{"id":4165,"date":"2025-12-11T14:25:36","date_gmt":"2025-12-11T14:25:36","guid":{"rendered":"https:\/\/bos-akademie.de\/?p=4165"},"modified":"2025-12-11T15:31:55","modified_gmt":"2025-12-11T15:31:55","slug":"haeufige-fehler-bei-der-druckbelueftung","status":"publish","type":"post","link":"https:\/\/bos-akademie.de\/en\/haeufige-fehler-bei-der-druckbelueftung\/","title":{"rendered":"Common mistakes in pressure ventilation"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Pressurized ventilation is one of the key tactical measures used by fire departments. It helps to remove smoke from buildings in a controlled manner, improve visibility, and significantly improve working conditions for the teams on the ground. At the same time, it is a technique that is often used incorrectly in practice\u2014often not due to a lack of knowledge, but because the scene is confusing, stress arises, or procedures are rarely practiced.<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-medium-font-size\"><strong>1. Missing or undersized exhaust vent<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">One of the most common mistakes is an inadequate exhaust vent. Without a suitable exhaust vent, a clear air flow cannot be established. The pressure then spreads uncontrollably throughout the building, and the smoke is not effectively vented to the outside.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Typical consequences<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Smoke accumulates inside.<\/li>\n\n\n\n<li>Heat and combustion gases are not discharged in a targeted manner.<\/li>\n\n\n\n<li>The fan has little effect.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>How can you avoid this mistake?<\/strong><br>The exhaust air opening should be at least as large as the supply air area at the entrance door\u2014but a little larger is better. During training, you can test different opening sizes and observe the effect\u2014this way, the team quickly understands how strong the dependency is here.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-medium-font-size\"><strong>2. Fan positioned too far or too close to the door<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The position of the <a href=\"https:\/\/bos-akademie.de\/en\/product\/hochdruckluefter\/\">High-pressure fan<\/a> is crucial. If it is too close, it blows the airflow into the building without completely \u201ccapturing\u201d the door frame. If the distance is too great, the pressure effect is significantly reduced.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Typical consequences:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The air does not \u201ccut\u201d cleanly.<\/li>\n\n\n\n<li>The pressure cone misses the opening.<\/li>\n\n\n\n<li>The smoke escapes sideways instead of being directed outwards.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Basic rule for training:<\/strong><br>The fan should be positioned so that the air cone it generates&nbsp;<strong>covers the entire door surface<\/strong>. This can be easily simulated in training\u2014especially with models or simulations, as the air flow becomes immediately visible.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" data-id=\"2204\" src=\"https:\/\/bos-akademie.de\/wp-content\/uploads\/2025\/01\/einfamilienhaus_detail_luefter-1024x683.png\" alt=\"Taktik-Trainer: Hochdruckl\u00fcfter\" class=\"wp-image-2204\" srcset=\"https:\/\/bos-akademie.de\/wp-content\/uploads\/2025\/01\/einfamilienhaus_detail_luefter-1024x683.png 1024w, https:\/\/bos-akademie.de\/wp-content\/uploads\/2025\/01\/einfamilienhaus_detail_luefter-300x200.png 300w, https:\/\/bos-akademie.de\/wp-content\/uploads\/2025\/01\/einfamilienhaus_detail_luefter-768x512.png 768w, https:\/\/bos-akademie.de\/wp-content\/uploads\/2025\/01\/einfamilienhaus_detail_luefter-1536x1024.png 1536w, https:\/\/bos-akademie.de\/wp-content\/uploads\/2025\/01\/einfamilienhaus_detail_luefter-2048x1365.png 2048w, https:\/\/bos-akademie.de\/wp-content\/uploads\/2025\/01\/einfamilienhaus_detail_luefter-360x240.png 360w, https:\/\/bos-akademie.de\/wp-content\/uploads\/2025\/01\/einfamilienhaus_detail_luefter-1320x880.png 1320w, https:\/\/bos-akademie.de\/wp-content\/uploads\/2025\/01\/einfamilienhaus_detail_luefter-600x400.png 600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" data-id=\"2193\" src=\"https:\/\/bos-akademie.de\/wp-content\/uploads\/2025\/01\/einfamilienhaus_luefter-1024x683.png\" alt=\"Taktik-Trainer: Hochdruckl\u00fcfter entraucht das Haus | Rauchhaus\" class=\"wp-image-2193\" srcset=\"https:\/\/bos-akademie.de\/wp-content\/uploads\/2025\/01\/einfamilienhaus_luefter-1024x683.png 1024w, https:\/\/bos-akademie.de\/wp-content\/uploads\/2025\/01\/einfamilienhaus_luefter-300x200.png 300w, https:\/\/bos-akademie.de\/wp-content\/uploads\/2025\/01\/einfamilienhaus_luefter-768x512.png 768w, https:\/\/bos-akademie.de\/wp-content\/uploads\/2025\/01\/einfamilienhaus_luefter-1536x1024.png 1536w, https:\/\/bos-akademie.de\/wp-content\/uploads\/2025\/01\/einfamilienhaus_luefter-2048x1366.png 2048w, https:\/\/bos-akademie.de\/wp-content\/uploads\/2025\/01\/einfamilienhaus_luefter-360x240.png 360w, https:\/\/bos-akademie.de\/wp-content\/uploads\/2025\/01\/einfamilienhaus_luefter-1320x880.png 1320w, https:\/\/bos-akademie.de\/wp-content\/uploads\/2025\/01\/einfamilienhaus_luefter-600x400.png 600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/figure>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-medium-font-size\"><strong>3. Unfavorable angle of the air cone<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The angle determines whether the pressure cone hits the opening optimally.