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A device with no moving parts provides a steady stream of chilled air at -25C and 1 bar. the feed to the device is compressed air at 25C and 5 bar. In addition to the stream of chilled air, a second stream of warm air flows from the device at 75C and 1 bar. Assume adiabatic operation, what is the ratio of chilled air to warm air that the device produces? Assume that air is an ideal gas for which Cp= (7/2)R.
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A flywheel can be considered as being composed of a thin disc and a rim. The rim weighs 322 lb and has diameters of 24 in. and 30 in. The disc weighs 64.4 lb. Determine the mass moment of inertia about the centroidal axis about which the flywheel ..
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