{"id":15141,"date":"2025-09-04T10:58:40","date_gmt":"2025-09-04T08:58:40","guid":{"rendered":"https:\/\/mag.ebmpapst.com\/en\/?p=15141"},"modified":"2025-09-05T08:00:15","modified_gmt":"2025-09-05T06:00:15","slug":"power-fans-for-cooling-electronics","status":"publish","type":"post","link":"https:\/\/mag.ebmpapst.com\/en\/industries\/electronics\/power-fans-for-cooling-electronics_15141\/","title":{"rendered":"Power fans for elec\u00adtronics cooling"},"content":{"rendered":"\n<p>Today, elec\u00adtronics cooling is mainly based on axial compact fans, espe\u00adcially because they are easy to inte\u00adgrate and deliver high air flow rates thanks to the prin\u00adci\u00adples involved. However, axial compact fans have their limits, for example if ever-more powerful elec\u00adtronics are housed in the same space or have to be made even more compact in telecom\u00admu\u00adni\u00adca\u00adtions systems or data centers (Fig. above).<\/p>\n\n\n\n<p>To increase the cooling capacity, two axial compact fans are simply connected in series, which, in prac\u00adtice, is usually achieved using counter-rotating rotors. This kind of two-stage fan design results in a higher pres\u00adsure in prin\u00adciple, but the system also has signif\u00adi\u00adcantly higher noise levels. This means that it doesn\u2019t fulfill stan\u00addards and guide\u00adlines for noise protec\u00adtion, such as those from NEBS (Network Equip\u00adment Building System), OSHA (Occu\u00adpa\u00adtional Safety and Health Admin\u00adis\u00adtra\u00adtion), ANSI (Amer\u00adican National Stan\u00addards Insti\u00adtute) or ETSI (Euro\u00adpean Telecom\u00admu\u00adni\u00adca\u00adtions Stan\u00addards Insti\u00adtute). Addi\u00adtional noise reduc\u00adtion is gener\u00adally not an option, as it requires too much space and drives up the costs.<\/p>\n\n\n\n<div class=\"wp-block-group alignfull mgznkr-cta-retrofit-banner\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<style>\n.mgznkr-cta-retrofit-banner .alignwide.banner-width {\n  max-width: 100%;\n  width: 1240px;\n  margin: 0 auto;\n--mark-bgcolor: #00a633;\n--mark-color: white;\n}\n@media (max-width: 781px) {\n.mgznkr-cta-retrofit-banner .wp-block-cover .wp-block-cover__image-background {\nobject-position: 17% 50%!important;\n}\n\n.mgznkr-column-spacer p {display: none; }\n}\n@media (min-width: 782px) {\n.mgznkr-column-spacer p a {\n  min-height: 290px;\n  min-width: 100%;\n  display: block;\n  border-radius: 50px;\nfont-size: 0;\n}\n}\n\n.mgznkr-cta-retrofit-banner .wp-block-columns .wp-block-column:first-of-type{\n    position:relative;\n}\n.mgznkr-cta-retrofit-banner .wp-block-columns .wp-block-column:first-of-type::before {\n    content: \"\";\n    position: absolute;\n    width: 170%;\n    height: 100%;\n    background: #a2b91e;\n    z-index: 0;\n    top: 0;\n    left: 0;\n}\n.mgznkr-cta-retrofit-banner .wp-block-column{\n    z-index: 10;\n    &:first-of-type{\n        padding-left: 4rem;\n    }\n}\n.mgznkr-cta-retrofit-banner .wp-block-column *{\nposition: relative;\nz-index: 10;\n}\n.mgznkr-cta-retrofit-banner .wp-block-column figure.wp-block-image{\n    margin-bottom: 0;\n}\n@media (width < 782px){\n.mgznkr-cta-retrofit-banner .mgznkr-mobile-hidden{\ndisplay: none;\n}\n.mgznkr-cta-retrofit-banner .wp-block-columns .wp-block-column:first-of-type{\n  padding-right: 4rem;\n}\n.mgznkr-cta-retrofit-banner .wp-block-columns .wp-block-column:first-of-type::before {\n  width: 100%;\n}\n}\n\n<\/style>\n\n\n\n<div style=\"height:32px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-cover\" style=\"min-height:350px;aspect-ratio:unset;\"><img decoding=\"async\" class=\"wp-block-cover__image-background wp-image-38370 size-large\" alt src=\"https:\/\/ebmpapst-7237.kxcdn.com\/de\/files\/2025\/08\/L2A-Awareness-Campaign-960x400.webp\" data-object-fit=\"cover\"><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim-0 has-background-dim\" style=\"background-color:#e0e6e6\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-block-cover-is-layout-constrained\">\n<div class=\"wp-block-columns alignwide banner-width is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<h2 class=\"wp-block-heading mgznkr-click has-white-color has-text-color has-link-color wp-elements-9c437f00d7951dd60554c7a2708cd1c5\" id=\"retrofit-banner-head\" style=\"font-size:1.6em;text-transform:uppercase\"><a href=\"https:\/\/www.ebmpapst.com\/de\/en\/campaigns\/industry-campaigns\/data-center.html#cooling-solutions\" target=\"_blank\" rel=\"noreferrer noopener\">High perfor\u00admance, low carbon:<\/a><\/h2>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>ebm-papst reimag\u00adines data center cooling. Our effi\u00adcient cooling solu\u00adtions combine energy effi\u00adciency with high power density.