Calculate pressure at the mid-plane of an annular cylinder of iron powder pressed using double-action press. The punch pressure (i. e., applied pressure) is 100 MPa when the height of the pressed sample is 10 cm. The coefficient of friction is 0.1, radial-to-axial pressure ratio is 0.4, and the wall thickness of the annular compact is 2 cm.

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