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Refrigerant 134a flows at steady state through a horizontal tube having an inside diameter of .05 m. The refrigerant enters the tube with a quality of .1, temperature of 36 C, and velocity of 10 m/s. The refrigerant exits the tube at 9 bar as a saturated liquid. Determine (a) the mass flow rate of the refrigerant, in kg/s. (b) the velocity of the refrigerant at the exit, in m/s. (c) the rate of heat transfer, in kW, and its associated direction with respect to the refrigerant.
a rigid well-insulated tank contains 3 kg of a 2-phase liquid-vapor mixture of water initially at 200 kpa with a
for a turning operations you have selected an hss tool and turning a hot rolled free machining steel bhn 300. your
Air at 90 kpa and -7 C enters an adiabatic diffuser steadily with a velocity of 180 m/s and leaves with a low velocity at a pressure of 100 kpa. The exit area of the diffuser is 5 times the inlet area. Determine (a) the exit temperature and (b) th..
what is meant by the mechanical loss coefficient ? of a material? give examples of designs in which it would play a
a bicyclist of mass 70kg supplies 300 watts of power while riding into a 3ms headwind. the frontal area of the
ground source heat pumps operate by using the soil rather than ambient air as the heat source or sink for heating or
1.tensile tests were done on a steel bar an aluminum bar and a plastic bar. the bars all had a diameter of 0.505
a what is the total volume of air drawn into the three cylinders each time the engine executes one revolution?b what is
Water is contained in a 0.2 m3 vessel at 200 C. The mass of water in the vessel is measured to be 2 kg. Determine (a) the pressure in the vessel, (b) the enthalpy, h, of the water in kJ/kg, (c) the mass and volume of vapor in the vessel.
refridgerant 410a is initially at 120 f and quality of 30. it undergoes a constant-pressure process. the final state is
a farm equipment manufacturer has a need to actively reduce the vibration of the operators seat using an electrodynamic
a 50 kg crate resting on a flat smooth surface is acted upon by a horizontal force that varies by the equation f1.5x
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