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button is-style-fill mgznkr-click\" id=\"retrofit-banner-button\"><a class=\"wp-block-button__link has-background has-custom-font-size wp-element-button\" href=\"https:\/\/www.ebmpapst.com\/de\/en\/campaigns\/industry-campaigns\/data-center.html#cooling-solutions\" style=\"background-color:#0072bb;font-size:18px\" target=\"_blank\" rel=\"noreferrer noopener\">Ensure reli\u00adable cooling now <i class=\"mgznkr-icon fa fa-chevron-right fas\"><\/i><\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-bottom mgznkr-column-spacer mgznkr-mobile-hidden is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/ebmpapst-7237.kxcdn.com\/de\/files\/2025\/08\/L2A-Awareness-Campaign-00-scaled.webp\" alt class=\"wp-image-38386\" style=\"object-fit:cover\"><\/figure>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<div style=\"height:36px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">New devel\u00adop\u00adment approach for a convincing solu\u00adtion<\/h2>\n\n\n<div class=\"wp-block-image wp-image-23774 size-article-300\">\n<figure class=\"alignright\"><img decoding=\"async\" src=\"https:\/\/ebmpapst-7237.kxcdn.com\/de\/files\/2021\/04\/ebm-papst_DiaForce_1024-300x289.jpg\" alt class=\"wp-image-23774\"><figcaption class=\"wp-element-caption\">Fig. 1: Compared to a conven\u00adtional fan solu\u00adtion, the new DiaForce delivers up to 50% more air perfor\u00admance and also gener\u00adates signif\u00adi\u00adcantly less noise. (Photo | ebm-papst)<\/figcaption><\/figure>\n<\/div>\n\n\n<p>So the special\u00adists at ebm-papst chose a new approach to develop a fan that delivers more power without being louder and yet is compact. The St. Georgen, Mulfingen and Shanghai sites pooled their exper\u00adtise. In close consul\u00adta\u00adtion with a major elec\u00adtronics manu\u00adfac\u00adturer, the DiaForce (Fig. 1) was devel\u00adoped, a new compact fan that can meet the require\u00adments of elec\u00adtronics cooling in all respects and whose dimen\u00adsions are the same as a conven\u00adtional two-stage solu\u00adtion.<\/p>\n\n\n\n<p>The concept behind the new devel\u00adop\u00adment is convincing, but the DiaForce's secret lies in the unique geom\u00adetry of its impeller and housing. This mini\u00admizes turbu\u00adlence in the edge area, resulting in a signif\u00adi\u00adcant reduc\u00adtion in noise. The fan impeller\u2019s outlet opening is also larger than the intake opening. This means that air flows through the fan in both an axial and radial direc\u00adtion, which ensures a high pres\u00adsure increase (Fig. 2).<\/p>\n\n\n\n<p>There\u00adfore, the DiaForce is char\u00adac\u00adter\u00adized as being between an axial and a centrifugal fan. The basic axial design, which is cheaper to install, remains. A partic\u00adular advan\u00adtage in terms of aero\u00addy\u00adnamics is that the DiaForce offers an air perfor\u00admance curve with no dip. At the same time, aero\u00addy\u00adnamic opti\u00admiza\u00adtions make it the quiet\u00adest fan with this power density (Fig. 3).<\/p>\n\n\n\n<figure class=\"wp-block-image alignnone wp-image-23750 size-full\"><img decoding=\"async\" src=\"https:\/\/ebmpapst-7237.kxcdn.com\/de\/files\/2021\/04\/Bild_3_Kennlinienfeld_DiaForce.jpg\" alt class=\"wp-image-23750\"><figcaption class=\"wp-element-caption\">Fig. 2: The typical pres\u00adsure increase in the DiaForce: at the oper\u00adating point marked blue in the example, the DiaForce reaches over 17,000 rpm with a power consump\u00adtion of 516 W. This results in over 1,800 Pa in pres\u00adsure and &gt;500 m\u00b3\/h in air perfor\u00admance. (ebm-papst)<\/figcaption><\/figure>\n\n\n\n<p>The compact fan has up to 6 dB(A) lower noise emis\u00adsions than a conven\u00adtional axial compact fan and has up to 50% higher air perfor\u00admance. The higher air perfor\u00admance is often not required in normal oper\u00ada\u00adtion, as fans that cool elec\u00adtronics often operate at partial load. However, a suffi\u00adcient power reserve is crucial to ensuring that the elec\u00adtronics continue to func\u00adtion suffi\u00adciently under condi\u00adtions outside normal oper\u00ada\u00adtion. For example, if the air condi\u00adtioning in the room is faulty and the ambient temper\u00ada\u00adture rises, there\u2019s enough of a reserve avail\u00adable to speed up the fan as required.