Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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On-Site Measurement of the Inlet Air Evaporative Cooling Performance for a Centrifugal Turbo Compressor

CDA 인입공기 증발냉각을 통한 압축기 성능 개선장치 개발 연구

  • Kim, Gyu Wan (Dept. of Mechanical Engineering, Andong Nat'l Univ.) ;
  • Park, Jin Ouk (Dept. of Mechanical Engineering, Andong Nat'l Univ.) ;
  • Kim, Heuy Dong (Dept. of Mechanical Engineering, Andong Nat'l Univ.)
  • Received : 2014.02.08
  • Accepted : 2014.08.21
  • Published : 2014.11.01
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Abstract

In the present study, water vapor is injected at various positions in a Clean Dry Air (CDA) system such as a system inlet duct, compressor inlet, and compressor outlet by humidified air turbines. The application of evaporative cooling reduces the compression work and enhances the Energy Consumption Index (ECI) per unit volume. The main purpose of this study is to investigate the compressor power performance with different inlet air temperatures and humidity conditions. It is found that the actual power consumption and discharge flow are significantly influenced by the inlet air temperature as well as relative humidity. The results obtained during this study are compared both numerically and experimentally and are found to be in very good agreement.

CDA(Clean Dry Air) System 에서 공기 압축기는 핵심 설비이자 소비되는 전력의 대부분을 차지한다. 그리하여 압축기 성능(ECI)을 개선함으로써 CDA System 전체성능을 크게 향상 시킬 수 있다. 종래의 많은 연구를 통해 인입공기의 온/습도 조건이 압축기에 미치는 영향에 대해 잘 알려져 있으나, 본 연구에서는 인입공기의 조건에 따라 소비되는 실제 전력 및 토출유량의 상관관계를 조사하였다. 또한 증발 냉각장치를 설치하여 인입공기 조건의 다양한 변화를 통하여 압축기성능에 미치는 영향을 연구하였다. 얻어진 결과로부터 인입공기의 온/습도가 낮을수록 압축기성능이 개선되었고, 증발냉각장치를 설치하였을 때 압축기성능이 개선됨을 알았다.

Keywords

References

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