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Investigation of operation limits of vapor-liquid ejector working with natural refrigerants.

Number: 1030

Author(s) : HUANG H. Y., CHEN J. Y.

Summary

The vapor-liquid ejector, a flow device that uses the primary vapor flow to entrain the secondary liquid flow and lift pressure without consuming any external mechanical energy, has a very interesting characteristic of delivering the mixing flow to a pressure that higher than both primary flow and secondary flow. In this paper, the effects of the vapor nozzle inlet temperature, the entrainment ratio and area ratio are parametrically studied with three natural refrigerants, namely: hexane, pentane and toluene/heptane (0.5/0.5). The result shows the mixture has higher pressure lift ratio (PR) than the other two pure candidates. The optimum temperature at vapor nozzle inlet that maximizes the PR is found. The operation limits of discussed variables are identified. It is of significance to reveal the insights for the working characteristic evaluations and designing of the vaporliquid ejector.

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Pages: 6p.

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Details

  • Original title: Investigation of operation limits of vapor-liquid ejector working with natural refrigerants.
  • Record ID : 30027896
  • Languages: English
  • Subject: Technology
  • Source: 14th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2020). Proceedings. Kyoto, Japon, December 7-9th 2020.
  • Publication date: 2020/12/07
  • DOI: http://dx.doi.org/10.18462/iir.gl.2020.1030
  • Document available for consultation in the library of the IIR headquarters only.

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