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Baffles are flow-directing or obstructing vanes or panels used in some industrial process vessels (tanks), such as shell and tube heat exchangers, chemical reactors, and static mixers. Baffles are an integral part of the shell and tube heat exchanger design. A baffle is designed to support tube bundles and direct the flow of fluids for maximum efficiency. ==Use of baffles== The main roles of a baffle in a shell and tube heat exchanger are to: * Hold tubes in position (preventing sagging), both in production and operation * Prevent the effects of vibration, which is increased with both fluid velocity and the length of the exchanger * Direct shell-side fluid flow along tube field. This increases fluid velocity and the effective heat transfer co-efficient of the exchanger In a static mixer, baffles are used to promote mixing.〔''SPE/ANTEC 1999 Proceedings'' edited by SPE Staff pp. 163–164〕 In a chemical reactor, baffles are often attached to the interior walls to promote mixing〔''Chemical reactor modeling: multiphase reactive flows'' by Hugo A. Jakobsen, published in 2008 by Springer-Verlag in Berlin Heidelberg, pp. 681–683 〕 and thus increase heat transfer and possibly chemical reaction rates. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Baffle (heat transfer)」の詳細全文を読む スポンサード リンク
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