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Industrial heat recovery by absorption/compression heat pump using TFE-H2O-TEGDME working mixture.

Author(s) : BOUROUIS M., NOGUES M., BOER D., et al.

Type of article: Article

Summary

The thermodynamic performance of a single-stage absorption/compression heat pump using the ternary working fluid trifluoroethanol-water-tetraethylenglycol dimethylether (TFE-H2O-TEGDME) for upgrading waste heat has been studied. A simulation program has been developed. In order to establish the optimum operating conditions of the cycle, the flow rate of the weak solution and the compressor volumetric displacement, both per unit of upgraded energy, were carried out versus of water content in the vapour phase. The results obtained show that the operation of the cycle with this ternary system is still more advantageous than the TFE-H2O-TEGDME binary working pair. So, it is possible to upgrade thermal waste heat from 80 to 120 °C, with a COP of about 6.4, with a compression pressure ratio of 4 at a low pressure of 100 kPa, the water mole fraction in the vapour being 42%.

Details

  • Original title: Industrial heat recovery by absorption/compression heat pump using TFE-H2O-TEGDME working mixture.
  • Record ID : 2001-0162
  • Languages: English
  • Source: Applied Thermal Engineering - vol. 20 - n. 4
  • Publication date: 2000/03

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