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An air conditioner operating at steady state maintains a dwelling at 20oC on a day when the outside temperature is 35oC. Energy is removed by heat transfer from the dwelling at a rate of 2800 J/s while the air conditioner's power input is 0.8 kW.
Determine
(a) the coefficient of performance of the air conditioner and
(b) the power input required by a reversible refrigeration cycle providing the same cooling effect while operating between hot and cold reservoirs at 35oC and 20oC, respectively.
a one shell two tube pass surface condenser is required to handle the exhaust from a steam turbine developing 14 300 kw
an alloy named cylon is composed of 25 wt. of metal a and 75 wt. of metal b. if the densities of metals a and b are
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a circular curve of highway is designed for traffic moving at 85 kmh. assume the traffic consists of cars without
the temperature of 5 lbs of air is raised from 200 f to 500 f at constant pressure with an electrical coil. how much
a steel pipe of 12-in. outer diameter is fabricated from 14in. thick plate by welding along a helix which forms an
ten kg of water is in a closed container with a volume of 0.73 m3 and a temperature of 1000 degc. determine the amount
a 400 gallon cylindrical tank is filled with water. a valve is opened at the bottom of the tank. a five- gallon jug
the united states consumes 3749846 thousand megawatt hours each year. assuming all of that energy was dumped to the
consider five kilograms of water at 10degc and 75 quality in a closed container. the water is compressed isentropically
Determine the temperature at which the liquid in the tank is completely vaporized. Also show the process on a T-v diagram with respect to saturation lines.
an axial piston pump delivers 0.002 m3s at 3300 rpm. it has nine 16-mm diameter pistons arranged on a 135-mm piston
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