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The feasibility and design of high pressure wick evaporators for refrigeration machines.

Author(s) : KOSOY B.

Summary

Conventional two-phase loop systems (for example, refrigeration heat pipes) provide potentially compact thermal transport solutions with the high efficiency and isothermal characteristics of liquid-vapour phase change. Moreover, passive circulation of the working fluid in refrigeration cycles with non-mechanical compression is not new. Application of high-porosity permeable structures with median surface pore diameters in the order of a few nanometers allows to construct capillary pumps across which can be maintained both large pressure (>1 MPa) and large temperature (>100 K) differentials. These capillary pumps represent high performance wick evaporators. The study considers thermodynamic fundamentals of capillary pumped refrigerators with respect to physical and technological constrains and design availability, and identify the possible directions for further research.

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Details

  • Original title: The feasibility and design of high pressure wick evaporators for refrigeration machines.
  • Record ID : 2004-2181
  • Languages: English
  • Source: 21st IIR International Congress of Refrigeration: Serving the Needs of Mankind.
  • Publication date: 2003/08/17

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