Specific Heat of Liquid Saturation Line and Vapour Saturation Line in RefProp

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SUMMARY

The discussion focuses on the specific heats represented in the saturation lines for water plotted using RefProp, specifically highlighting the "Draw Saturation Lines" feature. The saturation lines illustrate the relationship between pressure coefficients and temperature for water outside of vapor-liquid equilibrium. The inquiry centers on understanding the conditions represented by the liquid and vapor saturation lines, as well as the asymptotic increase in specific heat at varying pressures.

PREREQUISITES
  • Understanding of thermodynamic properties, specifically specific heat.
  • Familiarity with RefProp software for thermodynamic calculations.
  • Knowledge of vapor-liquid equilibrium concepts.
  • Basic grasp of pressure-temperature relationships in phase changes.
NEXT STEPS
  • Explore the RefProp documentation for detailed explanations of saturation lines.
  • Research the principles of vapor-liquid equilibrium and its implications on specific heat.
  • Learn about the mathematical modeling of specific heats in thermodynamic systems.
  • Investigate the effects of pressure on the specific heat of water and other fluids.
USEFUL FOR

This discussion is beneficial for thermodynamic engineers, researchers in fluid mechanics, and students studying heat transfer and phase change phenomena.

terryphi
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Hello There,

So I made a plot of some specific heats in refprop, and I chose the "Draw Saturation Lines" option. When I did this, the follow chart was produced.

http://i.imgur.com/h34Pq.png

Now my question is, what are these saturation lines representing?

-TP
 
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I don't understand the question. Are you asking what saturation means? or what the graph is representing as a whole?

It's just showing you the change in pressure coefficient against temperature for water when it's not in vapour-liquid equilibrium.
 
Last edited:
What conditions is the water at as represented by are the "liquid saturation lines" and "vapor saturation lines". This is the specific heat of water at what pressure? Why does it increase asymptotically?
 

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