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Hydrogen at 25 bar, 450°C enters an adiabatic turbine and expands to 2 bar, 160°C with a mass flow rate of 0.2 kg/s. For a dead state of To= 25°C, Po = 1 atm determine the exegetic efficiency.
Employing the ideal gas model, determine the change in specific entropy between the indicated states, in Btu/lbmol?ºR. Solve 2 ways: Use the appropriate ideal gas table AND also by using a constant specific heat value.
A steam power plant operates on an ideal reheat-regenerative Rankine cycle with one reheater and two open feed water heaters. Steam enters the high-pressure turbine at 1,500 psia and 1,100 degrees Farenheit and leaves the low-pressure turbine at 1 ps..
An air-conditioner which uses refrigerant R134-a operates on the Carnot refrigeration cycle. Determine the rate of heat transfer (kW) out of the condenser. Determine the power input (kW) to the compressor.
a steel strut is pinned at both ends. the strut has a solid circular cross section and is 6 m long. the strut
a steady-flow compressor is used to compress helium from 15 psia and 70of at the inlet to 200 psia and 600of at the
a block weighing 100 lbf sits on a 20ordm inclined surface. the coefficients of static and dynamic kinetic friction are
please use ees to solve this problem.one method for storing hydrogen involves cooling it so that it liquefies. figure
two cylinders are filled with liquid water ? 1000 kgm3 and connected by a line with a closed valve. a has 100 kg and b
500 galmin 30 ls of 100 degree f 40 degree c water flows through 300 ft 90m of 6-inch sch 40 steel pipe. the pipe
a rod has a cross sectional area of 1 cm2. its material has the following strength properties beyond which it breaks
water flows 2m deep at 2ms in a rectangular channel. find the change in depth and in water surface elevation caused by
an axial piston pump delivers 0.002 m3s at 3300 rpm. it has nine 16-mm diameter pistons arranged on a 135-mm piston
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