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An inward radial flow turbine is to develop 400 hp when supplied with air at 800C and 3 bar (abs), the exhaust total pressure being 1.07 bar. The total head isentropic efficiency is 80% and the speed 25000 rpm. The vanes reduc the nominal flow area by 10% and are radial at inlet but twisted at exhaust to give zero swirl. Determine the rotor diameter and the nozzle angle if the vane width is 12.7 mm, clearly indicating the assumptions made. For the gas assume, Cp= 1.13 kJ/kgC and sp. Heat ratio = 1.33.
assume air flows isentropically through a converging-diverging nozzle. at station 1 which is aft of the throat and has
a rigid tank contains 5 kg of refrigerant-134a initially at 20degc and 140 kpa. the refrigerant is now cooled while
a nozzle receives 0.1 kgs steam at 1 mpa 400oc with negligible kinetic energy. the exit is at 500 kpa 350oc and the
a power cycle operates between a high temperature reservoir at th k and a low temperature reservoir at tc 280 k. at
Describe the four incorrect assumptions concerning robot - arm movement that are most frequently responsible for impact accidents.
hydrogen at 25 bar 450degc enters an adiabatic turbine and expands to 2 bar 160degc with a mass flow rate of 0.2 kgs.
a simple steam power system has a turbine inlet state of 6.0 mpa and 540 0c and an exhaust pressure 0.008 mpa. the
a 2.5 m tall steel cylinder has a cross sectional area of 1.5 m2 . at the bottom with a height of 0.5 m is liquid water
15 kilograms of water are confined in a rigid vessel with a volume of 0.5 m3 with an intitial temperature of 50
atmospheric air at 95 kpa 30 degrees celcius and 75 humidity is to be conditioned at constant pressure so that it
a16 lb bowling ball is rolling with a velocity of 20 fts toward a ramp that is inclined at 20 degrees to the
the concentration of oxygen dissolved in both arterial and venous blood can be determined using henry law pihici. where
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