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Liquid water enters a valve at 300 kPa and exits at 275 kPa. As water flows through the valve, the change in its temperature, stray heat transfer with the surroundings and potential energy effects are negligible. Operation is at steady state. Modeling the water as incompressible with constant p = 1000 kg/m3, determine the change in kinetic energy per unit mass of water flowing through the valve, in kJ/kg.
the structural engineering design section within the engineering department of a regional natural gas corporation has
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calculate the work necessary to compress air in an isolated cylinder with initial and final volumes of 6.0 and 1.2 ft3
an 8-kg plunger is released from rest in the position shown and is stopped by two nested springs the constant of the
consider an ideal combined cycle with compression ratio of 71 in which air enters the compressor at 295 k enters the
consider a steam power plant that operates on the regenerative rankine cycle with one open feedwater heater. the steam
a household refrigerator that has a power input of 80w assume constant work input over time and a coefficient of
a rigid well insulated tank contains a two-phase mixture consisting of 0.07lb of saturated liquid water and 0.07lb of
Refrigerant-134a enters an adiabatic compressor as saturated vapor at -24 degrees Celsius and leaves at 0.8 Mpa and 60 degrees Celsius. The mass flow rate of the refrigerant is 1.2 kg/s. Determine (a) the power input to the compressor and (b) the vol..
what is mfx the contribution to the moment about point o made by the x component of the force f at point a? what is
a hydraulic cylinder has a piston of cross sectional area 45cm2 and a constant working fluid pressure of 2.2mpa. the
material a has a fracture toughness and yield stress ten times that of material b a write an expression for the
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