<\/p>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-group mgznkr-color-box has-background\" style=\"background-color:#00a633\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<h3 class=\"wp-block-heading has-white-color has-text-color has-link-color wp-elements-7373601eaf6fd5b34ae7665e4bee427d\">\u201cAxial and centrifugal in one fan\u201d<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/ebmpapst-7237.kxcdn.com\/de\/files\/2021\/05\/ebmpapst_diaforce_diagonalluefter_1024.jpg\" alt class=\"wp-image-38645\" style=\"width:400px\"><\/figure>\n<\/div>\n\n\n<p class=\"has-white-color has-text-color has-link-color wp-elements-966fb04f5cae647e09f0046f26683b1e\">The DiaForce diag\u00adonal compact fan is revo\u00adlu\u00adtion\u00adizing elec\u00adtronics cooling.&nbsp;<strong>Chris\u00adtian Stern<\/strong>, Product Manager at ebm-papst in St. Georgen, reveals why this is.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-white-color has-text-color has-background has-link-color has-custom-font-size wp-element-button\" href=\"https:\/\/mag.ebmpapst.com\/en\/industries\/electronics\/diaforce-diagonal-fan-combines-axial-and-centrifugal-in-one-fan_14990\/\" style=\"background-color:#0072bb;font-size:16px\" target=\"_blank\" rel=\"noreferrer noopener\">Read the article <i class=\"mgznkr-icon fa fa-chevron-right fas\"><\/i><\/a><\/div>\n<\/div>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Powerful and intel\u00adli\u00adgent DC motor<\/h2>\n\n\n\n<p>The devel\u00adopers have also taken an impor\u00adtant step with the motor\u00adiza\u00adtion. The driving force behind the compact fan is a three-strand, energy-effi\u00adcient DC motor with a motor power of 500 W. The motor design is very compact and oper\u00adates at high effi\u00adciency. The newly devel\u00adoped 500 W elec\u00adtronics have a lot to offer: a powerful micro\u00adcon\u00adtroller is at the heart of the intel\u00adli\u00adgent motor regu\u00adla\u00adtion. It enables maximum possible torque in all load ranges and provides optimum effi\u00adciency and struc\u00adture-borne noise. The inte\u00adgrated locked-rotor protec\u00adtion ensures safety. A config\u00adurable control input and various optional output signals are avail\u00adable as inter\u00adfaces. Prac\u00adtical options include a signal go\/no go alarm, an alarm with a speed limit, and an internal or external temper\u00ada\u00adture sensor. The DiaForce is avail\u00adable in three sizes with edge lengths of 120, 80, and 40 mm.<\/p>\n\n\n\n<figure class=\"wp-block-image alignnone wp-image-23760 size-full\"><img decoding=\"async\" src=\"https:\/\/ebmpapst-7237.kxcdn.com\/de\/files\/2021\/04\/Durchstroemung_Vergleich.jpg\" alt class=\"wp-image-23760\"><figcaption class=\"wp-element-caption\">Fig. 3: A direct compar\u00adison between a single-stage axial compact fan (a), a two-stage axial compact fan (b) and the new DiaForce diag\u00adonal compact fan (c). (Photo | ebm-papst)<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Intel\u00adli\u00adgent main\u00adte\u00adnance concepts with FanCheck<\/h2>\n\n\n\n<p>The optional FanCheck func\u00adtion also enables intel\u00adli\u00adgent main\u00adte\u00adnance concepts to be imple\u00admented: Fans are usually replaced unex\u00adpect\u00adedly when they fail. If the fans cool elec\u00adtronics that have high avail\u00adability require\u00adments, such as in data centers or mobile commu\u00adni\u00adca\u00adtion base stations, they have to be replaced very quickly. Some service concepts also stip\u00adu\u00adlate that all the fans in the system have to be replaced if this happens. This often leads to signif\u00adi\u00adcant outlay because of mate\u00adrial costs and because service tech\u00adni\u00adcians have to travel to instal\u00adla\u00adtion sites. The FanCheck func\u00adtion from ebm-papst solves this problem.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>FanCheck contin\u00adu\u00adously calcu\u00adlates the statis\u00adtical service life of the fan during oper\u00ada\u00adtion based on the actual oper\u00adating condi\u00adtions.