Understanding the Science of Compressed Water: A Deep Dive with Bob

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SUMMARY

Water is compressible, contrary to the common assumption of it being incompressible for simplification in various applications. In water jet cutting, pressures of 60,000 PSI can compress water by approximately 13%. At around 150,000 PSI, water begins to freeze, which is a phenomenon explained by its phase diagram. The relationship between pressure, temperature, and phase transitions is crucial for understanding the behavior of water under extreme conditions.

PREREQUISITES
  • Understanding of water's physical properties
  • Familiarity with pressure units, specifically PSI
  • Knowledge of phase diagrams and phase transitions
  • Basic principles of thermodynamics, particularly latent heat
NEXT STEPS
  • Study the phase diagram of water in detail
  • Research the effects of high-pressure environments on water properties
  • Learn about latent heat and its role in phase transitions
  • Explore applications of water jet cutting technology
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Scientists, engineers, and students interested in fluid dynamics, thermodynamics, and applications of high-pressure water systems.

capnahab
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Sirs, I have always understood that water cannot be compressed but I have been informed by competent people that it can. We use water jet cutting at 60KPSI and I am told that this water compresses by 13%. While I can accept this I do not understand why at app. 150K PSI the water freezes and that pressure is the limit. It seems to me that compressed water should gain heat and not get colder. Would you gentlemen/gentlewomen please explain? Old science nut, Bob
 
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For many purposes, you assume water to be incompressible just to simplify problems, but it is actually compressible.

And yes, if you compress it it heats up, but you can then let it cool back down. Whether it freezes or not at a certain temperature and pressure depends on where that is on the phase diagram: http://www.lsbu.ac.uk/water/phase.html
 
Thank you for the phase diagram. They always told me it was latent heat but I could never understand latent heat. I always thought that is was phase transistion. Too many words do decscribe the same thing.
 

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