Performance Characteristics of a Small-Size Turbo-Compressor with Different Vaned Diffuser Throat Area Ratios

베인 디퓨져 목 형상비 변화에 따른 소형 터보압축기 성능특성 고찰

The effects of various vaned diffuser configurations, such as throat area ratios and rectangular and conical cross-section shapes. to the performance of a small-size turbo-compressor are studied. Numerical analyses were carried out for the region of diffuser and casing only. The pressure recovery coefficient was calculated to estimate the performance of the diffuser, and then compared with the measured data. Results show that the shapes and the throat area ratios of the diffuser strongly influence on the performance of a turbo-compressor.