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http://dx.doi.org/10.5293/KFMA.2005.8.1.007

Performance Test of Centrifugal Compressor for Microturbine with Running Tip Clearance  

Kang, Jeong-Seek (한국항공우주연구원 항공추진그룹)
Lim, Byeung-Jun (한국항공우주연구원 항공추진그룹)
Cha, Bong-Jun (한국항공우주연구원 항공추진그룹)
Yang, Soo-Seok (한국항공우주연구원 항공추진그룹)
Publication Information
The KSFM Journal of Fluid Machinery / v.8, no.1, 2005 , pp. 7-15 More about this Journal
Abstract
Tip clearance of centrifugal compressor affects the performance. Larger tip clearance results in lower efficiency. What really affects the performance is the running tip clearance, not the cold tip clearance. When the compressor is operating, blade strain and the pressure difference between impeller backplate and hub affects the running tip clearance. This paper describes measured running tip clearance and its effects on the performance of centrifugal compressor. Cold tip clearance before operation was 0.4 mm and running tip clearance varied from 0.86 mm to 0.25 mm with impeller exit pressure. As the pressure at impeller exit increases, the running tip clearance tends to decreases. The target running tip clearance for Compressor at $100\%$ speed was 0.3 mm, and it turned out to be exactly 0.30 mm from experiment.
Keywords
Microturbine; Core compressor; Performance test; Running tip clearance;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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