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  1. Polytropic process | Eng-Tips

    Aug 14, 2005 · Can a polytropic process define a problem in which flow occurs? pv^n = constant I raise this question because I have been under the impression that this process is where the …

  2. Difference Between Isentropic Process and Polytropic Process?

    Feb 5, 2013 · Thank you for your question. Let me start with the basics. Understanding thermodynamics often requires one to delve into the world of isentropic and

  3. work in polytropic process...a bit confusing | Eng-Tips

    Apr 15, 2009 · When we talk about control volume, isentropic internally reversible process (isn't above one also reversible???) then work is defined as W = -∫Vdp and for polytropic process for …

  4. Answered: Air in a closed-piston cylinder is initially at ... - bartleby

    Air in a closed-piston cylinder is initially at 100 kPa and 27°C. It is then compressed until the pressure reaches 2 MPa in a polytropic process with n = 1.3. Determine how much boundary …

  5. Discuss Isentropic, Isothermal, Polytropic Process - Eng-Tips

    Sep 12, 2006 · I assume that without intercooling the operation would be Polytropic. Is it correct to say that in an Polytropic process some cooling applies, therefore, somewhere in between …

  6. Answered: A polytropic process of air from 150 psia, 300°F

    A polytropic process of air from 150 psia, 300°F, and 1 ft3 occurs to P2 = 20 psia in accordance with PV1.3 : C. Determine (a) t2 and V2, (b) AU, AH and AS, (c) S pdV and - S Vdp, (d) …

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    • Polytropic efficiency of turbomachinery | Eng-Tips

      Mar 27, 2005 · Polytropic process accounts for the path (small stages) where as isentropic only considers the start and end point. Using polytropic efficiency gives a more accurate calculation …

    • Answered: A polytropic process of air from 150 psia, 300°F

      A polytropic process of air from 150 psia, 300°F, and 1 ft3 occurs to P = 20 psia in accordance with PV1.3 = 2 C. Determine (a) t and V , (b) ∆U, ∆H and ∆S, (c) 22 ∫ pdV and - ∫ Vdp, (d) …

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      • Answered: A closed system consisting of 10 lb of air undergoes a ...

        A closed system consisting of 10 lb of air undergoes a polytropic process from p₁-70 lbf/in², v₁-4 ft³/lb to a final state where p2 - 20 lbf/in², v₂-12 ft³/lb. Determine the polytropic exponent, n, and …

      • Argon is compressed in a polytropic process with n = 1.2

        Argon is compressed in a polytropic process with n = 1.2 from 120 kPa and 10°C to 800 kPa in a piston-cylinder device. Determine the work produced and heat transferred during this …