<br>If the fan is positioned too high or too low, much of its effectiveness is lost.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>What is often observed:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Air hits the upper door frame \u2192 effect \u201cevaporates.\u201d<\/li>\n\n\n\n<li>Air hits the ground \u2192 pressure loss.<\/li>\n\n\n\n<li>Air hits at an angle \u2192 irregular air flows in the building.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Tip for training:<\/strong><br>Test how the angle affects the result in several positions. Small changes make a big difference\u2014experience shows that this sticks in the memory.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-medium-font-size\"><strong>4. Incorrect timing of ventilation<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A frequently underestimated mistake:<br>The fan is switched on before it is clear whether&nbsp;<strong>where<\/strong>&nbsp;exactly the fire is located and&nbsp;<strong>how<\/strong>&nbsp;the smoke layers behave.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In unfavorable cases, this can lead to an intensification of the fire or to smoke deterioration in other areas.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>The correct answer is:<\/strong><br>The fan should only be turned on once the situation has been assessed and it is clear which openings are available and how the air flow should be directed.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-medium-font-size\"><strong>5. Lack of control of the airways<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ventilation is not a one-time decision. Airways change during use\u2014doors, windows, and fire room openings can open, close, or jam.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Common mistakes:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Changes are not noticed.<\/li>\n\n\n\n<li>The air suddenly flows into other areas.<\/li>\n\n\n\n<li>Smoke migrates into rooms that should actually be protected.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Solution:<\/strong><br>During training, deliberately incorporate situations in which conditions change\u2014this teaches teams to constantly check their work.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-medium-font-size\"><strong>6. No consideration of wind and natural currents<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/bos-akademie.de\/en\/product\/windgenerator\/\">Wind<\/a> can have a massive impact on ventilation\u2014sometimes it supports the measure, sometimes it counteracts it.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Errors in practice:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Fan is used against strong wind \u2192 little effect.<\/li>\n\n\n\n<li>Side winds cause smoke to swirl \u2192 no clear direction of flow.<\/li>\n\n\n\n<li>Open sides of buildings change pressure conditions unnoticed.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Why is this important?<\/strong><br>Wind and natural currents are often not taken into account in training, even though they play a major role in real-life situations.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h1 class=\"wp-block-heading has-medium-font-size\"><strong>Conclusion: Pressure ventilation requires training<\/strong><\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Positive pressure ventilation is an effective tactical measure\u2014provided that it is practiced regularly and under realistic conditions. In practice, positive pressure ventilation often follows a trial-and-error principle: even small changes to openings, angles, or airways can significantly alter the effect. This is precisely why it makes sense to practice such procedures under controlled conditions.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A <a href=\"https:\/\/bos-akademie.de\/en\/warum-der-taktik-trainer-noch-mehr-kann-als-ein-klassisches-rauchhaus\/\">trainings model<\/a> like our&nbsp;<a href=\"https:\/\/bos-akademie.de\/en\/alle-produkte\/\">Taktik-Trainer<\/a> helps precisely with this, because it allows smoke layers, air currents, and different building structures to be visualized. This creates comprehensible connections, and the team gets a feel for how pressure ventilation really works.<\/p>\n\n\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>","protected":false},"excerpt":{"rendered":"<p>Die Druckbel\u00fcftung geh\u00f6rt zu den zentralen taktischen Ma\u00dfnahmen im Feuerwehreinsatz. Sie hilft dabei, Rauch kontrolliert aus Geb\u00e4uden zu f\u00fchren, die Sicht zu verbessern und die Arbeitsbedingungen f\u00fcr die vorgehenden Trupps deutlich zu erleichtern. Gleichzeitig ist sie eine Technik, die in der Praxis immer mal wieder falsch angewendet wird &#8211; oft [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2204,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[68],"tags":[],"class_list":["post-4165","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>H\u00e4ufige Fehler bei der Druckbel\u00fcftung - BOS-Akademie<\/title>\n<meta name=\"description\" content=\"H\u00e4ufige Fehler bei der Druckbel\u00fcftung erkennen &amp; vermeiden: Wie Feuerwehren L\u00fcfterposition, \u00d6ffnungen und Luftwege richtig trainieren k\u00f6nnen.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/bos-akademie.de\/en\/haeufige-fehler-bei-der-druckbelueftung\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"H\u00e4ufige Fehler bei der Druckbel\u00fcftung - 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