Effect of flanges on the velocity in front of exhaust ventilation hoods

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<title>Effect of flanges on the velocity in front of exhaust ventilation hoods</title>
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<title>The Annals of occupational hygiene</title>
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<name type="personal" usage="primary" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="MAPA20080043179">
<namePart>Fletcher, B.</namePart>
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<dateIssued encoding="marc">1978</dateIssued>
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<abstract displayLabel="Summary">The adittion of a flange to a local exhaust ventilation hood can produce a large increase in velocity in front of the hood. It is shown that an optimum flange width exists beyond which there is little further increase in velocity. As hood aspect ratio increases, the effect of flanges increases and the addition of even small flanges to slots can have an appreciables effect. Velocity increases of over 55% have been measured in front of hoods of aspect ratio 16:1</abstract>
<note type="statement of responsibility">B. Fletcher</note>
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<topic>Higiene industrial</topic>
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<topic>Contaminantes químicos</topic>
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<topic>Contaminación atmosférica</topic>
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<topic>Polvo</topic>
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<topic>Velocidad</topic>
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<topic>Aire</topic>
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<subject authority="lcshac" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="MAPA20080560997">
<topic>Ventilación</topic>
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<topic>Sistemas de ventilación</topic>
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<title>The Annals of occupational hygiene</title>
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<text>nº 3, December 1978 ; p. 265-269</text>
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