Engineering, 30.11.2019 01:31 kerra61
5.43 a refrigeration cycle operating between two reservoirs receives energy qc from a cold reservoir at tc 5 275 k and rejects energy qh to a hot reservoir at th 5 315 k. for each of the following cases, determine whether the cycle operates reversibly, operates irreversibly, or is impossible: (a) qc 5 1000 kj, wcycle 5 80 kj. (b) qc 5 1200 kj, qh 5 2000 kj. (c) qh 5 1575 kj, wcycle 5 200 kj. (d)  5 6.
Answers: 3
Engineering, 03.07.2019 14:10, makaylashrout77
Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.
Answers: 2
Engineering, 03.07.2019 15:10, breannaasmith1122
Two flowing streams of argon gas are adiabatically mixed to form a single flow/stream. one stream is 1.5 kg/s at 400 kpa and 200 c while the second stream is 2kg/s at 500 kpa and 100 ? . it is stated that the exit state of the mixed single flow of argon gas is 150 c and 300 kpa. assuming there is no work output or input during the mixing process, does this process violate either the first or the second law or both? explain and state all your assumptions.
Answers: 1
Engineering, 04.07.2019 18:10, lerasteidl
Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?
Answers: 3
5.43 a refrigeration cycle operating between two reservoirs receives energy qc from a cold reservoir...
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