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Consider a gas-turbine power plant whose pressure ratio is 8. The Isentropic efficiencies of the compressor and the turbine are 80%, and there is a regenerator with effectiveness 0f 70%. When the mass flow rate of air through the compressor is 40 kg/s, the turbine inlet temperature becomes 1700 K. But the turbine inlet temperature is limited to 1500 K, and thus steam injection into the combustion gases is being considered. However, to avoid the complexities associated with steam injection, it is proposed to use excess air (that is, to take in much more air than needed for complete combustion) to lower the combustion and thus turbine inlet temperature while increasing the mass flow rate and thus the power output of the turbine. evaluate the proposal, and compare the thermodynamic performance of "high air flow" (different design values) to that of a "steam injection" gas turbine power plant under the following design constrained conditions:
- The ambient air is at 100 kPa and 25oC.- Adequate water supply is available at 20oC.- The amount of fuel supplied to the combustion chamber remains the same.
a steel cylinder of mass 2 kg contains 4 l of liquid water at 25oc at 200 kpa. find the total mass and volume of the
Important information about Compressive Stress, A circular cross sectional bar with a diameter of 3.25 inches is loaded with a uniform axial compressive load of 22,750 pounds. What is the compressive stress along a cross section of the bar?
calculate the energy for vacancy formation in al given that the equilibrium number of vacancies at room temperature 25
a bullet of mass m0 is fired horizontally with a velocity v0 into the slender bar of a pendulum of mass m and length l
what is the minimum distance d at which the brakes must be applied to avoid a collision? Treat the train as a particle and assume that the railroad tracks are rectilinear and horizontal.
draw a free body diagram for each of the two situations. use the "radial" Newton's law to find the tension in the string at each of these situations.
a subsidiary of a major furniture company manufactures wooden pallets. the plant has the capacity to produce 300000
a structural compenent is formed with aluminum alloy 6061-t6 with youngs modulus e68.9 gpa and shear modulus g 26 gpa.
the united states is currently considering standards to generate 20 of its electricity from renewable resource in the
Make a form tool for lathe for making a convex groove of 3 mm radius. tool material will be tungsten carbide. Know the dimensions of tool.
a chicken has a mass of 2.2 kg and a specific heat of 3.54 kjkgc. the chickens are cooled by water that enters the heat
a heat engine absorbs 25 mw from a 400 degree c combustion change and rejects 15 mw to the atmosphere at 30 degrees c.
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