A spherical Pyrex glass shell has inside and outside diameters of 0.1 m and 0.2 m, respectively. The inner surface is at 100C while the outer surface is at 45 C. (a) Determine the temperature at the midpoint of the shell thickness at radial location of 0.075 m). (b) For the same surface temperatures and dimensions as in part (a), will the midpoint temperature decrease/increase if the shell material were aluminum

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

Carbon dioxide gas expands isotherm a turbine from 1 mpa, 500 k at 200 kpa. assuming the ideal gas model and neglecting the kinetic and potential energies, determine the change in entropy, heat transfer and work for each kilogram of co2.

Draw the engineering stress-strain curve for (a) bcc; (b) fcc metals and mark important points.