Isothermal compressibility & Volume expansitivity

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SUMMARY

This discussion focuses on the equations for isothermal compressibility and volume expansivity specifically for refrigerants in both liquid and gaseous phases. Key resources mentioned include the International Critical Tables, JANAF, and Perry's Chemical Engineers' Handbook, which provide essential data for these properties. The user is advised to explore public domain resources and scientific literature for comprehensive refrigerant property data. The equation for internal energy change in gases, ΔUgas = 1.5kT = 0.5mv^2, is also highlighted as relevant to the topic.

PREREQUISITES
  • Understanding of thermodynamic properties, specifically isothermal compressibility and volume expansivity.
  • Familiarity with refrigerants and their phases (liquid and gaseous).
  • Knowledge of thermodynamic equations and their applications in engineering.
  • Access to scientific literature and databases for refrigerant properties.
NEXT STEPS
  • Research the International Critical Tables for comprehensive refrigerant data.
  • Explore JANAF tables for thermodynamic properties of gases.
  • Study Perry's Chemical Engineers' Handbook for detailed equations and applications.
  • Investigate HVAC handbooks for practical applications of compressibility and expansivity in refrigeration systems.
USEFUL FOR

Engineers, researchers, and students in thermodynamics, particularly those working with refrigerants and HVAC systems, will benefit from this discussion.

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I need equations for Isothermal compressibility & Volume expansitivity in terms of temperature and pressure. Please help. It is for refrigerants in both liquid but especially gaseous phase.

Ade:wink:
 
Science news on Phys.org
http://www.ari.org/er/tu/1993/9308c.html
http://www.eere.energy.gov/buildings/tools_directory/software/engineeringtoolbox.htm
http://www.heatpumpcentre.org/activity/an18.htm

These all want money --- you might find useful data in the "public domain" if you hit the library --- see the International Critical Tables (you haven't said WHAT refrigerants), or JANAF, or Perry's, or odd handbooks on cryogenics, or HVAC hndbks, or hit Sci. Cit, Chem. Abstracts, Phys. Abstracts for refrigerant properties.
 
Last edited by a moderator:
ΔUgas = 1.5kT = 0.5mv^2
 

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