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A piston-cylinder contains 50 L of saturated liquid R-134a. The piston is frictionless, and has a mass and area resulting in an applied pressure of 500 kPa on the refrigerant. The refrigerant is now heated until its temperature rises to 70 °C. Calculate the work (in kJ) done during this process.
which emits more sox per unit amount of electricity produced a coal-fired plant with a 90 efficient so2 scrubber or an
before being injected into a furnace pulverized coal is preheated by passing it through a cylindrical tube whose
assume that a person is on a roof and that the structure has a circular cross section. if the interface is frictionless
a tank has a stirrer that delivers 200 kj of work on 100 kilograms of water at 45 degrees celcus. assume all of the
consider a fluid of density ? inincompressible laminar flow in a plane narrow slit of lengthl and width w formed by two
1 kmol of n2 gas ideal is contained in a piston initially at 300k with a volume of 0.1 m3. the piston cylinder is well
Calculate the minimal round-trip time delay for a radio communications link between Los Angeles and the satellite.
It is proposed to use Liquid Petroleum Gas (LPG) to fuel spark-ignition engines. A typical sample of the fuel on a volume basis consists of: 70% propane C3H8; 5% butane C4H10; and 25% propane C3H6. The higher heating values of the fuels are 50.38 MJ/..
Assuming the plant operates on the ideal vapor-compression cycle using refrigerant 134-a between the pressure limits of 120 and 700 kPa, determine
A pump is employed to deliver liquid water from a pond to a higher elevation. The pump steadily draws water from the pond at a volumetric flow rate of 192 gal/min through a pipe having a 7 in diameter inlet. The exit diameter of the pipe is 2 in. and..
the collars are pin connected at b and are free to move along rod oa and the curved guide oc having the shape of a
refrigerant 22 enters the compressor of an ideal vapor compression refrigeration system as saturated vapor at 2408c
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