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An experimental study on the performance characteristics of the serial micro gas compressors.

Author(s) : CHOI J. W., YOON J. S., KIM M. S.

Summary

The micro gas compressor was designed and fabricated on three silicon layers with a silicon membrane, compression chamber and cantilever check valves. The working fluid R123 is driven by a piezoelectric actuator, which is attached to the silicon membrane. Furthermore, the comparison of the performance with one microgas compressor and that with two serial microgas compressors have been done for various parameters, which are the back pressure, input has voltages and vibrating frequencies applied to the PZT actuator. The performance curves mainly depend on the voltage rather than the frequency, because the higher voltage causes the larger stroke volume and eventually brings about a higher stroke ratio. Consequently, the voltage should be kept high for a robust operation. In the process of single compression, the largest flow rate is 0.98 g/h and the highest discharge to suction pressure ratio is 1.17. Additionally, in the case of the serial compressors, the former is 0.74 g/h and the latter is 1.30, which means pressure ratio becomes higher in the two stage compression processes while the mass flow rate decreases a little.

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Pages: pp. 133-137

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Details

  • Original title: An experimental study on the performance characteristics of the serial micro gas compressors.
  • Record ID : 2010-0756
  • Languages: English
  • Source: ACRA-2009. The proceedings of the 4th Asian conference on refrigeration and air conditioning: May 20-22, 2009, Taipei, R.O.C.
  • Publication date: 2009/05/20

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