{"id":4618,"date":"2026-09-11T11:50:00","date_gmt":"2026-09-11T02:00:00","guid":{"rendered":"https:\/\/www.26yc.com\/?p=4618"},"modified":"2026-10-08T23:36:09","modified_gmt":"2026-10-09T06:36:09","slug":"laboratory-heat-recovery","status":"publish","type":"post","link":"https:\/\/www.26yc.com\/fr\/laboratory-heat-recovery\/","title":{"rendered":"R\u00e9cup\u00e9ration en laboratoire : capturer l'\u00e9nergie d'\u00e9chappement des hottes \u00e0 gaz"},"content":{"rendered":"<h2>The separation rule<\/h2>\n<p>Laboratories are energy hogs &#8211; fume hoods run at high face velocities and dump conditioned air outdoors continuously. A lab can use 5-10x the energy per square meter of a typical office. Recovering that exhaust energy is one of the fastest paybacks available.<\/p>\n<p>l'\u00e9chappement de hotte \u00e0 fum\u00e9e peut transporter des vapeurs chimiques, donc l'alimentation et l'\u00e9chappement ne doivent jamais se m\u00e9langer. Cela rend <a href=\"https:\/\/www.26yc.com\/fr\/plate-heat-exchanger\/\">les \u00e9changeurs air-air \u00e0 plaques fixes<\/a> the safe default &#8211; streams are physically isolated.<\/p>\n<h2>What you recover<\/h2>\n<p>La plupart de l'\u00e9chappement de laboratoire est chaud et sec (domin\u00e9 par le sensible), donc la r\u00e9cup\u00e9ration par plaque sensible capture d\u00e9j\u00e0 la majeure partie de l'\u00e9nergie disponible. Dans les climats humides, un c\u0153ur enthalpique aide, mais seulement avec une membrane chimiquement compatible.<\/p>\n<h2>Placement<\/h2>\n<p>installez l'\u00e9changeur dans la colonne d'\u00e9chappement centrale ou \u00e0 l'AHU. Pour les hottes dispers\u00e9es sur les \u00e9tages, un <a href=\"https:\/\/www.26yc.com\/fr\/run-around-coil-heat-recovery\/\">run-around coil<\/a> boucle peut rassembler l'\u00e9nergie de plusieurs risers en un seul flux d'alimentation.<\/p>\n<h2>Design cautions<\/h2>\n<ul>\n<li>Keep pressure drop low &#8211; hood face velocity is safety-critical, not a comfort setting.<\/li>\n<li>Dimensionnez au design hivernal ; la r\u00e9cup\u00e9ration de refroidissement estivale est un bonus.<\/li>\n<li>Coordonnez avec <a href=\"https:\/\/www.26yc.com\/fr\/cleanroom-hvac-heat-recovery\/\">r\u00e8gles de s\u00e9paration de type salle blanche<\/a> l\u00e0 o\u00f9 les laboratoires partagent des besoins stricts en qualit\u00e9 de l'air.<\/li>\n<\/ul>\n<h2>Result<\/h2>\n<p>Une r\u00e9cup\u00e9ration de laboratoire bien con\u00e7ue r\u00e9duit g\u00e9n\u00e9ralement l'\u00e9nergie HVAC de 30 \u00e0 50 %, r\u00e9duisant directement \u00e0 la fois le co\u00fbt d'exploitation et l'empreinte carbone.<\/p>\n<h2>Variable exhaust and turndown<\/h2>\n<p>Fume hood usage fluctuates through the day, so the exhaust volume is rarely constant. A recovery system sized only to peak flow wastes effectiveness at part load. Where hoods are variable-volume, the exchanger and any run-around coil loop should be evaluated across the expected duty range, and bypass control added so the device does not become a throttle at low flow.<\/p>\n<h2>Safety interlocks and airflow verification<\/h2>\n<p>Recovery hardware must never interfere with the hood primary safety function. Maintain the designed face velocity and verified exhaust rate first; the heat exchanger is secondary. Any control that modulates exhaust for energy savings must be interlocked with the laboratory airflow monitoring system so safety setpoints always win.<\/p>\n<h2>Commissioning and verification<\/h2>\n<p>After installation, confirm exhaust and supply are balanced, that no cross-contamination is possible, and that pressure drop has not eroded hood face velocity. Trend the recovered energy against the commissioned baseline so fouling or bypass leakage is caught early. Coordinate the specification with the same separation principles used in cleanroom recovery.<\/p>\n<h2>Questions fr\u00e9quemment pos\u00e9es<\/h2>\n<p><strong>Is it safe to add heat recovery to fume hood exhaust?<\/strong><br \/>Yes, if you use fixed-plate exchangers with absolute stream separation. Never let recovery compromise hood face velocity or the verified exhaust rate.<\/p>\n<p><strong>What recovery type suits labs with hoods on several floors?<\/strong><br \/>A run-around coil loop can gather energy from multiple exhaust risers into one supply stream, which suits scattered hoods better than a single core.<\/p>\n<p><strong>Does recovery affect hood safety?<\/strong><br \/>Only if it raises pressure drop. Keep the drop low and interlock any modulation with the laboratory airflow monitoring system so safety setpoints always win.<\/p>\n<p><strong>How much energy can lab recovery save?<\/strong><br \/>Well-designed systems typically cut HVAC energy by 30 to 50 percent. Size the recovery to the winter design condition for the best result.<\/p>\n<div class=\"yc-related\">\n<h3>Articles connexes<\/h3>\n<ul>\n<li><a href=\"https:\/\/www.26yc.com\/fr\/sensible-heat-vs-latent-heat\/\" title=\"Sensible Heat vs Latent Heat: What Air-to-Air Recovery Systems Actually Move\">Sensible Heat vs Latent Heat: What Air-to-Air Recovery Systems Actually Move<\/a><\/li>\n<li><a href=\"https:\/\/www.26yc.com\/fr\/ahu-components\/\" title=\"AHU Components: Fans, Filters, and the Recovery Core\">AHU Components: Fans, Filters, and the Recovery Core<\/a><\/li>\n<\/ul>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>The separation rule Laboratories are energy hogs &#8211; fume hoods run at high face velocities and dump conditioned air outdoors continuously. A lab can use 5-10x the energy per square meter of a typical office. Recovering that exhaust energy is one of the fastest paybacks available. Fume hood exhaust may carry chemical vapors, so supply [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[244,197],"tags":[162],"class_list":["post-4618","post","type-post","status-publish","format-standard","hentry","category-applications","category-encyclopedia","tag-heat-recovery"],"_links":{"self":[{"href":"https:\/\/www.26yc.com\/fr\/wp-json\/wp\/v2\/posts\/4618","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.26yc.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.26yc.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.26yc.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.26yc.com\/fr\/wp-json\/wp\/v2\/comments?post=4618"}],"version-history":[{"count":2,"href":"https:\/\/www.26yc.com\/fr\/wp-json\/wp\/v2\/posts\/4618\/revisions"}],"predecessor-version":[{"id":5132,"href":"https:\/\/www.26yc.com\/fr\/wp-json\/wp\/v2\/posts\/4618\/revisions\/5132"}],"wp:attachment":[{"href":"https:\/\/www.26yc.com\/fr\/wp-json\/wp\/v2\/media?parent=4618"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.26yc.com\/fr\/wp-json\/wp\/v2\/categories?post=4618"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.26yc.com\/fr\/wp-json\/wp\/v2\/tags?post=4618"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}