Flue passing hot exhaust gases has a square cross section, 400 mm to a side. The walls are constructed of refractory brick 200 mm thick with a thermal conductivity of 1.5 W/mK. Calculate the rate of heat loss from the flue per unit length when the interior and exterior surfaces are maintained at 350 and 25oC, respectively. Use a grid spacing of 100 mm

Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false

Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.

True or false (explain) (110)[111] is a slip system in bcc metals . the {111} family in fcc contains 8 planes. resolved shear stress (rss) in single crystals is just related to the applied stress. critical resolved shear stress (crss) in single crystal metals is direct proportional to the number of defects in the structure