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An ideal gas refrigeration cycle using air as the working fluid is to maintain a refrigerated space at -23°C while rejecting heat to the surrounding medium at 27°C. If the pressure ratio of the compressor is 3, determine
(a) The maximum and minimum temperatures in the cycle,
(b) The coefficient of performance, and
(c) The rate of refrigeration for a mass flow rate of 0.08 kg/s.
a solid circular rod with a diameter of d 18mm. the bar is ade of an aluminum alloy that has an elastic modulus of e
a spherical buoy has a diameter of 1.5 mnbspweighs 8.50 kn and is anchored to the sea floornbspwith a cable as is shown
problem i. steam at 5.0 mpa 500 degrees c enters an insulated turbine operating at steady state with a mass flow rate
a stainless steel tube k 14 wmk used to transport a chilled pharmaceutical has an inner diameter of 36 mm and a wall
a cylindrical pressure vessel of diameter 2 m and wall thickness 20 mm is subjected to an internal pressure of 20 bar 2
describe one method for manipulation of microstructure and mechanical properties for each of the following class of
a bullet of mass 81gm and moving with a velocity of 300msec is fired into a log of wood and it penetrates to a depth of
An adiabatic heat exchanger is used to heat cold water at 8°C entering at a rate of 3 kg/s by hot air at 150°C entering also at rate of 3 kg/s. If the exit temperature of hot air is 30°C, what is the exit temperature of cold water? Use constant speci..
liquid water enters a 25-kw pump at 100-kpa pressure at a rate of 5 kgs. determine the highest pressure the liquid
An important fluid property is the kinematic viscosity which determines the viscous, or frictional, forces acting in a flow. The kinematic viscosity of air multiplied by 10^6 is given at 350, 450, 500, 550, and 650 K as 20.92,32.39, 38.79, 45.57, and..
refrigerant 134a enters an insulated throttling valve at 140 lbfin2 and 80degf. the refrigerant exits the valve at 50
the equation below defines the acceleration of a particle where a is in ms2 and t is in seconds. determine the position
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