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Air enters the compressor of a regenerative gas-turbine engine at 300K and 100 kPa, where it is compressed to 800 kPa and 580K. The regenerator has an effectiveness of 72 percent, and the air enters the turbine at 1200K. For a turbine efficiency of 86 percent, determine (a) the amount of heat transfer in the regenerator and (b) the thermal efficiency. Assume constant specific heats at room temperature.
a roughing section of a broach is to remove stock 3.2 mm deep from a steel surface205 mm long x 50 mm wide each tooth
consider the non lifting flow over a circular cylinder. calculate the location on th surfaceof the cylinder where the
Steam enters the turbine of a simple vapor power plant with a pressure of 160 bar and a temp of 560 C and expands adiabatically to 0.08 bar
what is the difference between the pressure inside a soap bubble and atmospheric pressure for a 3-in-diameter bubble?
a bead a weighting 2lb slides on a quarter-circular frictionless bar bc with radius. the bead is supported by a cable
consider a naca 0009 airfoil that has a plain flap whose length is 0.2c and which is deflected 25. a. calculate cl and
air enters a compersoor operating at steady state at 1.05 bar 300k with a volumetric flow rate of 12 m3min and exits at
the sherwood number for vapor transport from the surface of a high moisture food product to the surrounding air is
a piston-cylinder device contains 0.15kg of air initially at 2mpa and 350oc. the air is first expanded isothermally to
in cooling situations where the desired temperature range is large two refrigeration cycles can be stacked to create a
An engine block with a surface area measured to be 0.90m2 generates a power output of 55 kW with a net engine efficiency of 35%. The engine block operates inside a compartment at 157oC and the average convection heat transfer coefficient of 60 W/m..
the following data were observed in a step response experiment of a thermometer is under a step input from 0 degress c
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