National Changhua University of Education Institutional Repository : Item 987654321/12261

English | 正體中文 | 简体中文 | Items with full text/Total items : 6507/11669
Visitors : 30057688 Online Users : 652

RC Version 3.2 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.

Scope Adv. Search

Login ‧ Upload ‧ Help ‧ About ‧ Administer

NCUEIR > College of Engineering > Department of Mechatronics Engineering > Periodical Articles > Item 987654321/12261

Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/12261

Title:	A Novel Method of Cooling a Plasma Welding Torch Head
Authors:	Wu, P. S.;Chao, Y. Y.;Chiou, Y. J.;Lin, Yi- Cheng
Contributors:	機電工程系
Date:	2002-08
Issue Date:	2012-07-05T07:09:59Z
Publisher:	Maney Publishing
Abstract:	The performance of a design using swirling flow with a U shaped return passage to cool the tip of a plasma arc torch is numerically investigated. The new cooling scheme is first compared with the cooling design of a Nippon Steel plasma torch. Using a hypothetical swirling flow of different vortex angles but the same coolant flowrate and external heating boundary conditions as for the Nippon Steel torch, the flow and temperature fields for both torches were analysed using a computational fluid dynamics package and the results were compared. The results show that the present cooling scheme not only provides a more axisymmetric temperature field, but also results in lower averaged surface temperatures. Using a swirling flow generator implemented upstream of the tip of the U shaped region, numerical results indicate that improved cooling performance can be achieved with only a slight increase in coolant pumping head when compared with the cooling design for the Nippon Steel torch.
Relation:	Science and Technology of Welding and Joining, 7(4): 247-252
Appears in Collections:	[Department of Mechatronics Engineering] Periodical Articles

Files in This Item:

File	Size	Format
2050100210004.pdf	7Kb	Adobe PDF	524	View/Open