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A paper mill has two steam generators, one at 4.5 MPa, 300?C and one at 800 MPa, 500?C. Each generator feeds a turbine, both of which have an exhaust pressure of 1.2 MPa and isentropic efficiency of 87%, such that their combined power output is 20 MW. The two exhaust flows are mixed adiabatically to produce saturated vapor at 1.2 MPa.what is second-law efficiency for the combined system?
Use the dummy load method to compute the vertical movement of joint C of the truss in Fig. 3.24 from the external loads. Assume linear elastic behavior with all members identical in cross-section with the same modulus of elasticity.
A block weighing 80 N is resting on a plane inclined 20 degree to the horizontal. The coefficient of static friction is 0.5. Determine the friction force on the block. What is the maximum available friction force?
a sky diver with a mass of 70 kg jumps from an aircraft. the aerodynamic drag force acting on the sky diver is known to
Argon at 20oC and 100kPa has a velocity of 27 m/s and enters a constant diameter pipe of 18mm. As the argon passes through the pipe, it is heated in a steady flow process to 100oC. The pressure at that point is 28 kPa. Calculate the velocity at the p..
a compressor receives air at 95kpa and 250c at low velocity. at the exit of the compressor air discharges at 1.52mpa
An open wind tunnel with altitude of 1000m has Pin=89,876Pa, Ain=4m^2, T=281.7K, Vin=30m/s and the test section Aout=0.5m^2, Vtest=(X)m/s. R=287J/(Kg*K), density=1.1117kg/m^3 and dynamic viscosity=1.076E-05kg/m-s
engine room cranea new vessel is being designed to provide a container service between two atlantic ports. the owner
estimate the activation energy for creep for the low carbon nickel alloy using the following temperature dependence of
Steam enters a diffuser operating at steady state with a pressure of 14.7 psi, a temperature of 300F, and a velocity of 500ft/s. Steam exits the diffuser as a saturated vapor with negligible kinetic energy. Heat transfer occurs from the steam to its ..
Draw the stress distribution along the walled thickness and discuss whether the composite with the applied pressure is safe or not by using von-Mises and Tresca theory.
Air is compressed from 14.7 psia and 60 F to a pressure of 150 psia while being cooled at a rate of 10 Btu/lbm by circulating water through the compressor casing. the volume flow rate of the air at the intel conditions is 5000 ft^3/min, and the power..
a centrifugal pump can provide a 20-m head rise at 75 revmin. if the rotation speed increases to 90 revmin what will be
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