Firefighters are holding a nozzle at the end of a hose while trying to extinguish a fire. the nozzle exit diameter is 8 cm, and the water flow rate is 16 m3/min. take the density of water as 1000 kg/m3 and the momentum-flux correction factor as unity.

For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater