Numerical investigation of the intercooler of a two-stage refrigerant compressor

Jeng Min Huang*, Chung Ping Chiang, Jiing Fu Chen, Yung Lo Chow, Chi-Chuan Wang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


This study performs a numerical study to examine the flow mixing characteristics subject to slot-injection and hole-injection of an intercooler applicable to a two-stage refrigerant compressor. The effect of injected angle and velocity is also investigated. The result indicates that the temperature distribution of a hole-injection is more uniform while the velocity distribution less uniform at a vertically injected arrangement. Larger injection angles generate bigger flow separation zones which results in velocity non-uniformity, whereas smaller injection angles give rise to a less velocity non-uniformity. As the injection velocity rises, both the temperature and velocity non-uniformity of the slot-injection type increase significantly whereas the injection velocity has negligible influence on the relevant uniformity for a hole-injection type. It is also found that the existence of the secondary vortices allows the hole-injection type to have a more uniform temperature and velocity distribution than that of the slot-injection type.

Original languageEnglish
Pages (from-to)2536-2548
Number of pages13
JournalApplied Thermal Engineering
Issue number14-15
StatePublished - 1 Oct 2007


  • CFD
  • Intercooler of a two-stage compressor
  • Mixing characteristic

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