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A window-mounted room air conditioner removes energy by heat transfer from a room and rejects energy by heat transfer to the outside air. For steady -state operation, the air conditioner cycle requires a power input of 0.434kw and has a coefficient of performance of 6.22.
a) Determine the rate that energy is removed from the room air, in kW.
b) If electricity is valued at $0.1/kW*h , determine the cost of operation for 24 hours of operation.
A 20 MW back-pressure steam turbine receives steam at stagnation pressure of 4 MPa and stagnation temperature of 300oC, exhausting from the last stage at stagnation pressure of 0.35 MPa. The turbine isentropic efficiency is 0.884, and mechanical loss..
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streptomycin an antibiotic is produced on a large scale in theunited states. the purified solution contains 50 wt
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determine the minimum initial velocity at which the ball must be kicked in order for it to just cross over the 3m high
A closed system consisting of 8.25 lb of a gas undergoes a process during which the relation between pressure and volume is pV^n = constant. The process begins with p1 = 18 lbf/in^2 , v1 = 1.25 ft^3 /lb and ends with p2 = 53 lbf/in^2 , v2 = 0.5 ft^3 ..
a 100 n cube slides down an inclined plane of 30 degrees with the horizontal. a fluid film of 0.2 mm thick separates
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