Share

IIR document

An expression for the excess Gibbs function of the liquid R22/DTG mixture.

Author(s) : VISSERS F. P. L. M.

Summary

In the context of a research project on the combined heat- and mass transfer in falling liquid films, a test absorber working with R22 as refrigerant and DTG or dimethylether tetraethyleneglycol as absorbent, was built. In order to compare the results of numerical simulations with the outcome of the experiments, it was necessary to know the thermophysical data of the mixture. One of the most important properties is the heat of mixing. As direct measurements of the latter are rather scarce and not too reliable, an expression was set up for the excess Gibbs function from which the mixing enthalpy could be calculated. This procedure made it possible to incorporate measurements of the equilibrium pressure of the mixture, which are much more extensive and reliable, into the fitting procedure.

Available documents

Format PDF

Pages: 263-271

This document is to be digitised and will be available within 10 working days

  • Public price

    20 €

  • Member price*

    Free

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: An expression for the excess Gibbs function of the liquid R22/DTG mixture.
  • Record ID : 1994-0837
  • Languages: English
  • Source: Energy Efficiency in Refrigeration and Global Warming Impact.
  • Publication date: 1993/05/12
  • Document available for consultation in the library of the IIR headquarters only.

Links


See other articles from the proceedings (34)
See the conference proceedings

Indexing