{"id":1302,"date":"2021-06-10T16:53:02","date_gmt":"2021-06-10T16:53:02","guid":{"rendered":"https:\/\/blueseal-aircurtains.com\/?p=1302"},"modified":"2025-10-01T12:56:33","modified_gmt":"2025-10-01T12:56:33","slug":"managing-infiltration-loads","status":"publish","type":"post","link":"https:\/\/blueseal-aircurtains.com\/en\/2021\/06\/10\/managing-infiltration-loads\/","title":{"rendered":"BlueSeal &#8211; Air Curtains for Lower Emissions in TRU: Reducing Infiltration Loads to Cut Fuel Use and Pollution"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row css_animation=&#8221;&#8221; row_type=&#8221;row&#8221; use_row_as_full_screen_section=&#8221;no&#8221; type=&#8221;full_width&#8221; angled_section=&#8221;no&#8221; text_align=&#8221;left&#8221; background_image_as_pattern=&#8221;without_pattern&#8221;][vc_column][vc_column_text css=&#8221;&#8221;]<strong><span style=\"font-weight: 400;\">Research by CENEX UK, a not-for-profit organisation specialising in low-emission vehicle research, has shed light on the environmental footprint and energy consumption of transport refrigeration units (TRUs). Their April 2021 white paper highlights a significant source of inefficiency: infiltration load &#8211; the thermal energy lost whenever TRU doors are opened.<\/span><\/strong><\/p>\n<p><strong>April 2021, <a href=\"https:\/\/www.cenex.co.uk\/app\/uploads\/2021\/04\/Refrigerated-Transport-White-Paper.pdf\">https:\/\/www.cenex.co.uk\/app\/uploads\/2021\/04\/Refrigerated-Transport-White-Paper.pdf<\/a>\u00a0<\/strong>[\/vc_column_text][\/vc_column][\/vc_row][vc_row css_animation=&#8221;&#8221; row_type=&#8221;row&#8221; use_row_as_full_screen_section=&#8221;no&#8221; type=&#8221;full_width&#8221; angled_section=&#8221;no&#8221; text_align=&#8221;left&#8221; background_image_as_pattern=&#8221;without_pattern&#8221; z_index=&#8221;&#8221; padding_top=&#8221;30px&#8221; padding_bottom=&#8221;30px&#8221;][vc_column][vc_empty_space][vc_single_image image=&#8221;1303&#8243; img_size=&#8221;full&#8221; css=&#8221;&#8221; qode_css_animation=&#8221;&#8221;][vc_empty_space][\/vc_column][\/vc_row][vc_row css_animation=&#8221;&#8221; row_type=&#8221;row&#8221; use_row_as_full_screen_section=&#8221;no&#8221; type=&#8221;full_width&#8221; angled_section=&#8221;no&#8221; text_align=&#8221;left&#8221; background_image_as_pattern=&#8221;without_pattern&#8221;][vc_column][vc_column_text css=&#8221;&#8221;]<\/p>\n<h2>Understanding Infiltration Load in TRUs<\/h2>\n<p><span style=\"font-weight: 400;\">CENEX defines infiltration load as the heat gain that occurs when the doors of a refrigerated trailer or truck are open. The thermal loss happens in three ways:<\/span><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Air exchange &#8211; chilled air is replaced by ambient air<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Product warming &#8211; goods lose cold energy to warmer internal air<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Structural warming &#8211; fridge walls, floors, ceilings, and doors absorb heat from the ambient air<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">The CENEX graph shows that infiltration load accounts for roughly 70% of the total thermal refrigeration load &#8211; more than triple the contribution of the transmission load (heat transfer through insulated walls while doors are closed).<\/span><\/p>\n<h2>Why Reducing Infiltration Load Lowers Emissions<\/h2>\n<p><span style=\"font-weight: 400;\">When infiltration load is high, TRUs work much harder to restore set temperatures. This increases fuel consumption in diesel-powered refrigeration engines or drains battery reserves in electric TRUs. CENEX\u2019s data confirms that during delivery routes, door openings can increase cooling energy use by 3 to 5.5 times compared to closed-door transit.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Reducing infiltration load therefore directly lowers fuel usage, operating costs, and emissions &#8211; making it a key strategy for lower emissions in TRU operations.<\/span><\/p>\n<h2>How BlueSeal Air Curtains for Lower Emissions in TRU Work<\/h2>\n<p><span style=\"font-weight: 400;\">For over a decade, BlueSeal has provided air curtains for lower emissions in TRU systems, creating an invisible but effective barrier over rear and side doors. These air curtains significantly reduce the infiltration of warm air without interfering with driver operations.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Unlike PVC strip curtains, BlueSeal offers a hygienic, driver-friendly, and maintenance-light solution. Independent testing shows BlueSeal can reduce infiltration load by 30-45%, lowering total thermal load and cutting both CO\u2082 emissions and fuel costs.