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| Teaching Since: | May 2017 |
| Last Sign in: | 408 Weeks Ago, 6 Days Ago |
| Questions Answered: | 66690 |
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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
1. A piston/cylinder contains 0.25 kg of R-134a at 100 kPa. It will be compressed in an adiabatic reversible process to 400 kPa and should be at 70â—¦C. What should the initial temperature be?
2. A piston/cylinder contains 0.5 kg of water at 200 kPa, 300â—¦C, and it now cools to 150â—¦C in an isobaric process. The heat goes into a heat engine that rejects heat to the ambient at 25â—¦C (shown in Fig. P6.46), and the whole process is assumed to be reversible. Find the heat transfer out of the water and the work given out by the heat engine.

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