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A thin-walled container with a hot process fluid at 50°C is placed in a quiescent, cold water bath at 10°C. Heat transfer at the inner and outer surfaces of the container may be approximated by free convection from a vertical plate.
(a) Determine the overall heat transfer coefficient between the hot process fluid and the cold water bath. Assume the properties of the hot process fluid are those of water.
(b) Generate a plot of the overall heat transfer coefficient as a function of the hot process fluid temperature T∞,h for the range 20 to 60°C, with all other conditions remaining the same.
Consider a sample of thickness L = 25 mm and a square planform of width W = 250 mm. In an experiment per- formed under steady-state conditions, temperature mea- surements made at the lower and upper surface of the sample yield values of T1 = 150°C..
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Air at 90 kpa and -7 C enters an adiabatic diffuser steadily with a velocity of 180 m/s and leaves with a low velocity at a pressure of 100 kpa. The exit area of the diffuser is 5 times the inlet area. Determine (a) the exit temperature and (b) th..
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An equilibrium mixture at 2000 K, 1 atm consists of Cs, Cs1, and e2. Based on 1 kmol of Cs present initially, determine the percent ionization of cesium. At 2000 K, the ionization- equilibrium constant for Cs dS Cs1 1 e2 is K 5 15.63.
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