{"id":15202,"date":"2021-06-01T07:23:34","date_gmt":"2021-06-01T05:23:34","guid":{"rendered":"https:\/\/mag.ebmpapst.com\/en\/?p=15202"},"modified":"2024-03-12T17:53:33","modified_gmt":"2024-03-12T16:53:33","slug":"plug-play-axial-fans-for-applications-with-high-back-pressure","status":"publish","type":"post","link":"https:\/\/mag.ebmpapst.com\/en\/industries\/refrigeration-ventilation\/plug-play-axial-fans-for-applications-with-high-back-pressure_15202\/","title":{"rendered":"Plug & play axial fans for appli\u00adca\u00adtions with high back pres\u00adsure"},"content":{"rendered":"

At the start of 2020, ebm-papst intro\u00adduced its AxiEco Protect axial fans with guard grills, which are able to over\u00adcome high back pres\u00adsure. The fan and motor specialist is now going a step further by expanding its existing AxiEco series with the AxiEco Perform (Fig. 1) axial fans. These achieve even greater effi\u00adciency and pres\u00adsure stability and come with an easy-to-install housing made of composite mate\u00adrial.<\/p>\n

Fig. 1: Extract from the product range: new AxiEco Perform EC axial fan in size 350 with housing made of composite mate\u00adrial. (Photo | ebm-papst)<\/p><\/div><\/div>\n

The air perfor\u00admance curve is much steeper than that of compa\u00adrable axial fans, and effi\u00adciency remains high, even when back pres\u00adsure rises (Fig. 2). As a compact plug & play solu\u00adtion with CE marking, the fans are easy to inte\u00adgrate into appli\u00adca\u00adtions. Users won\u2019t have to worry about nozzles or distance to the impeller, nor concern them\u00adselves with conducting their own ErP assess\u00adment.<\/p>\n

Thanks to the addi\u00adtion of the new fans, the AxiEco series now covers a very broad range of appli\u00adca\u00adtions. For example, the AxiEco Protect fan with guard grill is partic\u00adu\u00adlarly well-suited for noise-sensi\u00adtive appli\u00adca\u00adtions, as its noise emis\u00adsions are very low. By contrast, the AxiEco Perform fan with housing is recom\u00admended when a ready-to-install fan is needed. With air flows of up to 12,000 m\u00b3\/h and pres\u00adsures of up to nearly 500 Pa, they are ideal for a broad spec\u00adtrum of appli\u00adca\u00adtions, ranging from heat pumps and evap\u00ado\u00adra\u00adtors to indus\u00adtrial venti\u00adlation systems and the cooling of air compres\u00adsors. The new fans with housing come in sizes 300, 350, 400, 450, and 500 and are avail\u00adable in EC and AC design. Both the EC and AC vari\u00adants of this series also meet the require\u00adments of the future ErP Direc\u00adtive and can be used for both exhaust and suction.<\/p>\n

Fig. 2: The air perfor\u00admance curve of the AxiEco Perform is much steeper than that of the HyBlade, and it offers all that at a high effi\u00adciency. (Graphic| ebm-papst)<\/p><\/div><\/div>\n

Aero\u00addy\u00adnamic design increases effi\u00adciency and air throw<\/h2>\n

Opti\u00admized aero\u00addy\u00adnamics lie at the heart of the fan\u2019s design and are what help to increase effi\u00adciency and pres\u00adsure: the impeller, inte\u00adgrated diffusor ring and hub form a compact unit and the blade tips pass over straight into the inte\u00adgrated diffusor ring. This elim\u00adi\u00adnates the head gap between the nozzle and the impeller, which also prevents air from flowing over the tips of the blades, as seen in conven\u00adtional axial fans. The new design both increases effi\u00adciency and reduces noise. The inte\u00adgrated diffusor ring also func\u00adtions as a diffuser that is directly inte\u00adgrated into the impeller. It increases the pres\u00adsure, resulting in reduced exit loss and less noise. Thanks to the inlet ring that immerses in the impeller and a larger outlet opening, the fan has an optimal flow (Fig. 3).<\/p>\n

Fig. 3: Thanks to the inlet ring that immerses in the impeller, the large outlet opening, and the housing design, the AxiEco Perform fan has an optimum flow. (Graphic| ebm-papst)<\/p><\/div><\/div>\n

The fan also features an aero\u00addy\u00adnam\u00adi\u00adcally opti\u00admized housing with inte\u00adgrated guard grill and guide blades. Cavi\u00adties in the housing corners improve the flow; the guide blades ensure that the swirl in the outflow field of the fan, and thus the dynamic losses, are reduced to a minimum. The air throw is also higher compared to conven\u00adtional axial fans (Fig. 4). This means that in large refrig\u00ader\u00adated ware\u00adhouses for example, there is an even distri\u00adb\u00adu\u00adtion of cold air, so fewer fans may suffice.<\/p>\n

Appli\u00adca\u00adtion-compat\u00adible design details<\/h2>\n

Fig. 4: The air throw from the AxiEco Perform is consid\u00ader\u00adably better than from the HyBlade. (Graphic| ebm-papst)<\/p><\/div><\/div>\n

