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A 2 cm-thick composite plate has electric heating wires arranged in a grid in its centerplane. On one side there is air at 20 degrees Celcius, and on the other side there is air at 100 degrees Celcius. If the heat transfer coefficient on both sides is 40 [W/(m^2)-K], what is the max allowable rate of heat generation per unit area if the composite temperature should not exceed 300 degrees Celcius? Take k = .45 [W/m-K] for the composite material.
a balloon in the upper atmosphere is filled with water vapor with a speci?c volume of 10 m3 kg. a if its volume is 25
water is the working fluid in a regenerative rankine cycle with one closed feedwater heater and one open feedwater
1 a vapor power plant operates with water as the working fluid passing through the cycle at a flow rate of 12 kgs. in
a mercury manometer ?13600 kgm3 is connected to an air duct to measure the pressure inside. the difference in the
assume that a drop of mercury is an isolated sphere. what is the capacitance of a drop that results when 10 drops each
Determine the resulting change
the steam at the inlet is 20 bar absolute with superheat of 135 c . the steam at the outlet is 1 bar absolute and 100
Find the safe applied torque that can be transmitted by the shaft ABCD, if the maximum shear stress in the hollow section is 47 MPa and G = 82.5 GPa.
a spherical underwater instrument pod used to make soundings and to measure conditions in the water has a diameter of
a a rod of steel 0.5 m long is heated from 20 c to 80 c while its ends are maintained rigid. determine the type and
a transistor in a stereoamplifier dissipates 0.4 w within a housing that is cylindrical radius 8 mm and height 8 mm.
viscours fluid occupies the region 0ltzlth between two rigid boundaries z0 and zh. the lower boundary is at rest the
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