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In a certain processing plant, 10,000 kg/h steam is changed from 1 MPa, 400°C, to 0.2 MPa, 200°C, in a steady-flow device that can exchange energy as heat with the environment at 20°C. This is accomplished by first cooling the steam in a heat exchanger and then dropping the pressure by passing the steam through a valve. An energy-conscious plant manager thinks he might replace this hardware by something that could generate electric power while producing the same charge in steam state. Calculate the maximum amount of electric power (kW) that could be derived.
consider a gas-turbine power plant whose pressure ratio is 8. the isentropic efficiencies of the compressor and the
calculate the transverse modulus of the peek/carbon fiber composite with 30% volume fraction by tow method. the modulus of peek is 3.8 GPa and the modulus of the carbon fiber is 400GPa. assume the reinforcing factor.
a flashlight is powered for 30 minutes by a 9-v battery supplying power at 0.5 amps.a find the resistance of the
the pipe that supplies drinking water to a community in a cold region of the planet is buried a depth of 3m from the
a thin-walled cylindrical pressure vessel of 250 mm internal diameter and 5 mm thickness is subjected to an internal
a bar of rectangular cross section 20mm times 5mm with a central hole of diameter 4mm is subjected to a tensile force f
this question has popped up elsewhere on here but im a little dubious on some of the answers. anyway here goes any help
a carnot engine operates between temperatures of 700 and 369 k. to improve the efficiency of the engine it is decided
A dockworker applies a constant horizontal force of 71.0 to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves a distance 11.5 in a time 5.00 . what is the mass of the ice block?
you are standing in the middle of a frozen lake. there is no wind and the ice is so smooth it is frictionless. you are
two oils are tested to establish their viscosity index. oil a and oil b have their viscosity measured at temperatures
a scuba diver has a tank with an internal volume of 2500 cm3 air tank which is pressurized to 22 mpa at 27 deg c. after
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