I’m working on a mechanical engineering multi-part question and need guidance to help me understand better.
Assume that the reactor pressure decreases in pressure to 50% of the original value (Initial reactor pressure is 2298PSIG). Calculate the change in flow and motor horsepower for each 5% of pressure decrease. (Hint: The classic centrifugal pumps laws do not work. An electrically driven pump with an induction motor will run at a constant speed and its flow and power requirement will both increase as back pressure the pump decreases. Pump speed remains constant.) Assume 100% pump efficiency. The initial pump flow rate is 853.5GPM and the initial pump discharge pressure is 287.4PSIG.