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A vertical piston-cylinder device, which is insulated, initially contains 15 kg of water, 9 kg of which is in the vapor phase. The pressure inside the cylinder is maintained constant at 0.3 MPa by mass of the piston. Now steam at 0.8 MPa and 500 °C is allowed to enter the cylinder from a supply line until all the liquid in the cylinder has vaporized. Determine (a) the final temperature in the cylinder and (b) the mass of the steam that has entered.
A radiator wall measuring 2 m by 3 m (WxH) is held a temperature of 125 °C. Straight aluminium fins (k = 175 W/mK) are to be mounted on the wall. The fins are 5 cm in length and 0.8 mm thick. The system is allowed to convectively transfer heat to amb..
the heat flux that is applied to one face of a plane wall is q 20 w m2. the opposite face is exposed to air at
a 10-m3 rigid tank contains an ideal gas mixture of nitrogen and carbondioxide at 135 kpa and 275 k. if the partial
calculate the mass of the sun noting that the period of the earths orbit around the sun is 3.156 107 s and its distance
A paper clip is made of wire 0.7 mm in diameter. If the original material from which the wire is made is a rod 25 mm in diameter, calculate the longitudinal engineering strain and true strain that the wire has undergone during processing.
a cycle is characterized by the following three processes process 1-2 is defined to be a constant pressure expansion.
air is compressed by an adiabatic compressor from 100 kpa and 20 degc to 1.8 mpa and 400 degc. air enters the
You have a centrifugal pump with an inlet radius of 200mm, an inlet blade width of 60mm, and inlet blade angle of 50 degrees. The outlet radius is 600mm, outlet blade width is 40mm and the outlet blade angle is 70 degrees. The pump handles water and ..
engineers plan to build a pipeline 1000 km in length to transport water to a drought-stricken region. they wish to have
a spherical buoy has a diameter of 1.5 mnbspweighs 8.50 kn and is anchored to the sea floornbspwith a cable as is shown
a piston cylinder contains air at 350 kpa and 20 c. it is then heated at constant pressure until its volume increases
both heating and cooling for a structure can be furnished by a heat pump. one such device operating in winter uses
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