<cite><\/cite><\/p>\n<\/blockquote>\n\n\n\n<p>This allows the replace\u00adment process to be planned cost-effec\u00adtively and enables reduced replace\u00adment costs. In addi\u00adtion, it increases the avail\u00adability of the devices. The customer can specify at which time and in which way the fan is to provide status infor\u00adma\u00adtion or warn\u00adings. It can monitor the remaining service life closely or trigger a simple alarm when the remaining service life goes below a previ\u00adously set value. In this way, FanCheck can be easily inte\u00adgrated into existing control systems.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">New series enable further areas of appli\u00adca\u00adtion<\/h2>\n\n\n\n<p>In addi\u00adtion to the flag\u00adship DiaForce 120, two further sizes \u2013 40 mm and 80 mm \u2013 are also avail\u00adable. The compact DiaForce 80 impresses in appli\u00adca\u00adtions such as server trays and high-perfor\u00admance power supply units with high perfor\u00admance and pleasant noise char\u00adac\u00adter\u00adis\u00adtics. The DiaForce 40 is a smaller addi\u00adtion to the product range and brings its advan\u00adtages to routers, switches, network tech\u00adnology, indus\u00adtrial automa\u00adtion and control systems, and robotics.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full text-on-image\"><img decoding=\"async\" src=\"https:\/\/ebmpapst-7237.kxcdn.com\/de\/files\/2021\/05\/Image_X_DiaForce40-80_ebm-papst.jpg\" alt class=\"wp-image-38624\"><figcaption class=\"wp-element-caption\"><mark>In addi\u00adtion to the flag\u00adship DiaForce 120, two further sizes \u2013 40 mm and 80 mm \u2013 are also avail\u00adable.<\/mark> <\/figcaption><\/figure>\n\n\n\n<p class=\"has-text-align-right like-figcaption\">(Photo | ebm-papst)<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Built-in intel\u00adli\u00adgence<\/h2>\n\n\n\n<p>When it comes to choosing the right fan, it\u2019s not just product char\u00adac\u00adter\u00adis\u00adtics, such as energy effi\u00adciency and perfor\u00admance values, that are crucial but also the intel\u00adli\u00adgence and commu\u00adni\u00adca\u00adtion options that have been imple\u00admented. Thanks to condi\u00adtion moni\u00adtoring, users can keep an eye on the oper\u00adating para\u00adme\u00adters of their system at any time and carry out a better error analysis and opti\u00admiza\u00adtion because the oper\u00adating history is docu\u00admented. Demand-oriented and predic\u00adtive oper\u00ada\u00adtion enables longer oper\u00adating times, mini\u00admizing energy consump\u00adtion and noise gener\u00ada\u00adtion, and self-regu\u00adlating at different oper\u00adating states. Predic\u00adtive main\u00adte\u00adnance allows needs-based service work to be planned so that longer service inter\u00advals and high avail\u00adability can be achieved with a low number of down\u00adtimes.&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Today, elec\u00adtronics cooling is mainly based on axial compact fans, espe\u00adcially because they are easy to inte\u00adgrate and deliver high air flow rates thanks to the prin\u00adci\u00adples involved. However, axial compact fans have their limits, for example if ever-more powerful elec\u00adtronics are housed in the same space or have to be made even more compact [\u2026]<\/p>\n","protected":false},"author":31,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"wp_typography_post_enhancements_disabled":false,"footnotes":""},"categories":[5,16,15],"tags":[164],"class_list":["post-15141","post","type-post","status-publish","format-standard","hentry","category-electronics","category-fans","category-telecommunication","tag-compactpower"],"acf":[],"_links":{"self":[{"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/posts\/15141","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/users\/31"}],"replies":[{"embeddable":true,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/comments?post=15141"}],"version-history":[{"count":24,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/posts\/15141\/revisions"}],"predecessor-version":[{"id":21903,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/posts\/15141\/revisions\/21903"}],"wp:attachment":[{"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/media?parent=15141"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/categories?post=15141"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/tags?post=15141"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}