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A Carnot heat engine receives heat from a reservoir at 900C at a rate of 800 kJ/min and rejects the waste heat to the ambient air at 27C. The entire work output of the heat engine is used to drive a refrigerator that removes heat from the refrigerated space at -5C and transfers it to the same ambient air at 27C. Determine (a) the maximum rate of heat removal from the refrigerated space and (b) the total rate of heat rejection to the ambient air.
A luge and its rider, with a total mass of 98 kg, emerge from a downhill track onto a horizontal straight track with an initial speed of 39 m/s.
an air-standard diesel cycle operates with a compression ratio of 18. at the beginning of the compression process the
a stack gas flowing at 80 m3min at t 25 degree c and 1 atm contains approximately 75 n2 5 o2 8 h2o and 12 co2. a
water as steam enters an adiabatic turbine at 6 mpa and 600 c with a flow rate of 5 kgs. after exiting the turbine the
it is proposed that solar energy be used to warm a large collector plate. this energy would in turn be transferred as
a cogeneration plant on the cylce shown below. for the purpose of this problem the gas can be considered to be air. if
nitrogen gas at 60 kpa and 7 degrees celsius enter an adiabatic diffuser steadily with a velocity of 195 ms and leaves
the crate containing 40 bricks sits on a slopped conveyor belt which is used to raise the crate to the next level of
prepare a journal papernbsp the journal paper inhibits -nbsp abstract-nbsp introductionnbsp literature reviewsnbsp
water steam at 3mpa and 400oc is expanded to 100kpa in an adiabatic turbine with an isentropic efficiency of 92.
A Pitot-static probe connected to a water manometer is used to measure the velocity of air. If the deflection (the vertical distance between the fluid levels in the two arms) is 7.3 cm, determine the air velocity. Take the density of air to be 1.2..
the fluid used is r-134a. the flow of r-134a is 70 lbmmin. if r-134a enters a compressor at -10 deg f and is a
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