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A steam power plant implements an ideal reheat Rankine cycle. Steam enters the inlet of the high-pressure turbine at 8 MPa and 450 °C and the inlet of the low-pressure turbine at 0.5 MPa and 500 °C. The condenser operates at 10 kPa. Determine:
(a) the mass flow rate through the boiler needed for this system to produce a net 5000 kW of power and
(b) the thermal efficiency of the cycle.
a piston cylinder of 0.5 m3 contains water with quality 50 at 200 kpa. slow expansion is performed while there is heat
what is the pressure difference over the manometer in newtons per meter?
Geometric angle of attack, The Piper Cherokee has a wing area of 170 ft2 and a wing span of 32 ft. Its maximum gross weight is 2450 lbs. The wing uses a NACA 65-415 airfoil, which has a lift slope of 0.10331deg^-1 and alpha(L=0)= -3.0deg. Assume th..
Design a flat roof meeting certain mechanical performance criteria. The basic structure of the roof is a series of rectangular-section 'joists', made from softwood, that span the space to be covered by the roof.
a standard steel specimen of 13 mm diameter elongated 22 mm when it was subjected to a tensile force of 29.5 kn if the
a closed rigid tank well-insulated contains air initially at 1 bar 300 k. the volume is 2 m3. a stirring rod transfers
water flows from a storage tank through a horizontal 6-inch pipe cast iron and discharges water 20 degrees celsius into
The die characteristic is Q_x = 0.0015p where p is the head pressure in psi. Determine the flight angle that maximizes the flow rate Q_x and graph it.
a tank contains helium at 103degrees celcius and 10.9kpa gauge . the helium is heated in a process by heat transfer
the concrete slab of a basement is 11 m long 8 m wide and 0.20m thick. during the winter temperatures are nominally 17
hockey player a carries the puck on his stick and moves in the direction shown with a speed va4 ms. in passing the puck
a venturi meter is inserted in a pipe whose diameter is 12 in. the diameter of the meter at its throat is 6 in. and the
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