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Refrigerant 22 enters an insulated compressor operating at steady state as saturated vapor at -16oC with a mass flow rate of 1.5 kg/s. Refrigerant exits at 7 bar, 70oC. Changes in KE and PE from inlet to exit can be ignored. Determine: (a) the volumetric flow rates at the inlet and exit, each in m3/s (b) the power input to the compressor, in kW
a link AC has uniform rectangular cross section 3mm thick and 25mm wide. Determine the normal stress in the central portion of that link? solution
a freezer is 1m wide and deep and 2m high and must operate at -10c when the ambient air is at 30c. what thickness of
silica sio2 is formed on silicon as an electrically insulating layer for microelectronic devices. silica is formed when
at a point on the free surface of a machine part the strains are ex1200 mu ey300mu yxy700 mu. use mohrs circle to
an orifice meter is installed in a 12 foot ductile iron pipe carrying water at 60 deg f. a mercury manometer is used to
If the pipe is to be insulated with glass wool insulation (k=.05 W/m C) in order to decrease the temperature rise of water to .25 degrees C, determine the required thickness of the insulation.
a concrete sewer pipe 3 ft in dia is laid so it has a drop in elevation of 1 ft per 1000 ft of lenght. if swage assume
As shown, a 130 lb bungee jumper wants to jump from the top of a 655 ft high bridge and be able to just touch the water below. Given that the bungee cord has a spring constant of 2.33 lb/ft, what should the bungee cord's relaxed length, l, be for ..
the small two-story office building shown in fig.p4.10 has 36000 ft3 of occupied space. due to cracksaound windows and
a compressor is designed to run at 4000 rpm when ambient conditions are 101 kpa and 20c. on the day when the
a pipe tapers from a diameter of 0.5 m at the inlet to a diameter of 0.25 m at the outlet and turns by an angle of 45
combustion products with the molar anaylisis of 10 co2 20 h2o 70 n2 enter an engines exhaust pipe at 1000f 1atm and are
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