Your boss tells you that water at 59 f is flowing in a cooling tower loop at a rate of 640 gpm, in an 10-inch inside diameter pipe. your boss asks you whether this flow is the laminar or turbulent flow regime. calculate the reynolds number and state whether the flow is laminar or turbulent. #3: what is the horsepower requirement for a water pump, if the required flow rate is 80 gpm and the required pressure increase assigned to the pump is 45 psi? #4: what is the amount of energy given up by 225 kgs of methanol that is initially at a saturated vapor condition (1 atm and 79 °c), if the methanol is condensed and subcooled (temperature below its boiling point) to a temperature of 20 °c (still at pressure of 1 atm)? give your answer in units of btu and joules. #5: in a refinery, a heat exchanger is used to cool a hot stream of fuel oil from 140 °c down to 50 °c, using water as the coolant. the cooling water comes into the heat exchanger at 10 °c and exits at 40°c. consider the flow of the gasoline stream to be 500 kg/min, and thus the total heat duty for this exchanger is approximately 18,400 kjoules/minute. what is the size (area in square meters) of this heat exchanger? do this for both counter-current operation and co-current operation. to complete this calculation, you need an overall heat transfer coefficient, u, for this heat exchanger. i am not expecting you to calculate a value of u, but rather to find a suitable value of u in a table from a trusted source. you must cite what source you used for this value of u. what is your calculated value of lmtd? #5a. sketch the hot and cold side temperature profiles (graph of t vs distance along tubes) of this heat exchanger if it is operated in co-current flow mode. #sb. sketch the hot and cold side temperature profiles (graph of t vs distance along tubes) of this heat exchanger if it is operated in counter-current flow mode.