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A power cycle receives 1120 Btu by heat transfer from a reservoir at 1080o F and discharges energy by heat transfer to a reservoir at 280 o F. The thermal efficiency of the cycle is 68% of that for a reversible power cycle operating between the same reservoirs. For the actual cycle, determine the thermal efficiency and energy discharged to the cold reservoir, in Btu(with sketch)
The main advantages of ceramic math composites over polymer matrix composites is. The phenomenon of sudden failure of ceramics when subjected to a static tensile load over time is called. Give two applications of manufactured plastics
an 0.5 m3 rigid tank contains equal volumes of freon-12 vapor and freon-12 liquid at 312k. additional freon-12 is added
hot water is pumped through a plate heat exchanger. the hot water side of the heat exchanger consists of 16 plates of
steam is contained in a rigid container at an initial pressure of 100 psia and 600 f. the pressure is reduced to 10
steam at 1 bar enters an adiabatic heat exchanger with a quality of 0.896 and exits as a saturated liquid. the steam is
calculate the number of vacancies per cubic meter in some metal at 689degc. the energy for vacancy formation is 0.75
A mixture of propane and butane is fed into a furnace where it is mixed with air. The furnace exhaust leaves the furnace at 343°C, 780.0 mmHg and contains only N2, O2, CO2, and H2O. The partial pressure of O2 in the exhaust is 51.40 mmHg and the part..
the throttling calorimeter is a device for measuring the state of a liquid-vapor mixture. the procedure is to bleed off
a projectile is fired at an angle of 62deg from the horizontal with a velocity of 704 ftsec. if it lands 4.75 seconds
Determine (a) the velocity of the air at the duct inlet and (b) the temperature of the air at the exit.
a poly-dispersed aerosol consists of spherical particles within the size range 1.0-10.0 micrometers. the particles are
estimate the convective heat-transfer coefficient for natural convection from a horizontal steam pipe. the outside
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