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Heat transformation with the ternary working fluid TFE-water-E181.

Author(s) : STEPHAN K., HERGERER R.

Type of article: Periodical article

Summary

The authors have investigated the use of a ternary mixture of trifluoroethanol (TFE), tetraethylenglycoldimethylether (E181) and water as a working fluid for an absorption cycle. Previous investigation of a binary mixture of TFE and E181 showed promise, but TFE has a low enthalpy of evaporation and poor heat transfer characteristics. The addition of water, making a TFE-water solution, improves these points. The paper gives a full review of the thermodynamic properties of the ternary fluid, its thermal and chemical stability, vapour-liquid equilibrium, enthalpy, density and viscosity, and thermal conductivity. The use of the fluid in a complete cycle is explained and its limits are defined. The conclusion is that the ternary mixture is a promising alternative to other fluids, but even so the COP is unlikely to be any better than that of a lithium bromide-water system. D.W.H.

Details

  • Original title: Heat transformation with the ternary working fluid TFE-water-E181.
  • Record ID : 1993-1402
  • Languages: English
  • Source: Inst. Refrig., Adv. Proof - 9 p.; 13 fig.; 5 tabl.; 19 ref.
  • Publication date: 1992/04/02
  • Document available for consultation in the library of the IIR headquarters only.

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