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An inventor claims to have developed a device that executes a power cycle while operating between reservoirs at 500 and 300 K that has a thermal efficiency of (a) 45%, (b) 40%, (c) 35%. Evaluate the claim for each case.
a combined gas-vapor power plant operates as shown in fig.9.94. pressure and temperature data are given at principal
A large manufacturing space with an average floor to ceiling height of 30 ft has a floor area of 5000 ft^2. The total infiltration rate for the space is estimated to be 1.5 air changes per hour. The inside design temperature and relative humidity are..
a dwelling for which the heat transfer rate through the walls is 1400 btuh per degree temperature difference between
a rocket is held stationary by the horizontal force fx and the vertical force fz. the celocity and pressure of the
The tapered member is fixed connected at its ends A and B and is subjected to a load P = 7 kip at x =30in. Determine the reactions at the supports. The material is 2in. thick and is made from 2014-T6 aluminum (Eal = 10,600ksi).
a gas initially at p1 1 bar and occupying a volume of 1 liter is compressed within a piston-cylinder assembly to a
the first step in the manufacture of the isobutene from the isomerization of n-butane is to compress the feed stream of
The uniform slender bar AB has a mass of 8 kg and swings in a vertical plane about the pivot at A. If thett^ = 2 rad/s when theta = 30 degrees, compute the force suported by the pin at A at that instant
air enters a converging-diverging nozzle at 700 kpa 240 k and ma 0.3. the inflow nozzle area is 13 cm2 and the
two kg of saturated liquid water at 1 bar is compressed to 25 bar and 100degc in a water pump. determine the change in
liquid water enters a 25-kw pump at 100-kpa pressure at a rate of 5 kgs. determine the highest pressure the liquid
a 2-kg block of ice with an initial temperature of -20f is dropped into an insulated tank containing 10-kg of liquid
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