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Refrigerant-134a enters the evaporator coils placed at the back of the freezer section of a household refrigerator at 100 kPa with a quality of 20 percent and leaves at 100 kPa and -26°C. If the compressor consumes 400 W of power and the COP the refrigerator is 2.2, determine (a) the mass flow rate of the refrigerant and (b) the rate of heat rejected to the kitchen air.
In the position shown, the angular velocity and the angular acceleration of the rod AB are 4 rad/sec and 6 rad/sec2, respectively, both counterclockwise. For this instant calculate the velocity and acceleration of collar A. ( AB = 600 mm)
a rigid well-insulated tank contains 3 kg of a 2-phase liquid-vapor mixture of water initially at 200 kpa with a
If it is known that the value of the stress exponent n for this alloy is 8.2, compute the steady-state creep rate at 1300 K and a stress level of 89 MPa.
consider the power system as designed below. the duty fluid is water and has a mass flow 0.75 kg s and all piping
Calculate the steady state excess electron and hole concentrations as a function of distance into the semiconductor.
Calculate the change in internal energy of the gas. Remember it is an ideal gas in a constant temperature bath.
A heat pump with a COP (coefficient of performance) of 2.8 is used to heat an air-tight house. When running, the heat pump consumes 5 kW of power
a nozzle is a device that is used to increase the velocity of a flowing fluid. it does this by reducing the pressure.
the compound beam is fixed at a and supported by a rocker at b and c. there are hinges pins at d and e. take f 14kn.
liquid water is cooled at a constant pressure of 200 kpa in a piston-cylinder device from a temperature of 110 degc to
Question about Turbomachinery - Impulse & Reaction Turbines, An impulse air turbine rotor with a blade speed (U) of 300 m/s is measured to have a relative rotor inlet velocity (W_1) of 750 m/s at an angle of 69 degrees and an outlet relative veloc..
Use Lagrange"s equations to derive the EOM for the system. You have a function L of some What are Lagrange"s Equations?
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