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The schematic of a power cycle using water flowing each component is shown. Water flows through the boiler and condenser at constant pressure and through the pump and turbine adiabatically.
Process 4-1: constant pressure at 1 MPa from saturated liquid to saturated vapor
Process 2-3: constant pressure at 20 kPa from x2 = 88% to x3 = 18%. Determine a) is the cycle reversible, irreversible or impossible, b) the thermal efficiency and c) how does this compare with the theoretical maximum efficiency?
consider the isothermal expansion of 4.50 mol of an ideal gas at 450 k from an initial pressure of 12.0 bar to a final
a weighted piston maintains the pressure of a piston cylinder at 200 psia. initially the system contains no mass. a
a set of steel reinforcing rods is to be stretched axially in tension to create a tensile stress of 30ksi prior to
initially an insulated rigid tank contains 3.73 kg of water at 240oc and 1 mpa. a heater in the wall of the tank
a uniform solid sphere of radius r 0.480 m and mass m 17.0 kg turns counterclockwise about a vertical axis through
a 6 lb collar is constrained to travel along a frictionless vertical ring of r3 ft. the spring is attached to the
a hydraulic motor has a displacement of 130 cm3 and operates with a pressure of 105 bars and a speed of 2000 rpm. if
1. what is a shock wave and how do fluid properties change across it?2. what is the difference between static and
the environment in a certain area is 15 degrees c. plot the maximum efficiency of a nuclear power plant as a function
a heat pump uses r-134a as the working fluid and operates on an ideal vapor-compression cycle. the condenser pressure
using ees or other software investigate the effect of reheat pressure on the performance of an ideal rankine cycle. the
Water drips at the rate of 5 drops per second from a leaking tap. Determine the vertical distance between two consecutive drops after the lower drop has attained a velocity of 3 m/s.
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