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An alternative method for the cooling of power microelectronics using classical refrigeration.

Alternativni metod hladenja mikroelektronike pomocu klasicnog hladenja./ An alternative method for the cooling of power microelectronics using classical refrigeration.

Author(s) : CHIRIAC F., CHIRIAC V.

Summary

This study proposes an efficient mechanical refrigeration system to actively cool the electronic components populating a Printed Circuit Board in a High-Power Microelectronics System. The system includes several miniaturized components (compressor, evaporator, condenser) part of a refrigeration system, designed to fit the smaller scale power electronics. The system is thermally optimized to reach high COP. An array of microchannels is used for the evaporator/condenser units. A previous study indicated that R-134a provides the best COP/feasibility ratio, while being the most suitable for microelectronics applications. The study develops an analytical model of the proposed small-scale vapour compression refrigerator using R-134a. The refrigeration system is thermally optimized for cooling powers ranging from 20-100 W, with the COP of the system reaching values up to 4.5. In the final section of the study, the efficiency of the proposed system is further compared to existing active cooling techniques using thermoelectric coolers. The advantages of the proposed system are highlighted, establishing a baseline performance vs. size relationship for vapour-compression refrigerators, to serve as the basis for comparison for future miniaturized refrigeration systems.

Details

  • Original title: Alternativni metod hladenja mikroelektronike pomocu klasicnog hladenja./ An alternative method for the cooling of power microelectronics using classical refrigeration.
  • Record ID : 2007-0403
  • Languages: Serbian
  • Source: Zbornik radova pisanih za 36. kongres o klimatizaciji, grejanju, hladenju + CD-ROM./ Proceedings of the 36th International HVAC&R congress + CD-ROM.
  • Publication date: 2005/11/02

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