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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.
toms wife dina owns a printing business in town. tom works in the accounts payable department of jiffy lube company.
a charge of 18 nc is uniformly distributed along a straight rod of length 3.0 m that is bent into a circular arc with a
a spring with a spring constant of 230.6 nm is compressed by 0.251 m. then a steel ball bearing of mass 0.0441 kg is
a four-stroke-cycle engine operates on the air-standard diesel cycle. the engine has six cylinders with a 0.105 m bore
consultant 2310 per week overtime-not applicable 3 withholding allow.comp. prog. 34 per hour 1.5 times hourly rate for
a certain generating power plant requires 1 mw output. two types of diesel- engine installations are available. one
the dates of importance in connection with a cash dividend of 65000 on a corporations common stock are january 15
the data show the bug chirps per minute at different temperatures. find the regression equation letting the first
a 1.0cm -tall candle flame is 2.0m from a wall. you happen to have a lens with a focal length of 42cm . a how many
water at 10degc is pumped from a lake through a pipe to an elevation of 25 m above the lake surface. the pipe is 650 m
a mass of 2.4 kg of air at 150 kpa absolute and 12 degrees celsius is contained in gas tight frictionless piston
Problem Statement Consider the landing gear shown below. Working in teprns of two, come up with a single optimized design for given operational conditions and design considerations
A cooking pan whose inner diameter is 20 cm is filled with water and covered with a 4-kg lid. If the local atmospheric pressure is 101 kPa, determine the temperature at which the water starts boiling when it is heated.
consider an ideal simple gas turbine cycle. for a net power output of 10000 horse power an inlet air temperature of
Draw a graph of system head and fluid power against flow rate on one sheet of graph paper, using the values determined in(c)
air is heated at steady state as it flows through a constant area duct. at the inlet the pressure is 2.8 bar the
a particle is moving along a straight line such that when it is at the origin it has a velocity of 8 ms part a if it
Fluid/Dam Pressure, Compare the pressure force exerted on the face of two dams that hold a fresh water of 1000 Kg/m^3 density and a salty water of 1030 Kg/m^3
A 7/16 nut driver with a 1 1/2 inch diameter handle is used to install a 1/4 20 UNC bolt into a robotic arm. Determine the circumference where the effort is applied
Electricity might be used to run the fan to draw air through the system, and also to run a chiller - What is a typical COP for a commercial chiller?
The temperature of the water drops to 260 F as a result of heat transfer to the surroundings. Determine the final pressure in the tank?
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