Thermodynamics,subcooled liquid

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SUMMARY

The discussion focuses on determining the final pressure of a subcooled liquid, specifically water in a rigid tank, when its temperature is increased. The user seeks a relationship to calculate final pressure given initial conditions and final temperature, noting the scarcity of information on subcooled liquids in thermodynamic literature. The conversation highlights the need for property tables that extend beyond the limited range of 5 MPa to 30 MPa, emphasizing the importance of understanding the relationship between heat added and internal energy increment.

PREREQUISITES
  • Understanding of thermodynamic principles, particularly regarding phase changes.
  • Familiarity with the properties of water as a subcooled liquid.
  • Knowledge of pressure-temperature relationships in rigid tanks.
  • Experience with thermodynamic property tables and their limitations.
NEXT STEPS
  • Research the thermodynamic properties of subcooled liquids using the IAPWS-IF97 formulation.
  • Study the application of the First Law of Thermodynamics to rigid tanks.
  • Explore advanced property tables for water beyond 30 MPa, such as those provided by NIST.
  • Learn about the calculation of internal energy changes in subcooled liquids under varying pressure and temperature conditions.
USEFUL FOR

Thermodynamics students, engineers working with fluid systems, and professionals involved in heat transfer and pressure management in subcooled liquid applications.

engnr_arsalan
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hi all,
i need to know what relation should i used for subcooled liquid, for example,a rigid tank is filled with water,as its temp is increased its pressure is increased.if i know the initial conditions and final temperature.how should i find out final pressure. i have seen in thermodynamic books but there is very less info about subcooled liquid.also property table is limited for high pressures only from 5Mpa to 30 Mpa.
 
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Try considering that the heat added is equal to the increment on internal energy of the water. Which are the initial conditions, the final temperature and the amount of heat per unit mass or unit quantity of matter?
 

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