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A frictionless piston-cylinder system contains 10kg of water at 20C at atmospheric pressure. An external force F is then applied on the piston until the pressure inside the cylinder increases to 100atm. assuming the coefficient of compressibility of water remains unchanged during compression, estimate the energy needed to compress the water isothermally.
heat is to be conducted along a circuit board that has a copper layer on one side. the circuit board is 15 cm long and
a hydrogen tank 25 cm in diameter and 80 cm in height is charged to 150 atmospheres at room temperature 25 c. a
You are a thermal design engineer and plan to design cooling solution for computer chip. As a basic design, a chip (kc = 50 W/m-K) is mounted in a dielectric substrate (ks = 5.0 W/m-K) and one surface of the system is convectively cooled, while the r..
each cycle the working fluid of a sterling engine receives 2.67 kj of energy in the heat interaction with its
Air enters a one-inlet, one-exit control volume at 6 bar, the pressure is 3 bar, the temperature is 456.5 K, and the velocity is 300 m/s. The air behaves as an ideal gas for steady-state operation, determine: (a) the mass flow rate in kg/s (b) the ex..
after a combustion process in a cylinder the pressure is 1200 kpa and the temperature is 350 c. the gases are expanded
Steam is produced at 70 bar and some unknown temperature. A small amount of steam is bled off just before entering a turbine and goes through an adiabatic throttling valve to atmospheric pressure. The temperature of the steam exiting the throttling v..
Using n=2 in 2 in Chvorinov's rule, calculate the mold constant B. Then compute the solidification time of a 0.5inch by 8inch by 8 inch casting poured under the same conditions?
A full revolution press has 100 rpm flywheel rotation. The press is equipped with tow hand trip devices mounted on the machine at a distance of 20 inches from the point of operation. How many engagement points on the flywheel would be necessary to ma..
the ocean thermal energy conversion otec power plant takes advantage of the temperature difference between ocean
consider two flat plates seperated by a distance of 0.25 in. in this application castor oil is used as a lubricant. the
a centrifuge bowl with 250mm internal diameter is turning at 4000 rmin. it contains a layer of aniline 50mm thick. if
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