{"id":495,"date":"2020-09-08T14:43:13","date_gmt":"2020-09-08T09:13:13","guid":{"rendered":"https:\/\/www.kewaunee.in\/blog\/?p=495"},"modified":"2025-04-15T12:01:05","modified_gmt":"2025-04-15T06:31:05","slug":"infographic-types-of-fume-hoods-based-on-air-volume","status":"publish","type":"post","link":"https:\/\/www.kewaunee.in\/blog\/infographic-types-of-fume-hoods-based-on-air-volume\/","title":{"rendered":"Infographic: Types of Fume Hoods Based on Air Volume"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row full_width=&#8221;stretch_row&#8221; equal_height=&#8221;yes&#8221; content_placement=&#8221;middle&#8221; css=&#8221;.vc_custom_1594037823219{margin-top: 0px !important;margin-bottom: 0px !important;padding-top: 40px !important;padding-bottom: 40px !important;}&#8221;][vc_column]<h1 class=\"boc_heading  al_left  \"  style=\"margin-bottom: 20px;margin-top: 0px;color: #333;\"><span>Types of Fume Hoods Based on Air Volume<\/span><\/h1>[vc_row_inner][vc_column_inner]<div class=\"boc_list_item  \" >\r\n\t\t\t\t\t<span class=\"li_icon normal \" style=\"\"><i class=\"icon icon-mail-forward\" style=\"color: #224a98;\"><\/i><\/span>\r\n\t\t\t\t\t<div class=\"boc_list_item_text normal\"><\/p>\n<h3><b>Open by-pass fume hood<\/b><\/h3>\n<ul>\n<li>Designed for operation on constant air volume exhaust systems<\/li>\n<li>The air by-pass provides for an alternate route for air to enter the hood as the sash is closed<\/li>\n<li>The size of the by-pass is set so that, as the sash is closed, the velocity of the air increases to no more than 3.5 times the velocity with the sash fully open.<\/li>\n<\/ul>\n<p><\/div>\r\n\t\t\t\t   <\/div><div class=\"boc_list_item  \" >\r\n\t\t\t\t\t<span class=\"li_icon normal \" style=\"\"><i class=\"icon icon-mail-forward\" style=\"color: #224a98;\"><\/i><\/span>\r\n\t\t\t\t\t<div class=\"boc_list_item_text normal\"><\/p>\n<h3><b>Low constant volume fume hood<\/b><\/h3>\n<ul>\n<li>These <a href=\"https:\/\/www.kewaunee.in\/laboratory-fume-hood.php\">fume hoods<\/a> use a restricted sash opening or a lower face velocity, or both to reduce the exhaust quantity of air<\/li>\n<li>Traditionally, such fume hoods can reduce the exhaust CFM from 40% to 60% from Open By-pass levels.<\/li>\n<\/ul>\n<p><\/div>\r\n\t\t\t\t   <\/div><div class=\"boc_list_item  \" >\r\n\t\t\t\t\t<span class=\"li_icon normal \" style=\"\"><i class=\"icon icon-mail-forward\" style=\"color: #224a98;\"><\/i><\/span>\r\n\t\t\t\t\t<div class=\"boc_list_item_text normal\"><b>Restricted by-pass fume hood<\/b><\/p>\n<ul>\n<li>Designed for operation on variable air volume (VAV) exhaust systems when used with a fume hood face velocity controller<\/li>\n<li>By reducing the amount of air exhausted, as the sash is lowered, a constant face velocity is maintained, exhausting less air than a Constant Volume hood.<\/li>\n<\/ul>\n<p><\/div>\r\n\t\t\t\t   <\/div><div class=\"boc_list_item  \" >\r\n\t\t\t\t\t<span class=\"li_icon normal \" style=\"\"><i class=\"icon icon-mail-forward\" style=\"color: #224a98;\"><\/i><\/span>\r\n\t\t\t\t\t<div class=\"boc_list_item_text normal\"><\/p>\n<h3><b>Auxiliary air fume hood<\/b><\/h3>\n<ul>\n<li><a href=\"https:\/\/www.kewaunee.in\/auxiliary-air-chamber.php\">Auxiliary Air fume hoods<\/a> are Constant volume hoods designed for use when it is not feasible to introduce the required makeup air through the room ventilation system.<\/li>\n<li>Up to 70% of the exhaust volume can be supplied through an auxiliary air chamber mounted above the hood.<\/li>\n<li>These hoods require a separate ducted fan system for the supply of the auxiliary air.<\/li>\n<\/ul>\n<p><a href=\"https:\/\/www.kewaunee.in\/laboratory-fume-hood.php\">https:\/\/www.kewaunee.in\/laboratory-fume-hood.php<\/a><\/p>\n<p><a href=\"https:\/\/www.kewaunee.in\/auxiliary-air-chamber.php\">https:\/\/www.kewaunee.in\/auxiliary-air-chamber.php<\/a><\/div>\r\n\t\t\t\t   <\/div>[\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_row full_width=&#8221;stretch_row&#8221; equal_height=&#8221;yes&#8221; content_placement=&#8221;middle&#8221; css=&#8221;.vc_custom_1594037823219{margin-top: 0px !important;margin-bottom: 0px !important;padding-top: 40px !important;padding-bottom: 40px !important;}&#8221;][vc_column][vc_row_inner][vc_column_inner][\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row]<\/p>\n","protected":false},"author":2,"featured_media":382,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[24],"tags":[4],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.8 - 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