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A Gibbs energy equation for LiBr/H2O solutions.

Author(s) : KIM D. S., INFANTE FERREIRA C. A.

Summary

A Gibbs energy equation has been developed for aqueous LiBr solutions in the concentration range from 0 to 70 wt.% and the temperatures from 0 to 210 °C with the equilibrium pressures ranging from 74 Pa to 1 MPa. Osmotic coefficients were determined using 405 experimental solution density and 496 vapour pressure data points from the literature. A function for the enthalpy of infinitely dilute solution was determined using experimental heat capacity data. The resulting enthalpy, heat capacity and entropy values are compared with literature values and the comparative analysis results are critically evaluated. The results of this study would be useful especially for the systems where the solution undergoes large concentration (or pressure differences such as low-temperature driven multi-stage solar cycles and power cycles where the solutions would be exposed to high-pressure environments).

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Pages: 2004-2

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Details

  • Original title: A Gibbs energy equation for LiBr/H2O solutions.
  • Record ID : 2005-1843
  • Languages: English
  • Source: Natural Working Fluids 2004: 6th IIR-Gustav Lorentzen Conference
  • Publication date: 2004/08/01

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