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In an actual refrigeration cycle using R-12 as the working fluid, the refrigerant flow rate is 0.05 kg/s. Vapor enters the compressor at 150 kPa, ?10°C, and leaves at 1.2 MPa, 75°C. The power input to the compressor is measured and found be 2.4 kW. The refrigerant enters the expansion valve at 1.15 MPa, 40°C, and leaves the evaporator at 175 kPa, ?15°C. Determine the entropy generation in the compression process, the refrigeration capacity and the coefficient of performance for this cycle.
a steel bar 2-meters long and having a square cross-section 2-cm on an edge is pulled in tension with a load of 100000
a gymnast of weight 720n is holding himself in the cross position on the high rings. he is quite still. draw a
a fully automated production line in a facility involves metal blocks being placed in a furnace for heat treatment. two
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Saturated liquid-vapor mixture of water, called wet steam, in a steam line at 2000 kPa is throttled to 100 kPa and 120?C. What is the quality in the steam .
the boy of mass 40 kg is sliding down the spiral slide at a constant speed such that his position measured from the top
an adiabatic and reversible steam turbine receives steam at 1 mpa and 300 degrees c. the exit pressure is 100 kpa.
a liquid food is being heated in a tubular heat exchanger. the inside pipe wall temperature is 110degc. the internal
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a strip of metal is 250 mm long. it is stretched in two steps first to 300 mm and then nbspto 400 mm. show that the
suppose you need a wire with a tensile strength of 80 ksi and a diameter of 0.19 inches. your starting material is a 1
air at 5 bar and 177degc state 1 is expanded through a turbine to 1 bar and 27degc state 2. the mass flow rate of air
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