{"id":48,"date":"2021-01-27T14:26:25","date_gmt":"2021-01-27T19:26:25","guid":{"rendered":"https:\/\/pressbooks.bccampus.ca\/basichvac\/?post_type=chapter&#038;p=48"},"modified":"2021-03-24T11:32:22","modified_gmt":"2021-03-24T15:32:22","slug":"fans-and-blowers","status":"publish","type":"chapter","link":"https:\/\/pressbooks.bccampus.ca\/basichvac\/chapter\/fans-and-blowers\/","title":{"raw":"Fans and Blowers","rendered":"Fans and Blowers"},"content":{"raw":"Click play on the following audio player to listen along as you read this section.\r\n\r\nhttps:\/\/video.bccampus.ca\/id\/0_en3enan7?width=608&amp;height=70&amp;playerId=23448552\r\n\r\nSometimes called the <strong>[pb_glossary id=\"602\"]air-handler unit[\/pb_glossary]<\/strong> or the <strong>[pb_glossary id=\"706\"]blower[\/pb_glossary]<\/strong>, the fan is the device which drives the treated air throughout the building. Usually driven by a single-phase AC motor in smaller applications, and a three-phase motor in larger commercial or industrial applications.\r\n\r\nThere are two main categories of fans, each with their own advantages and applications: the <strong>[pb_glossary id=\"724\"]axial fan[\/pb_glossary]<\/strong>, which draws air parallel to the rotating axis and the <strong>[pb_glossary id=\"725\"]centrifugal fan[\/pb_glossary]<\/strong>, which draws air at a right angle to its rotating axis.","rendered":"<p>Click play on the following audio player to listen along as you read this section.<\/p>\n<p>https:\/\/video.bccampus.ca\/id\/0_en3enan7?width=608&#38;height=70&#38;playerId=23448552<\/p>\n<p>Sometimes called the <strong>air-handler unit<\/strong> or the <strong><a class=\"glossary-term\" aria-haspopup=\"dialog\" aria-describedby=\"definition\" href=\"#term_48_706\">blower<\/a><\/strong>, the fan is the device which drives the treated air throughout the building. Usually driven by a single-phase AC motor in smaller applications, and a three-phase motor in larger commercial or industrial applications.<\/p>\n<p>There are two main categories of fans, each with their own advantages and applications: the <strong><a class=\"glossary-term\" aria-haspopup=\"dialog\" aria-describedby=\"definition\" href=\"#term_48_724\">axial fan<\/a><\/strong>, which draws air parallel to the rotating axis and the <strong><a class=\"glossary-term\" aria-haspopup=\"dialog\" aria-describedby=\"definition\" href=\"#term_48_725\">centrifugal fan<\/a><\/strong>, which draws air at a right angle to its rotating axis.<\/p>\n<div class=\"glossary\"><span class=\"screen-reader-text\" id=\"definition\">definition<\/span><template id=\"term_48_602\"><div class=\"glossary__definition\" role=\"dialog\" data-id=\"term_48_602\"><div tabindex=\"-1\"><\/div><button><span aria-hidden=\"true\">&times;<\/span><span class=\"screen-reader-text\">Close definition<\/span><\/button><\/div><\/template><template id=\"term_48_706\"><div class=\"glossary__definition\" role=\"dialog\" data-id=\"term_48_706\"><div tabindex=\"-1\"><p>A motor that drives air in force-air systems.<\/p>\n<\/div><button><span aria-hidden=\"true\">&times;<\/span><span class=\"screen-reader-text\">Close definition<\/span><\/button><\/div><\/template><template id=\"term_48_724\"><div class=\"glossary__definition\" role=\"dialog\" data-id=\"term_48_724\"><div tabindex=\"-1\"><p>Axial fans drive low volumes of air under low static pressure conditions in parallel with their axis of rotation. Mainly used for cooling of coils.<\/p>\n<\/div><button><span aria-hidden=\"true\">&times;<\/span><span class=\"screen-reader-text\">Close definition<\/span><\/button><\/div><\/template><template id=\"term_48_725\"><div class=\"glossary__definition\" role=\"dialog\" data-id=\"term_48_725\"><div tabindex=\"-1\"><p>A centrifugal fan drives lager volumes of air under high static pressure conditions at a right angle to its axis of rotation. Mainly used for the moving air through ductwork.<\/p>\n<\/div><button><span aria-hidden=\"true\">&times;<\/span><span class=\"screen-reader-text\">Close definition<\/span><\/button><\/div><\/template><\/div>","protected":false},"author":848,"menu_order":2,"template":"","meta":{"pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"class_list":["post-48","chapter","type-chapter","status-publish","hentry"],"part":25,"_links":{"self":[{"href":"https:\/\/pressbooks.bccampus.ca\/basichvac\/wp-json\/pressbooks\/v2\/chapters\/48","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pressbooks.bccampus.ca\/basichvac\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/pressbooks.bccampus.ca\/basichvac\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/basichvac\/wp-json\/wp\/v2\/users\/848"}],"version-history":[{"count":15,"href":"https:\/\/pressbooks.bccampus.ca\/basichvac\/wp-json\/pressbooks\/v2\/chapters\/48\/revisions"}],"predecessor-version":[{"id":726,"href":"https:\/\/pressbooks.bccampus.ca\/basichvac\/wp-json\/pressbooks\/v2\/chapters\/48\/revisions\/726"}],"part":[{"href":"https:\/\/pressbooks.bccampus.ca\/basichvac\/wp-json\/pressbooks\/v2\/parts\/25"}],"metadata":[{"href":"https:\/\/pressbooks.bccampus.ca\/basichvac\/wp-json\/pressbooks\/v2\/chapters\/48\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/pressbooks.bccampus.ca\/basichvac\/wp-json\/wp\/v2\/media?parent=48"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/basichvac\/wp-json\/pressbooks\/v2\/chapter-type?post=48"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/basichvac\/wp-json\/wp\/v2\/contributor?post=48"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/basichvac\/wp-json\/wp\/v2\/license?post=48"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}