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Species A is evaporating from a flat surface into species
B. Assume that the concentration profile for species A in the concentration boundary layer is of the form CA( y) = Dy2 + Ey + F, where D, E, and F are con- stants at any x-location and y is measured along a nor- mal from the surface. Develop an expression for the mass transfer convection coefficient hm in terms of these constants, the concentration of A in the free stream CA,oo and the mass diffusivity DAB. Write an expression for the molar flux of mass transfer by con- vection for species A.
steam enters the turbine of a cogeneration plant at 7 mpa and 500 degc. one quarter of the steam is extracted from the
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given a rectangular sample of ductile iron 60-40-18 with cross sectional dimensions 0.8 in x4 in calculate the stress
an air conditioning system is designed for a zone with a high dehumidification demands and humid outdoor conditions.
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Hydrogen flows through a horizontal insulated duct. At section1 the enthalpy is 2400 btu/lbm, the density is .5 lbm/ft^3 and the velocity is 500 ft/sec. at at downstream section, h2= 2240 btu/lbm and density2= .1 lbm/ft^3. No shaft work is done. Dete..
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The room air at 20oC that was trapped in the glass gets heated up to 40oC and some of it leaks out so the net resulting pressure inside is 2 kPa above ambient pressure of 101 kPa. Now the glass and the air inside cools down to room temperature, wh..
Write down the transfer function of a third-order system with unity steady-state gain which has a real pole at s = -1 and a pair of complex poles at s = -1 +- ja. Simulate the open-loop step response of the system for 'a' values of 1, 2, 4, and 10, a..
air is enclosed by a rigid cylinder containing a piston. a pressure gage attached to the cylinder indicates an initial
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air enters the compressor of an air-standard brayton cycle at 100kpa 300k with a volumetric flow rate of 5m3s. the
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