For the reaction and data in P6-4 B , we now consider the case when the reaction is reversible with K C = 0.025 dm 6 /mol 2 and the reaction is carried out at 300 K in a membrane reactor where C 2 H 6 is diffusing out. The membrane transport coefficient is k C = 0.08 s – 1 . (a) What is the equilibrium conversion and what is the exit conversion in a conventional PFR? (b) Plot and analyze the conversion and molar flow rates in the membrane reactor as a function of reactor volume up to the point where 80% conversion of di-tert-butyl peroxide is achieved. Note any maxima in the flow rates.

Along 8-cm diameter steam pipe whose external surface temperature is 900c connects two buildings. the pipe is exposed to ambient air at 70c with a wind speed of 50 km/hr blowing across the pipe. determine the heat loss from the pipe per unit length. (b) air at 500c enters a section of a rectangular duct (15 cm x 20 cm) at an average velocity of 7 m/s. if the walls of the duct are maintained at 100c. a) the length of the tube for an exit temperature of the air to be 40 0c. b)the rate of heat transfer from the air. c) the fan power needed to overcome the pressure drop in this section of the duct.

In general, how do thermosetting plastics compare to thermoplastics in mechanical and physical properties?

The proportional limit is always greater than the yield strength for a material. a)-trune b)- false