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A turbine produces 2 MW of power while accepting steam at 3 MPa and 400 C and rejecting steam at 50 kPa and 100C. Find (a) the isentropic efficiency of the turbine (assume no heat transfer) (b) the mass flow rate of steam.
consider two geothermal wells whose energy contents are estimated to be the same. will the exergies of these wells
heat amp mass transfer incropera 6th ed prob. 5.68 asphalt pavement may achieve temperatures as high as 50 degree
the rubber mallet is used to drive a cylindrical plug into the wood member. if the impact force varies with time as
a cylindrical specimen of a brass alloy 10.0 mm 0.39 in. in diameter and 120.0 mm 4.72 in. long is pulled in tension
a 200-kg 5-m-wide rectangular gate shown innbspthe figure is hinged at b and leans against thenbspfloor at a making an
A piston-cylinder device contains 0.005 m3 of liquid water and 0.9 m3 of water vapor in equilibrium at 600 kPa. Heat is transferred at constant pressure until the temperature reaches 200°C.
A linear isotropic material has the shear modulus of elasticity G of 11.5*10^6 psi and the Poisson's constant v of 0.3.
a balloon behaves so the pressure is p c2v13 c2 100 kpam. the balloon is blown up with air from a starting volume of
steam enters a diffuser at 20 psia and 240of with a velocity of 900 fts and exits as saturatednbspvapor at 240of and
a pure jet engine propels an aircraft at 250 ms through air at 45 kpa and -13 degc. the inlet diameter of this engine
an ideal gas is brought through an isothermal compression process. the 2.00 moles of gas go from having an initial
A steel tape is used to measure a distance of 20 m at a 10 0C. Assuming that the tape will measure the true distance when the temperature is 20 0C. What would be the indicated distance at 10 0C? What would be the indicated distance at 400C?
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