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An open Brayton cycle engine operates with a compressor-pressure ratio of 6, an inlet temperature of 20 C and inlet pressure of 1 bar, and a turbine-inlet temperature of 950 C. The engine drives an electrical generator that produces 25 MWe with a generator efficiency of 90%. For the following systems find the thermal efficiency, the specific work[kJ/kg], and the air mass flow rate [kg/s], if the compressor and turbine efficiencies are 80%. Assume the air is an ideal gas with constant specific heats. Its specific heat ratio is 1.4 and gas constant is 0.287 kJ/kg-K. a) A regenerative Brayton cycle with a regenerator effectiveness of 80%. b) Cycle of part (a) with intercooling to 20 C.
The car travels up the hill with a speed of v = (0.4s) m/s, where s is in meters, measured from A. Determine the magnitude of its acceleration when it is at point s = 50 m, where p = 500 m.
consider a model of a bone with a cemented prosthesis where the outside radius of the bone is ro the radius of the
consider a rigid tank with a partition such that there are two equal volumes which are known. on one side has water at
in the design of an automobile radiator an engineer has a choice of using either a brass-copper alloy casting or a
how does the statistical mechanical definition of entropy allow a reinterpretation of the second and third law of
find the best fit Gaussian Curve through the data and plot the data and curve on the same graph.
iron undergoes a polymorphic transformation at 912degc. at a temperature just below 912degc it has a bcc structure a
you are trying to loosen a bolt from a piece of metal with a wrench but fail. what kind of wrench should you look
water flows as two free jets from the tee attached to the pipe shown below. thenbspexit speed is 15 ms. if viscous
if a particles position is described by the polar coordinates r 2 sin 2u m and u 4t rad where t is in seconds
the measured lapse rate at a given location was 3.8 degree f per 1000 ft and the surface temperature was 60 degree f.
Use steam tables to compute the total volume, total enthalpy, and total entropy of 1kg of water at 100o C, half by weight of which is steam and the remainder is liquid water.
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