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

[@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

[@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.

[@syed_taha_ahmed]

What is difference between isoentropic efficiency and thermal efficiency..

[@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

[@UmerMujtaba67]

W

[@harrisondrury2515]

How tf am I paying thousands for shitty material when I can get it here for free & explained 1000000x better.