Engineering, 22.11.2019 06:31 Hfruit

Glycerin is being heated by flowing between two very thin parallel 1-m-wide and 10-m-long plates with 12.5-mm spacing. the glycerin enters the parallel plates with a temperature 20°c and a mass flow rate of 0.7 kg/s . the outer surface of the parallel plates is subjected to hydrogen gas (an ideal gas at 1 atm) flow width-wise in parallel over the upper and lower surfaces of the two plates. the free-stream hydrogen gas has a velocity of 3 m/s and a temperature of 150°c. determine the outlet mean temperature of the glycerin, the surface temperature of the parallel plates, and the total rate of heat transfer. evaluate the properties for glycerin at 30°c and the properties of h2 gas at 100°c. are these good assumptions?

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