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Determine the COP of a refrigerator that removes heat from the food compartment at a rate of 5040 kJ/ h for each kW of power it consumes. Also, determine the rate of heat rejection to the outside air.
a non-ideal brayton cycle with regeneration operates with incoming air at 22c and 0.1mpa. the compression ratio is 121
A steam compressor receives H 2O at 90kPa and 75% quality at a rate of 50 kg/s. Part way through the compressor, steam is bled off at 20kg/s, 2MPa and 300C. The remainder exits the compressor at 10MPa, 500C. Assuming heat transfer and changes in po..
a piston-cylinder device contains 0542 kg of refridgerant -134a at -10 degrees c. the piston is free to move has a mass
a vortex tube has an inlet air flow at 300 k and 5 bar. a vortex tube with 1 mole of input air outputs 0.8 moles 1 bar
a 50.0 g object moves on the end of a spring with spring constant k 25.0 nm. it is released with an initial
a 200-mm-long strip of metal is stretched in two steps first to 300mm and then to 400mm. show that the total true
combustion products 2 water vapor and 98 dry air by mass flow in a chimney at 34oc and 1 atm. determine a. the dew
Determine the missing property among P,T
a 1-m3 rigid tank initially contains air at 150 kpa 300 k. the tank is connected through a valve to a supply line at
estimate the magnitude of the force in both lbf and n exerted by a seat belt on a 200 lb driver during a frontal
a conveyor belt rises at a thirty degree angle. its vertical hight measured from the ground is 20 ft sorry i cant seem
Determine the size of the contact patch, the contact stresses, and the maximum shear stress for a 40 mm diameter steel cylinder, 25 cm long, rolled against a flat plate with a 4 kN force pressing the cylinder onto the flat plate.
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