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A thermodynamic approach to calculating the operating osmotic pressure of pressure-driven membrane separation absorption cycles.

Author(s) : SU Y. H., RIFFAT S. B.

Type of article: Article

Summary

Membrane separation of absorption solutions has potential applications in refrigeration technology. Operating osmotic pressure is a basic parameter governing the design and evaluation of a membrane separation absorption system. The study presents a thermodynamic approach to calculate the osmotic pressure of an absorption solution using its density and vapour pressure. A correlation between osmotic pressure, density and vapour pressure has been deduced and a calculation example is given. Furthermore, combination of this correlation with the Clausius-Clapeyron equation has produced a simple and interesting result. For a membrane separation absorption cycle, the operating osmotic pressure required is related to the specific latent heat of refrigerant, operating temperatures and density of the absorption solution.

Details

  • Original title: A thermodynamic approach to calculating the operating osmotic pressure of pressure-driven membrane separation absorption cycles.
  • Record ID : 2005-1212
  • Languages: English
  • Source: International Journal of thermal Sciences - vol. 43 - n. 12
  • Publication date: 2004/12

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