transfer coefficient change with a 50% increase in the mass flow rate for the (a) shell side, (b) tube side

Which one from below is not one of the reasons of planning failures? (clo3) a)-planner is careless. b-planner spend less time in the field but more time on the desk c)-planner is not qualified d)-planner does not have sufficient time to properly plan