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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...


Exhibiting at the S-Lab Show

This week we attended the S-Lab show “Science, Innovation, and Translation: The Design and Operation of Research laboratories, Incubators and Science Park Facilities” which was held at the York Racecourse. This innovative show is a unique initiative that supports innovation and laboratory improvements. To support this, during the 2 day event, as well as having numerous exhibitors showing the delegates what is new and forward thinking in the market there where continuous seminars and lectures throughout the day.  As many as 5 seminars at a ...


Axair’s New ATEX EC IP68 Compact Axial Fan

Here at Axair we are delighted to announce our newest product. Alongside extensive research and development the Axair group, comprised of Axair Fans and Axair Refrigeration, has strived to bring this sought after product to the market. Our new ATEX EC compact frame axial fan which is also IP68 is our newest addition to our existing wide range of products. This axial fan is not just an innovation to us as a company, but also to the air movement industry. It comes in 3 speeds, high (3000rpm), medium (2500rpm) and low (1700rpm) and comes in the...