This paper was studied to improve the efficiency of big fans through the modification of the impeller shape while maintaining other parameters such as casing geometry(shape), entry and exit diameter, rotation speed, number of blades, flow rate, and static pressure in accordance with the field requirements including the existing installation. Numerical calculation based on semi-empirical formula(SEF) and the methodology of computational fluid mechanics(CFD) were used. It is widely used in the chemical industry, and a large fan with a nominal flow capacity of 510,000 m/h and a static pressure of 11,000 Pa was used as a case study. In this study, the theoretical performance comparison and field measurements of the existing fan and crystal fan geometry designs were conducted. The results of the study showed that the modified geometric design can contribute to reducing the absorption power by up to 135 kW, thereby increasing the fan efficiency by up to 5.87%.
목차
Abstract 1. 서론 2. 수치해석 방법 2.1 임펠러 개선 모델 수치분석 2.2 기존 모델 및 제원 2.3 수정 매개변수 및 해석 2.4 해석결과 및 고찰 3. 결론 후기 References
키워드
대형 팬전산유체역학반경험적 공식임펠러 수정블레이드 각도Big fanCFDSEFImpeller modificationBlade angle
저자
정연준 [ Yeon-Jun Jung | Member, Senior Researcher at Argentervo Corporation ]
First Author
정덕화 [ Duk-Hwa Jung | Author; Member, Professor, Dept. of Liberal Education Paichai University ]
Corresponding Author