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A rigid tank whose volume is 0.5 m3, initially containing ammonia at 20oC, 1.5 bar, is connected by a valve to a large supply line carrying ammonia at 12 bar, 60oC. The valve is opened only as long as required to fill the tank with additional ammonia, bringing the total mass of ammounia in the tank to 143.36 kg. Finally, the tank holds two-phase liquid-vapor micture at 20oC. Determine the heat transfer between the tank contents and the surroundings, in kJ, ignoring kinetic and potential energy effects.
consider a wind turbine with a 90-m blade span subjected to 25-kmh steady winds. if the combined turbine-generator
two tanks containing air are connected via a valve. the first tank is 0.5 m3 and contains air at t 25 oc and p 500
calculate the rate of heat loss through the vertical walls of a boiler furnace 4m by 3m by 3m high.the walls are
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steam flows steadily through an adiabatic turbine. the inlet conditions of the steam are 10 mpa 450 c and 80 ms and the
a piston held by a pin in an insulated cylinder shown in figure above right contains 2 kg water at 100c quality 98. the
You are to supply a design for an engine room crane which will provide maintenance support for the main engine. Your design should include the rails the crane will sit on.
refrigerant-134a enters the evaporator coils placed at the back of the freezer section of a household refrigerator at
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a molybendenum metal pin is 25 mm long and 2mm in diameter. the air surrounding the pin is 200 degrees c the walls of
incoming air flow of 200 m3h at a temperature of 20oc and a humidity ratio of 0.012 kgvkga is mixed in a chamber with
horizontal stresses are estimated for a rock formation field in the gulf of mexico in depth of 5000 ft. as 6 ksi. it is
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