Steam flows into a reducing valve with a pressure of 1400kpa+ dryness fraction ).98. It leaves the valve with a pressure of 150kpa.
What diameters of inlet and outlet pipes would be required for a flow of 2270kg per hour with a velocity of 15m/s both before and after the reducing valve?
Assume no losses+ enthalpy per kg steam before throttling = enthalpy after.
Assume also that the specific heat of superheated steam at 150kpa is 2KJ/deg celsius.