热科学学报：英文版2008，Vol.17Issue(1)：35-41,7.
Performance and Internal Flow of Sirocco Fan Using Contra-Rotating Rotors
Performance and Internal Flow of Sirocco Fan Using Contra-Rotating Rotors
J. Fukutomi 1T.Shigemitsu 1T. Yasunobu2
作者信息
- 1. Institute of Science and Technology, The University of Tokushima, 2-1 Minamijyosanjima-cho, Tokushima 770-8506,JAPAN
- 2. Graduate School of Advanced Technology and Science, The University of Tokushima, 2-1 Minamijyosanjima-cho,Tokushima 770-8506, JAPAN
- 折叠
摘要
Abstract
A sirocco fan using contra-rotating rotors in which an inner rotor is settled inside the sirocco fan rotor end each rotor rotates in an opposite direction was proposed for the purpose of getting the higher pressure and making the structure of a sirocco fan more compact. If the high discharge pressure is obtained with the adoption of the contra-rotating rotors, it could be used for various purposes. Pressure coefficient of a sirocco fan with contra-rotating rotors is 2.5 times as high as the conventional sirocco fan and the maximum efficiency point of contra-rotating rotors shifts to larger flow rate than a conventional sirocco fan. On the other hand, it was clarified from the flow measurement results that circumferential velocity component at the outlet of the outer rotor of contra-rotating rotors becomes larger than a conventional one. In the present paper, the performance of a conventional sirocco fan and a sirocco fan with contra-rotating rotors are shown and the internal flow field at the outlet of outer rotor of both cases is clarified. Then, the effect of different kind of contra-rotating rotors on the performance and internal flow field is investigated and the rotor design with higher performanco would be discussed.关键词
Sirocco fan, High pressure, Contra-rotating rotors, Flow angle, Circular arc blade, Aerofoil bladeKey words
Sirocco fan, High pressure, Contra-rotating rotors, Flow angle, Circular arc blade, Aerofoil blade分类
数理科学引用本文复制引用
J. Fukutomi,T.Shigemitsu,T. Yasunobu..Performance and Internal Flow of Sirocco Fan Using Contra-Rotating Rotors[J].热科学学报：英文版,2008,17(1):35-41,7.
