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http://dx.doi.org/10.5139/JKSAS.2005.33.12.076

An Experimental Study of the Performance Characteristics on a Multi-Stage Micro Turbine with Various Stages  

Cho, Chong-Hyun (경상대학교 항공공학과 대학원)
Cho, Soo-Yong (경상대 항공기부품기술연구센터)
Choi, Sang-Kyu (한국기계연구원 기전응용그룹)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.33, no.12, 2005 , pp. 76-82 More about this Journal
Abstract
An experimental study on an axial-type micro turbine which consists of maximum 6 stages is conducted to measure aerodynamic characteristics on each stage. This turbine has a 2.0 flow coefficient, 3.25 loading coefficient and 25.8mm mean diameter. The solidity of stators and rotors is within a 0.67~0.75, and the off-design performance is measured by changing the load after adjusting the mass flowrate and the total pressure to constant at inlet. A maximum specific output power of 2kW/kg/sec is obtained in one stage, but the increment of the specific output power with increasing stages is alleviated. In case of torque, the increment of the torque maintains to constant at low RPM region, but its increment become dull at high RPM region. The efficiency of the micro turbine becomes low because the tip gap effect is great due to the small blade, but it could be improved by increasing the stages.
Keywords
Micro Turbine; Multi-Stage Axial-Type Turbine; Turbine Performance Test;
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