Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Chute Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Granted Application number US14/643,216 Other versions US9544681B2 Google Patents US20160227315A1 - Acoustic deflector for omni-directional speaker system An important design consideration is that no recirculation zones or dead spots form – both of which are counterproductive to effective heat transfer.US20160227315A1 - Acoustic deflector for omni-directional speaker system There are also segments with a 'no tubes in window' design that affects the acceptable spacing within the design.

The Tubular Exchanger Manufacturers Association sets out guidelines.

The maximum baffle spacing is dependent on material and size of tubes. The minimum baffle spacing is the greater of 50.8 mm or one fifth of the inner shell diameter. In this way it is vital that they are spaced correctly at installation. Deresonating (detuning) baffles used to reduce tube vibrationĪs mentioned, baffles deal with the concern of support and fluid direction in heat exchangers.Impingement Baffles (used for protecting bundle when entrance velocity is high).Longitudinal Flow Baffles (used in a two-pass shell).Implementation of baffles is decided on the basis of size, cost and their ability to lend support to the tube bundles and direct flow: Except in very large tanks, four(4) baffles are placed. The tank is provided with baffles which prevent swirling and vortex formation. The baffles prevent the rotational flow without affecting radial or longitudinal flow.In this case the baffle helps increase the efficiency of the stove as more heat leaves the gas before it exits. In a household stoves like Handölkassetten and similar stoves a baffle is used to prevent the gas from going directly up in the chimney and possibly causing a chimney fire and direct the gas towards the front of the oven before it continues upwards into the chimney. In a chemical reactor, baffles are often attached to the interior walls to promote mixing and thus increase heat transfer and possibly chemical reaction rates. In a static mixer, baffles are used to minimize the tangential component of velocity which causes vortex formation, and thus promotes mixing. This increases fluid velocity and the effective heat transfer co-efficient of the exchanger Direct shell-side fluid flow along the tube field.Prevent the effects of steam starvation, which is increased with both fluid velocity and the length of the exchanger.Hold tubes in position (preventing sagging), both in production and operation.The main roles of a baffle in a shell and tube heat exchanger are to: Baffle design and tolerances for heat exchangers are discussed in the standards of the Tubular Exchanger Manufacturers Association (TEMA). A baffle is designed to support tube bundles and direct the flow of fluids for maximum efficiency. It is used in some household stoves and in some industrial process vessels (tanks), such as shell and tube heat exchangers, chemical reactors, and static mixers.īaffles are an integral part of the shell and tube heat exchanger design. Cross-sectional diagram of stirred tank reactorīaffles are flow-directing or obstructing vanes or panels used to direct a flow of liquid or gas.

Deflector meaning