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Development and analysis of miniature vapour compression cooling technology.

Number: pap. ID: 244

Author(s) : ELBEL S., BOWERS C. D., ZHAO H., et al.

Summary

Miniature cooling systems have lately gained increased attention due to ever increasing needs to locally cool hot spots. Miniaturized cooling is needed in a variety of different applications, for example to cool powerful yet highly compact electronics or to increase the thermal comfort of individuals through man-mounted systems. This paper focuses on the development of components suitable to be used in miniaturized vapour compression systems. Of particular interest is the achievable cooling output to system mass ratio. Miniaturized aluminum microchannel heat exchangers, positive displacement compressors, and passive expansion devices have been designed, developed, and investigated both experimentally and numerically. Relevant performance data are presented and improvement potentials are revealed and assessed. A measured cooling capacity of 57 W at 35°C and a system mass of 2.2 kg (including power source) yields, with 26 W/kg one of the highest cooling output to system mass ratios ever reported in the open literature available for miniature cooling technology. It is clear that vapour compression technology can outperform many other approaches, including cooling systems based on phase change materials with respect to cooling output per unit mass.

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Details

  • Original title: Development and analysis of miniature vapour compression cooling technology.
  • Record ID : 30002321
  • Languages: English
  • Source: Proceedings of the 23rd IIR International Congress of Refrigeration: Prague, Czech Republic, August 21-26, 2011. Overarching theme: Refrigeration for Sustainable Development.
  • Publication date: 2011/08/21

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