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One component in a household refrigerator is the compressor where refrigerant 12 enters as saturated vapor at -24?F and is isentropic ally compressed to 29 psia. Determine the work required in kJ/kg and the exit temperature (in °C) of the refrigerant. 2. To keep the petroleum flowing in the Alaskan pipeline, it must be heated periodically. What is the heat transfer rate required at a heating station to heat petroleum at constant pressure flowing at 30 kg/s from 0?C to 100?C? 3. Consider a rigid tank of volume 2 m3 containing saturated liquid refrigerant-12 at 20?C. The tank is connected to an ideal turbine and as the refrigerant leaves the tanks it flashes to saturated vapor. If the tank is maintained at 20?C and the turbine exit pressure is 100 kPa, how much work will be produced when two thirds of the initial mass has been used?
imagine you have three paper cups. cup 1 is covered with a tissue paper cup 2 with a plain sheet of paper and cup 3
An auto speedometer is graduated in 5 mph increments and has an accuracy rated to be within ±4%. Estimate the uncertainty in indicated speed at 60 mph.
The maximum shear strain at a point in a thin elastic plate is given as gamma (max) = 450(mu). it is also known that the sum of the normal stresses on two perpendicular planes passing through the point is 30 mpa. Determine the magnitude of the princi..
a 50 kg copper block initially at 350degc is quenched in a closed rigid insulated tank containing 120 l of liquid water
suppose that you want to design a column to support a uniform compressive stress stress naught. if the columns cross
During a lab demonstration, two thermocouples were made by using copper-constantan wires. The junction diameter of one thermocouple is 1 mm, while the other is 0.2 mm. Initially, both thermocouples were held in a constant-temperature environment and ..
consider two types of steady-state expansionthrottling devices for ammonia 1 a rigid valve amp 2 a turbine that is used
atmospheric air at 90o f and 60 relative humidity flows over a cooling coil at an inlet volumetric flow rate of 2000
a well insulated rigid tank with a volume of 0.4m3 and pressure 150kpa is subject to an internal resistance heater of
a motorist enters a freeway at 36 kph and accelerates uniformly to 90 kph. from the odometer in the car the motorist
a certain kind of brick has a density of 2000kgm3 and a compressive strenght of 40mpa. what is the highest vertical
a horizontal force f pushes a 10 kg block up a fricitionless ramp with a circular contour the radius of curvature of
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