Indian Journal of Science and Technology

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The objective of the present investigation is to explore the possibility of using different types of squealers to improve the performance of centrifugal compressor. The following experiments are carried out to achieve the objectives: measurement of performance of the compressor with rectangular squealers, elliptical squealers and sloping squealers, impeller exit traverse with a pre-calibrated five hole probe for all configuration at three coefficients, viz ∅ = 0.28 (near design), ∅= 0.34 (above design) and ∅ = 0.18 (below design) and static pressure distribution on the shroud over the impeller at the above three flow coefficient. From the present investigation, it is concluded that sloping type squealer tip has beneficial effects in increasing energy co-efficient and efficiency of the compressor.

Keywords

Centrifugal Compressor, Spacers, Squealers, Tip Clearance, Performance Characteristics
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