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Determine the heat transferred and the work done (both in kJ/kg) when saturated water vapor in a closed system is condensed by cooling it to saturated liquid at constant pressure of 40 kPa.
two boxes made of the same material have the same masses but their dimensions are different. the bases of the boxes in
the average idle human releases about 116 w of power which corresponds to a daily consumption of 2400 calories. at
a cutting tool uses a nozzle that generates a high speed jet of liquid water water temperature 20 degc. assume an exit
A 10 kW electric heater is used to heat 2 kg of air contained in an insulated rigid tank from 400 kPa and 50 °C to 200 °C. The ambient air temperature and pressure is 20 °C and 100 kPa, respectively.
a wire of radius r length l and initial temperature ti is cooled by a fluid of temperature tf at time t0. the heat
a brayton cycle gas turbine delivers power to an electric generator at 150 mw. the minimum nbsptemperature in the cycle
two kilograms of water fills a 0.1 m3 rigid tank the volume will not change at an initial pressure of 2mpa. the
air is expanded in a polytropic process with n 1.5 from 2 mpa and 300 degrees celcius to 80 kpa in a piston-cylinder
consider a concentric tube annulus for which the inner and outer diameter are 25 and 50 mm. water enters the annular
water at a flow of m .215 kgs is cooled from 82 degrees c to 42 degrees c by passing it though a thin-walled tube of
draw the projections of a rhombus having diagonals 125mm and 50 mm long, the smaller diagonal of which is parallel to both the principal planes, while the other is inclined at 30 to the H.P.
an insulated cylinder of fixed volume of 4 meter cube contains 20 kg of nitrogen. paddle work is done on the gas by
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