Select the lightest
available w14 section for column tosupport the axial
compression loads pd=150k and pl=200 k if kl =14ft and a572 grade
50 steel is used. column is assumed to be inframe that is braced
against side-sway. use trial and error methodin which a kl/r value
is estimated. solution should have requiredareas calculated, trial
section selected checked revised ifnecessary.

An open feedwater heater operates at steady state with liquid entering at inlet 1 with t? = 40°c and pl = 1 .2 mpa. water vapor att2-200°c and p2 = 1.2 mpa enters at inlet 2. saturated liquid water exits with a pressure of pa 1.2 mpa. neglect heat transfer with the surroundings and all kinetic and potential energy effects, determine the mass flow rate of steam at inlet 2 if the mass flow rate of liquid water at inlet 1 is given as 2 kg/s.