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How to Save Energy using Inverters to Control Speed

Better control of fan speed means better control of energy consumption and energy costs. What does an inverter do? Put simply, an inverter is used to vary the speed of the motor to match the required load. In most cases, fans are specified to match the maximum ventilation requirements of the setting. Installing an inverter allows you to control the speed of your fan motor to match the actual ventilation needs, rather than run the fan at full power constantly. An inverter can vary the motor speed with no loss of efficiency. Inverters can be...


Axair Shortlisted for HazardEx Awards – Voting Now Open

We are delighted to announce that we have been shortlisted for the Contribution to Safety Award as part of the HazardEx Awards 2019. Our range of Storm corrosion-resistant, ATEX certified fans have been selected for the award designed to recognise excellence in the hazardous area sector. A total of 25 nominations were shortlisted across 5 categories for the awards. Winners will be announced at the HazardEx Awards 2019 Conference & Exhibition Gala Dinner on Wednesday 27th February. Over the last decade, the Hazardex Awards programme h...


Shipyard LEV Systems

Local Exhaust Ventilation, or LEV, is a recommended method of shipyard ventilation. The nature of the shipbuilding industry means that air quality can be poor due to the presence hazardous chemicals, dust and welding fumes. To ensure workers are not exposed to these potentially harmful substances in often confined working spaces, LEV systems are key. LEV involves trapping airborne contaminants at their source before they pollute the air that is breathed by workers. For welding, cutting and heating processes, this type of ventilation must con...


The Growth of EC

Historically, AC motors were used as the principal air driving force in HVAC applications running constantly at full power. The continuously increasing demand for a more energy efficient solution with a greater range of operation possibilities led to the development of the Electronically Commutated (EC) motor. Since its development in the 1960s, EC technology has steadily grown market share and replaced AC technology in many air movement applications. Due to the substantial energy efficiency improvement in motor technology that EC offers, it...


Industrial Fans for Offshore Hazardous Areas

Given the corrosive and potentially hazardous nature of the environment, a number of variables need to be considered when selecting equipment and components for offshore applications. Fans within ventilation systems are no exception and can be found in various areas of an offshore platform, for example, compressor cooling enclosures, production platforms or gas turbine enclosures. These areas present varying degrees of hazard which the offshore fans must be suitable for. Two important variables for consideration include the need for ATEX (n...


ATEX Fume Extraction for Landfill Organic Waste

Landfill gas is a natural byproduct of the decomposition of organic materials which are put into landfill. The gas is composed of roughly 50% methane (CH4) and 50% carbon dioxide (CO2) and a small amount of non-methane organic compounds. Methane is a potent greenhouse gas and is harmful to the environment. When organic waste is first deposited into landfill, it goes through the initial stages of decomposition where small amounts of methane are generated. As the conditions change during the subsequent stages of decomposition, an increase ...


A Sweet Outcome: Stainless Steel ATEX Fan Case Study

Axair were recently tasked with finding an air movement solution for a major producer of throat and cough sweets. The customer, with a site based in the centre of a rural town, employs more than 200 people and was established over 200 years ago. The Problem A review of the company’s manufacturing processes revealed that the method of producing throat lozenges, using a powered starch mold process, has the potential to cause an explosion. Starch powder, like many food based powders used in the food processing industry, has the potentia...


The Importance of Battery Room Ventilation

Everyone knows the function of a battery, to store electricity in the form of chemical energy and to convert to electrical energy when required. Vented lead-acid batteries or flooded batteries as they are also commonly known, consist of plates that are flooded with an acid electrolyte. When charging, the electrolyte emits hydrogen through the vents in the battery. Under normal operations, the release of hydrogen is relatively small, but this is elevated during heavy recharge periods. It's an important consideration for battery room ventilation....


Carbon Refrigerants & Flammable Gases In Commercial Refrigeration

Carbon (CO2) refrigerants are changing the world of refrigeration as we know it, gradually replacing current Hydrofluorocarbon (HFC) and Hydrocarbon (HC) refrigerants in the market. HFC and HC refrigerants are currently the most commonly used refrigerants in refrigeration units. HFC refrigerants contain Hydrogen, Florine and Carbon. Although HFC refrigerants have no ozone depletion potential, it does however act as a greenhouse gas with an average Global Warming Potential (GWP) of 2000. As a result, responsible use and equipment inspecti...


EC VS AC

When it comes to EC VS AC there are pros and cons for both. EC technology has continued to increase in both awareness and popularity in the air movement market. The increase in popularity was evident from this year’s ISH HVAC tradeshow in Frankfurt where a significant number of exhibitors had EC fans and for most of them their EC fans took centre stage. For those who are still unsure, EC stands for electronically commutated and combines voltages of both AC and DC bringing the best of both technologies together to form EC. This means th...