when you refer to point B as the max efficiency, i am not sure in term of what? I think when you are operating at point B, your discharge pressure is high, therefore you put more work on the motor and less mass flow rate...please clarify...also can you explain the IGV (inlet guide vane) how does that play a role in your discharge pressure and flow rate?
In the industry actually most efficient operating point is closer to E since most processes need constant pressure application. Remember this is a theorical review of a centrifugal compressor curve just to demonstrate its critical points, i think we can assume inlet valve is wide open and no valve control is applied, again just for demonstration purposes since controllers avoid choke and surge by adjusting both inlet and discharge valve.
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Thanks for this useful video. I have questions. Surge happens the gas flow first becomes steady and then reverses right? But choke happens gas flow increases excessively and what happens in this situation?
Flow speed in some point of the compressor reaches value of Mach 1. For speed to go above this value, which corresponds to an increase in mass flow rate, you would need a convergent-divergent section, such as the ones found in steam turbines (which are in fact used to accelerate the flow above Mach 1). Since a compressor is not designed for such purpose, and the section is simply divergent, this means that when M=1 is reached there is no further increase of mass flow rate. Mass flow rate = density * Area of section * velocity.
Your positive comment motivates me. My goal is to create largest community of engineers in entire globe. Please help me by sharing this video or channel with your friends.
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Why there is pressure ratio in y axis? Ration is taken between which two pressure point ? Everyone is making video explaining the graph only no one talks about the actual significance.
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when you refer to point B as the max efficiency, i am not sure in term of what? I think when you are operating at point B, your discharge pressure is high, therefore you put more work on the motor and less mass flow rate...please clarify...also can you explain the IGV (inlet guide vane) how does that play a role in your discharge pressure and flow rate?
In the industry actually most efficient operating point is closer to E since most processes need constant pressure application. Remember this is a theorical review of a centrifugal compressor curve just to demonstrate its critical points, i think we can assume inlet valve is wide open and no valve control is applied, again just for demonstration purposes since controllers avoid choke and surge by adjusting both inlet and discharge valve.
Very useful information, explained in simple terms and a clean graphic. Thanks
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very helpful video sir, thank you
Welcome.
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It was a very useful video. Thanks.
Thank you for comment.
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Thanks for this useful video. I have questions. Surge happens the gas flow first becomes steady and then reverses right? But choke happens gas flow increases excessively and what happens in this situation?
Flow speed in some point of the compressor reaches value of Mach 1. For speed to go above this value, which corresponds to an increase in mass flow rate, you would need a convergent-divergent section, such as the ones found in steam turbines (which are in fact used to accelerate the flow above Mach 1). Since a compressor is not designed for such purpose, and the section is simply divergent, this means that when M=1 is reached there is no further increase of mass flow rate.
Mass flow rate = density * Area of section * velocity.
nice piece of work
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Please sir make vedio on efficiency of compressor
My thanks! God bless you!
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brilliant work
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Wow! thanks ! the graph is so useful ! :)
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Thank you so much for sharing knowledge.
You r from Gujarat.. right? And more specifically from Surat or Bharuch..🤔
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Yes i am from surat.
Why there is pressure ratio in y axis?
Ration is taken between which two pressure point ?
Everyone is making video explaining the graph only no one talks about the actual significance.
What is pressure ratio
Thanks
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@@bestmechanicalengineering yes
Thank you!
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thank you for Comment
thank you ....
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can u give me your references?
Lol
@AryanBhole563 why
Thank you to make wonderful vedio❤🩹🤟
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Thanks
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