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# A pistoncylinder assembly contains air modeled as an ideal

ISBN: 9781118412930 139

## Solution for problem 3.144 Chapter 3

Fundamentals of Engineering Thermodynamics | 8th Edition

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Fundamentals of Engineering Thermodynamics | 8th Edition

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Problem 3.144

A pistoncylinder assembly contains air modeled as an ideal gas with a constant specific heat ratio, k 5 1.4. The air undergoes a power cycle consisting of four processes in series: Process 12: Constant-temperature expansion at 600 K from p1 5 0.5 MPa to p2 5 0.4 MPa.Process 23: Polytropic expansion with n 5 k to p3 5 0.3 MPa.Process 34: Constant-pressure compression to V4 5 V1.Process 41: Constant-volume heating.Sketch the cycle on a p diagram. Determine (a) the workand heat transfer for each process, in kJ/kg, and (d) thethermal efficiency.

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 7 kings of Rome o Livy is the best source of info on the 7 kings  However, he lived much after this time o Monarchy was from 753-509 BC o Romulus: 753-716 BC  Numitor - king of alba longa  Romulus was his grandson  Raised by a shepherd after being throw into a river  Romulus began building on the palatine hill  Remus jumped over the pomerium  So Romulus killed him  He built Rome but it had no women  Invited the Sabine's to dinner  The

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A pistoncylinder assembly contains air modeled as an ideal