Title :
Research of guide vane proposals for the single-stage axial-flow fans used in the large generator
Author :
Ye Zeng-Ming ; Zhu Ting-Ting
Author_Institution :
Dept. of Power Eng., Univ. of Shanghai for Sci. & Technol., Shanghai, China
Abstract :
Based on the one-dimensional design method and under the condition of ideal gas, this paper analyses the proportion of swirl energy losses to the theoretical pressure rise of the axial-flow fans used in the China-made 300 MW Generator and WESTHOUSE 135 MW Generator, the former is 13.79% and the latter is 11.4%. The results both of the CFD numerical simulation and model-testing prove that the straightener vanes can change 90% of the swirl energy losses into the useful energy, they can improve the efficiency of the fan about 12.33% compared with the same fan without guide vanes.
Keywords :
computational fluid dynamics; electric generators; numerical analysis; 1D design method; China-made generator; WESTHOUSE Generator; computational fluid dynamics; numerical simulation; power 135 MW; power 300 MW; single-stage axial-flow fans; swirl energy losses; Blades; Computational fluid dynamics; Design engineering; Design methodology; Energy loss; Fans; Numerical models; Numerical simulation; Power engineering; Proposals; axial-flow fans; large generator; straightener vanes; swirl energy losses;
Conference_Titel :
Sustainable Power Generation and Supply, 2009. SUPERGEN '09. International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-4934-7
DOI :
10.1109/SUPERGEN.2009.5348150
