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A Refrigerator is to remove heat from the cooled space at a rate of 2300 kJ/min to maintain it temperature -30.5°C.
1.Determine the minimum power input (in kJ/min) required for this refrigerator, if the air surrounding the refrigerator is at 40°C.
2.Determine maximum posible coefficient of performance under these condition i.e. COP R
refrigerant 134a is the working fluid in an organic rankine cycle. saturated vapor at 60degc enters the turbine and the
Coal is discharged from the tailgate of a dump truck with an initial velocity vA = 2 m/s A 50°. Determine the radius of curvature of the trajectory described by the coal.
a microscope has a 2.40-cm focal length eyepiece and a 0.810-cm objective lens. for a relaxed normal eye assume a
a uniform rod ab of length 3m and mass 20kg is suspended with its end b against a vertical wall while its end a is
How often would the sample have to be taken - If the objective was to determine the average value of the material in the bunker, how could this be done by making one measurement?
the free convection heat transfer coefficient on a thin hot vertical plate suspended in still air can be determined
i want a unique version of this
as a committed olympic weightlifter you bring alonf a barbell on your campaign trip. each end of the bar carries a mass
a mass that weighs 8 lb stretches a spring 4 in. the mass is attached to a dashpot mechanism that has a damping
A 12 Volt battery is charged by supplying 3 Amps over a period of 6 hours. What is the change of energy stored in the battery if the battery loses 400kJ of heat during charging.
ammonia vapor flows through a valve. it enters the valve at a pressure of 8 bar and a temperature of 120c and after
how long would it take to use up current reserves? suppose the total resource is five times current reserves; if the use rate continues to grow at 2.6 percent, how long would it take to use up the resource?
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