Turbines, Compressors, and Pumps - ISENTROPIC EFFICIENCY in 8 Minutes!

Isentropic Efficiency
Turbine Efficiency
Compressor Efficiency
Pump Efficiency
0:00 Isentropic Efficiency General Definition
0:20 Turbine Isentropic Efficiency
0:33 Compressor/Pump Isentropic Efficiency
1:00 Turbine Efficiency in Terms of Enthalpy
2:53 Compressing Efficiency in Terms of Enthalpy
4:22 Example - Turbine Isentropic Efficiency
5:06 Solution to Example
Example 1: • Using Isentropic Effic...
Example 2: • Using Isentropic Effic...
Example 3: • Calculating Isentropic...
Reference Entropy and Specific Heat Link:
• REFERENCE ENTROPY and ...
Previous Lecture:
24. Reference Entropy and Specific Heats:
• REFERENCE ENTROPY and ...
Next Lecture:
26. Brayton Cycle:
• Ideal BRAYTON CYCLE Ex...
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Other Thermodynamics Lectures:
1. Thermodynamics Intro and Units Review: • THERMODYNAMICS Basic U...
2. Zeroth Law of Thermodynamics: • ZEROTH LAW of Thermody...
3. Closed vs. Open Systems & Intensive vs. Extensive Properties: • CONTROL VOLUMES - Clos...
4. First Law and Energy Types: • Energy Conservation Eq...
5. Efficiency in Thermodynamic Systems: • EFFICIENCY of Thermody...
6. Five Regions of T-v Diagrams: • T-v Diagrams and PROPE...
7. Interpolating and Quality Derivation: • INTERPOLATION for Ther...
8. Enthalpy and Internal Energy: • ENTHALPY and INTERNAL ...
9. Compressed Liquid Properties: • Thermodynamics COMPRES...
10. Ideal Gas and Compressibility Factor: • Ideal Gas Equation and...
11. Specific Heats: • Thermodynamics SPECIFI...
12. Specific Heat Relationships of Ideal Gases and Incompressible Substances: • Specific Heat and Ener...
13. Polytropic Process Work: • Work Expressions for P...
14. Mass and Volumetric Flow Rate: • Volumetric and MASS FL...
15. Flow Work and Energy Conservation in Open Systems: • FLOW WORK & Energy Con...
16. Pipe Flow, Nozzles, Diffusers, and Throttling Devices: • Pipe Flow, Nozzles, Di...
17. Turbines, Compressors, and Pumps: • Thermodynamics - Turbi...
18. Mixing Chambers and Heat Exchangers: • Heat Exchangers and Mi...
19. Transient Systems:
20. Second Law Intro and Power Cycles: • 2nd Law Intro and POWE...
21. Refrigerators and Heat Pumps: • REFRIGERATION and Heat...
22. Carnot Cycles and Reversible Processes: • Reversible Processes a...
23. Entropy as a Thermodynamic Property: • Thermodynamics - ENTRO...
24. Reference Entropy and Specific Heats: • REFERENCE ENTROPY and ...
25. Isentropic Efficiency: • Turbines, Compressors,...
26. Brayton Cycle: • Ideal BRAYTON CYCLE Ex...
27. Intercooling, Reheating, and Regenerators: • Regeneration, Intercoo...
28. Otto Cycle:
29. Standard Diesel Cycle:
30. Rankine Cycle:
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Other Engineering Courses (Playlists):
/ lessboringlectures
Statics: • Statics: Engineering M...
Mechanics of Materials: • Mechanics of Materials
Machine Design: • Mechanical Engineering...
SolidWorks (CAD): • SolidWorks (CAD)
Fluid Mechanics: • Fluid Mechanics

[@LessBoringLectures]

Minor Correction: 4:40 The schematic of a turbine should show the gas expanding, not compressing (right side should be larger than left side).

[@gwv8647]

isn't there an error at 3:54 , shouldn't Nc = (h2s-h1)/h2a-h1 ? Also i have these common types of questions when they ask to solve for the W(in) for a system usually adiabatic and isentropic but they always seem to exclude the mass, ( W(in) = m(h2-h1) => W(in)= h2-h1 ), this was the question more specifically.......(below) "Air enters a compressor steadily at the ambient conditions of 100 kPa and 22°C and leaves at 800 kPa. Heat is lost from the compressor in the amount of 120 kJ/kg, and the air experiences an entropy decrease of 0.40 kJ/kg·K. Using constant specific heats, determine (i) the exit temperature of the air, (ii) the work input to the compressor, and (iii) the entropy generation during this process. Answer: (i) 85.8 °C, (ii) 184.1 kJ/kg, (iii) 0.0068 kJ/kg.K."

[@justRD1]

I very much appreciate how much information you pack into these short episodes. I have referenced your videos in several of my design projects and you genuinely help me understand relationships that are not emphasized in traditional textbook form. Thanks for what you do!

[@fahreddinsengul1104]

Your videos are awesome, I was scared when I saw that you were not uploading anymore. I am very happy to see you again :)

[@Mech.E]

I will try to follow the whole thermodynamics playlist and hopefully I will finally pass this subject next year! My issue is I quickly lose oversight and dont practice nearly enough.

[@maureenconverse5149]

This is very helpful, thanks!

[@kylecatman7738]

You drew the argon turbine as a compressor (5 min mark), great job on all these btw!!

[@kylecatman7738]

Sorry, saw you made the correction

[@syed_taha_ahmed]

What is difference between isoentropic efficiency and thermal efficiency..

[@thiagoponchio]

Fantastic! Please say what is the App you use for your videos. Samsung Notes?

[@mayurdahiwale5907]

All i know is he uses iPad, he mentioned it in a comment on some video

[@dylanw4297]

@@mayurdahiwale5907 yes, he mentioned that he uses the notes app on the ipad.

[@juohan]

Isentropic compression is the ideal process that requires least amount of work input. But why isothermal and polytropic compression has lower work between same pressure limits?

[@kylecatman7738]

Polytropic means both pressure AND volume are changing. Poly = multi