Gas Turbine & Psychrometric chart

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Discussion Overview

The discussion centers around understanding the Psychrometric chart and its implications for gas turbines, particularly regarding air quality, humidity, dew point, and the risk of moisture condensation in compressors. Participants explore the physical meanings and applications of these concepts in the context of gas turbine operation.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • One participant expresses difficulty in understanding the Psychrometric chart and its relevance to dew point, pressure, and humidity in relation to gas turbines.
  • Another participant mentions that modern engines can handle significant amounts of rain without major issues, referencing rigorous engine integrity tests.
  • A participant suggests that an increase in pressure can lead to the condensation of water vapor, linking this to the Psychrometric chart.
  • There is a reference to cloud chamber experiments as a way to recall concepts related to water vapor formation and condensation.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the implications of pressure changes on condensation, as some assert that pressure increases lead to condensation, while others focus on the ability of engines to handle moisture without problems. The discussion remains unresolved regarding the fundamental understanding of the Psychrometric chart.

Contextual Notes

Some assumptions about the relationship between pressure, humidity, and condensation are not fully explored, and there are references to external sources for learning that may not be universally accessible or agreed upon.

masa
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Hi Everyone,
So I seem to have many problems understanding the Psychrometric chart and its physical meaning. First of all, I would be so thankful if you could introduce me a source which can be useful to physically and fundamentally understand the dew point, effect of pressure, humidity... and better to say Psychrometric chart.

Actually I was reading some articles about gas turbine, and I have started to think about the air input, its quality, and the risk of moisture and consequently corrosion. There should be a risk of water drops in compressor if the vapor in inlet air condenses... It is here where my problem with psychometry starts... so if the compressor increases the pressure of air, it means that the probability of condensation increases or decreases?

I hope you can help me understand the fundamental of psychometry, I feel embarrassed not to understand it well :)
 
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Modern engines can ingest huge amounts of rain without too many problems .

http://www.wired.com/2014/11/how-ge-tests-jet-engines/

The engine integrity tests carried out are very rigorous and include rain , hail , cowling ice , frozen chickens and deliberately broken fan blades .
 
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Likes   Reactions: Greg Bernhardt
Check out this site for learning about the Psychrometric Chart. Yes an increase in pressure can cause water vapor to condense.

Edit: Here's the link http://www.powerknot.com/how-to-read-and-use-a-psychrometric-chart.html
I failed at embedding it.
 
Last edited:
AndrewHolowack said:
Check out this site for learning about the Psychrometric Chart. Yes an increase in pressure can cause water vapor to condense.
Which site is that? There's no link apparent.
 
Regarding water vapour formation and condensation - anyone remember the cloud chamber experiments from school days ?
 
Thnaks everyone!
 

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