Title :
Research on heat transfer of spraying evaporative cooling technique for large electrical machine
Author :
Li ZhenGuo ; Guo Jianhong ; Fu DePing ; Gu GuoBiao ; Xiong Bin
Author_Institution :
Inst. of Electr. & Eng., Chinese Acad. of Sci., Beijing, China
Abstract :
A heat transfer calculation approach of spraying evaporative cooling is presented according to its characters using in large electrical machine. Based on the parameters of coolant, fluid and surface structure the calculation approach is confirmed, and gain the relationship between convective heat transfer coefficient and heat flux. Experiment model of spraying evaporative cooling electrical machine is built, and perform the heating and cooling experiment. The temperature distribution of experiment model is calculated by FEM taking the theoretical result of convective heat transfer coefficient as the boundary. The results of calculation and experiment are consistent, which shows that the boundary of calculation is suitable, and this method can be used in the calculation and design of spraying evaporative cooling electrical machine.
Keywords :
electric machines; finite element analysis; heat transfer; FEM; electrical machine; heat flux; heat transfer calculation approach; heat transfer coefficient; spraying evaporative cooling technique; surface structure; Coolants; Cooling; Heat engines; Heat transfer; Machine windings; Pumps; Resistance heating; Spraying; Surface structures; Water heating; evaporative cooling technique; heat transfer calculation; large electrical machine; spraying;
Conference_Titel :
Electrical Machines and Systems, 2009. ICEMS 2009. International Conference on
Conference_Location :
Tokyo
Print_ISBN :
978-1-4244-5177-7
Electronic_ISBN :
978-4-88686-067-5
DOI :
10.1109/ICEMS.2009.5382944
