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A film-cooled radial-inflow turbine is to be used in a high-performance open Brayton cycle gas turbine. The rotor is made of a material able to withstand a temperature of 1145 K at a tip speed of 600 m/s for short periods of operation. Cooling air is supplied by the compressor that operates at a stagnation pressure ratio of 4- 1, with an isentropic efficiency of 80%, when air is admitted to the compressor at a stagnation temperature of 288 K. Assuming that the effectiveness of the film cooling is 0.30 and the cooling air temperature at turbine entry is the same as that at compressor exit, determine the maximum permissible gas temperature at entry to the turbine. Take γ = 1.4 for the air. Take γ = 1.333 for the gas entering the turbine. Assume R = 287 J/(kg K) in both cases
Maturated water vapor at 800 kPa is isothermally condensed to a saturated liquid in a piston-cylinder device. Calculate the amount of heat transferred during this process.
the elevator e has a weight of 6600lb when fully loaded and is connected as shown to a counterweight w of weight of
as shown in the ?gure a bar is supported by two springs and a damper. the bars left end is free to move vertically and
the virial equation of state for n-butane at 460k is z1avbv2 in which a -265 cm3g and b 30250 cm6gmole2. calculate the
determine the force in member of the loaded truss. assume that the four external reactions at and are equal in
A 1 m diameter cylindrical container with hemispherical ends is used to transport gas. The internal pressure is 5 MPa and the safety factor is 2. Using the MSST determine the container thickness. The Material is such that E = 200 GPa, Sy = 430 MPa an..
One of the most frustrating aspects of contract management to customersclients is the length of time that it commonly takes to close out a project (from an administrative standpoint) after most or all of the contract scope of work has been complet..
consider a steam power plant with reheat that operates on a modified rankine cycle. steam enters the high-pressure
a wing generates a lift l when moving through sea-level air with a velocity u. how fast must the wing move through the
engine oil enters staggered tube array at a temperature of 25degc and at 7 ms. the tubes have a 15-mm diameter and the
you are attempting to set a world record for motorcycle jumping across a chasm. the chasm is 100 feet across and
in a carnot cycle heat is supplied at 350degc and rejected at 27degc. the working fluid is water which while receiving
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