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1 a gas turbine with air flowing in at 1200 kpa 1200 k has an exit pressure of 200 kpa and an isentropic efficiency of
a certain industrial process requires a steady 05 kgs supply of compressed air at 500 kpa at a maximum temperature of
1 carbon dioxide flows through a device entering at 300 k 200 kpa and leaving at 500 k the process is steady state
air at 100 kpa 17c is compressed to 400 kpa after which it is expanded through a nozzle back to the atmosphere the
assume that an actual compressor has the same exit pressure and specific heat transfer as the ideal isothermal
1 a nozzle in a high-pressure liquid water sprayer has an area of 05 cm2 it receives water at 350 kpa 20c and the exit
1 air enters an insulated turbine at 50c and exits the turbine at -30c 100 kpa the isentropic turbine efficiency is 70
1 a centrifugal compressor takes in ambient air at 100 kpa 17c and discharges it at 450 kpa the compressor has an
find the isentropic efficiency of the nozzle in example 44example 44steam at 06 mpa and 200c enters an insulated nozzle
repeat problem 746 assuming the steam turbine and the air compressor each has an isentropic efficiency of 80problem
1 a compressor in a commercial refrigerator receives r-410a at -10 f and unknown quality the exit is at 300 psia 140 f
1 a rock bed consists of 6000 kg granite and is at 70c a small house with a lumped mass of 12 000 kg wood and 1000 kg
1 an air compressor receives atmospheric air at t0 17c 100 kpa and compresses it to 1400 kpa the compressor has an
fresh water can be produced from salt water by evaporation and subsequent condensation an example is shown in fig p845
1 a constant-pressure pistoncylinder contains 2 kg of water at 5 mpa and 100c heat is added from a reservoir at 600c to
calculate the irreversibility for the condenser in problem 7100 assuming an ambient temperature of 17cproblem 7100a
1 find the specific reversible work for a steam turbine with inlet 4 mpa 500c and an actual exit state of 100 kpa x 10
the water cooler in problem 524 operates steady state find the rate of exergy destruction irreversibilityproblem 524an
air enters the turbocharger compressor see figp851 of an automotive engine at 100 kpa 30c and exits at 200 kpa the air
1 a constant-pressure pistoncylinder has 1 kg of saturated liquid water at 100 kpa a rigid tank contains air at 1000 k
calculate the exergy of the water at the initial and final states in problem 6130 and the irreversibility of the
1 compressed air for machines and tools in a plant is generated by a central compressor receiving air at 100 kpa 300 k
1 apply the exergy equation to solve problem 818problem 818a refrigerator should remove 15 kw from the cold space at
estimate some reasonable temperatures to use and find all the fluxes of exergy in the refrigerator in example 52example
find the specific flow exergy into and out of the steam turbine in example 71 assuming an ambient at 293 k use the