In terms of exhaust-based appli\u00adca\u00adtions, an optional guard grill can be attached to the intake side of the housing. If the fans are used for evap\u00ado\u00adra\u00adtors, an air bag that closes the air outlet opening during defrosting and when the fan is switched off can be easily installed. It is fixed to the cylinder-shaped housing using the stan\u00addard tensioning belt.<\/p>\n

The air bag keeps the trapped heat in the evap\u00ado\u00adrator housing during the defrosting process. This signif\u00adi\u00adcantly reduces the defrosting time and makes for a low final defrosting temper\u00ada\u00adture, thus saving a consid\u00ader\u00adable amount of energy.<\/p>\n

The flow profile at the outlet of the AxiEco Perform fan ensures that the inte\u00adgrated guard grill does not freeze over as quickly, as there is back\u00adflow \u2013 even at high back pres\u00adsures. And the impeller with the inte\u00adgrated diffusor ring has been produced in highly resis\u00adtant composite mate\u00adrial, a mate\u00adrial that, in and of itself, discour\u00adages icing. The grooves on the rear of the fan blades provide the neces\u00adsary mechan\u00adical strength for achieving the high impeller speeds for the impres\u00adsively high pres\u00adsures. They also ensure that any water present can easily drain away in appli\u00adca\u00adtions in which the fan has been installed with a vertical motor shaft.<\/p>\n

Fig. 5: Different instal\u00adla\u00adtion methods for intake and exhaust oper\u00ada\u00adtion. (Graphic| ebm-papst)<\/p><\/div><\/div>\n

Different instal\u00adla\u00adtion options and needs-based control<\/h2>\n

The sophis\u00adti\u00adca\u00adtion of the housing design makes the fan easier to install and enables a number of poten\u00adtial instal\u00adla\u00adtion methods (Fig. 5). For example, for intake oper\u00ada\u00adtion, the fans can be installed \u201con top\u201d, i.e. on top of the customer\u2019s device, or \u201csemi-top\u201d (recessed into the device). For exhaust oper\u00ada\u00adtion, the entire fan unit is installed in the customer\u2019s device the other way around using the central flange and fitted with the intake-side guard grill. When used in venti\u00adlation pipes, the central flange makes it easier to install the fan directly on the pipe system. This makes it easy to inte\u00adgrate the fans into venti\u00adlation appli\u00adca\u00adtions.<\/p>\n

Fig. 6: The fans come in sizes 300, 350, 400, 450, and 500 and are avail\u00adable in EC and AC design. With air flows of up to 12,000 m\u00b3\/h and pres\u00adsures of up to nearly 500 Pa, they are ideal for many different appli\u00adca\u00adtions in refrig\u00ader\u00ada\u00adtion, air condi\u00adtioning, venti\u00adlation tech\u00adnology and mechan\u00adical engi\u00adneering. (Graphic| ebm-papst)<\/p><\/div><\/div>\n

The new AxiEco Perform fans satisfy the require\u00adments of the next ErP stage, regard\u00adless of the motor tech\u00adnology they have. And the fans with EC motors offer many more advan\u00adtages. In compar\u00adison to AC motors, EC motors func\u00adtion with consid\u00ader\u00adably higher effi\u00adciency. They also generate less waste heat, an impor\u00adtant advan\u00adtage for chilling appli\u00adca\u00adtions. It is also possible to control and monitor the fans on a needs basis using a 0-10 V signal or MODBUS. These features help the EC fans to work very effi\u00adciently, partic\u00adu\u00adlarly in the partial-load range, and signif\u00adi\u00adcantly reduce energy consump\u00adtion. This facil\u00adi\u00adtates indi\u00advidual adap\u00adta\u00adtion to partic\u00adular cooling require\u00adments.<\/p>\n

Typical exam\u00adples include the maturing of cheese and the ripening of sensi\u00adtive fruit and vegeta\u00adbles in storage, and varying day and night oper\u00ada\u00adtion. The new features enable needs-based air flow to be easily set in venti\u00adlation appli\u00adca\u00adtions as well. The high speeds of the EC motors also provide much higher air perfor\u00admance, which are hugely welcomed for many indus\u00adtrial appli\u00adca\u00adtions (Fig. 6).<\/p>\n","protected":false},"excerpt":{"rendered":"

At the start of 2020, ebm-papst intro\u00adduced its AxiEco Protect axial fans with guard grills, which are able to over\u00adcome high back pres\u00adsure. The fan and motor specialist is now going a step further by expanding its existing AxiEco series with the AxiEco Perform (Fig. 1) axial fans. These achieve even greater effi\u00adciency and pres\u00adsure [\u2026]<\/p>\n","protected":false},"author":12,"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":[91,16,9],"tags":[],"class_list":["post-15202","post","type-post","status-publish","format-standard","hentry","category-erp","category-fans","category-refrigeration-ventilation"],"acf":[],"_links":{"self":[{"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/posts\/15202","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\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/comments?post=15202"}],"version-history":[{"count":10,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/posts\/15202\/revisions"}],"predecessor-version":[{"id":17034,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/posts\/15202\/revisions\/17034"}],"wp:attachment":[{"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/media?parent=15202"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/categories?post=15202"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/tags?post=15202"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}