<\/span><\/p>\n<h2>The Real-World Scale of Infiltration Loads<\/h2>\n<p><span style=\"font-weight: 400;\">CENEX\u2019s scenario of just four door openings per day is likely conservative. In urban distribution routes, doors may be opened far more frequently and for longer durations &#8211; meaning actual infiltration loads could exceed the study\u2019s findings.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">This challenge is even greater in frozen transport, where temperature differences are larger and product integrity is more sensitive to small thermal changes. For these cases, air curtains for lower emissions in TRU become even more critical.<\/span><\/p>\n<h2>TRU Auxiliary Engines: A Hidden Emissions Problem<\/h2>\n<p><span style=\"font-weight: 400;\">Many large refrigerated trucks and trailers use auxiliary diesel engines to power refrigeration units. These engines emit:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">16\u00d7 more nitrogen oxides (NOx) than a truck\u2019s main engine<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">40\u00d7 more particulate matter<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Because auxiliary engines must work harder to counter high infiltration loads, they produce more pollution. By reducing infiltration load, BlueSeal air curtains for lower emissions in TRU directly reduce the runtime and workload of these engines, delivering both environmental and economic benefits.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">In summary: CENEX\u2019s research confirms infiltration load as the largest component of TRU thermal demand. BlueSeal\u2019s air curtains for lower emissions in TRU help operators tackle this problem head-on, lowering fuel use, cutting emissions, and protecting temperature-sensitive goods during transport.<\/span>[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>BlueSeal\u2019s innovative air curtains for lower emissions in TRU are designed to slash infiltration loads &#8211; the largest source of thermal loss in refrigerated transport. By creating a precise airflow barrier, they reduce cooling energy demand by up to 45%, cutting fuel costs, extending TRU lifespan, and significantly lowering emissions from auxiliary diesel engines.<\/p>\n","protected":false},"author":3,"featured_media":1303,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[6],"tags":[],"class_list":["post-1302","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-insights"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Air Curtains for Lower Emissions in TRU | BlueSeal<\/title>\n<meta name=\"description\" content=\"BlueSeal air curtains for lower emissions in TRU cut infiltration load by up to 45%, reducing fuel use, CO\u2082 output, and TRU engine pollution.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blueseal-aircurtains.com\/en\/2021\/06\/10\/managing-infiltration-loads\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Air Curtains for Lower Emissions in TRU | BlueSeal\" \/>\n<meta property=\"og:description\" content=\"BlueSeal air curtains for lower emissions in TRU cut infiltration load by up to 45%, reducing fuel use, CO\u2082 output, and TRU engine pollution.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blueseal-aircurtains.com\/en\/2021\/06\/10\/managing-infiltration-loads\/\" \/>\n<meta property=\"og:site_name\" content=\"BlueSeal air curtains by Brightec BV\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/brightecbv\" \/>\n<meta property=\"article:published_time\" content=\"2021-06-10T16:53:02+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-10-01T12:56:33+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/blueseal-aircurtains.com\/wp-content\/uploads\/2024\/11\/cenex-thermal-refrigeration-load-980x472-1.png\" \/>\n\t<meta property=\"og:image:width\" content=\"980\" \/>\n\t<meta property=\"og:image:height\" content=\"472\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Christiane Wolf\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@BrightecBv\" \/>\n<meta name=\"twitter:site\" content=\"@BrightecBv\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Christiane Wolf\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/blueseal-aircurtains.com\\\/en\\\/2021\\\/06\\\/10\\\/managing-infiltration-loads\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/blueseal-aircurtains.com\\\/en\\\/2021\\\/06\\\/10\\\/managing-infiltration-loads\\\/\"},\"author\":{\"name\":\"Christiane Wolf\",\"@id\":\"https:\\\/\\\/blueseal-aircurtains.com\\\/en\\\/#\\\/schema\\\/person\\\/b27376fa0d9b473ffdf596e0da884b09\"},\"headline\":\"BlueSeal &#8211; 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