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The Versatile EHND Series from Rosenberg

Our supplier partner, Rosenberg, has developed high efficiency centrifugal fans ideal for the movement of clean or slightly dusty air, gases or steam. The ERND/E and EHND/E series offer adaptable, all-round fans that can be used in a huge range of applications, from simple exhausting to demanding offshore environments. Product range ERND = (E) Single inlet, (R) forward curved centrifugal impeller, (N) IEC standard motor, (D) three phase ERNE = (E) Single inlet, (R) forward curved centrifugal impeller, (N) IEC standard motor, (E) single pha...


Extraction from Test Chambers

Test chambers are designed to examine various types of materials in many different ways for a wide scope of applications. Chambers may be required to measure corrosion or to test components to destruction. Their primary function is to speed up the processes to simulate time in an environment with certain characteristics. Finding the long term resistance to corrosion of materials requires the speeding up of corrosion by using certain substances. For example, a salt spray testing chamber would recreate the effects of a harsh offshore environme...


Swimming Pool Extraction Fans: Corrosion Resistance

Chlorine is widely used to treat water for swimming pools in leisure centres and domestic pools. When extracting chlorine fumes from areas such as plant rooms and storage cupboards after dosing, the air may be corrosive. If this is the case, it will need to be extracted via a polypropylene fan and plastic ductwork as metal systems would corrode over time. ATEX Requirements Chlorine has the potential to become explosive when mixed with certain other chemicals. Therefore, the swimming pool extraction system may need to be ATEX (Atmospheres Expl...


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...


Hospital Chemical Storage Ventilation

Hospitals require a number of potentially hazardous chemicals in day to day maintenance, cleaning, sterilisation, testing and operating applications. The health care sector represents one of the largest users of chemicals in the UK. The storage of these chemicals involves a number of considerations in terms of temperature, ignition control, ventilation and segregation. In this article, we focus on chemical storage ventilation. The ventilation of chemical storage areas is of paramount importance to ensure clean air and a safe environment for ...


The Importance of Shipping Warehouse Ventilation

According to energy advisors, warehouses spend on average 15% of their budget on energy bills every year. Mechanical ventilation can contribute to a high percentage of this spend. In this article, we explore the importance of effective warehouse ventilation. Like many hazards, poor ventilation poses a risk to employee health, machines and equipment as well as goods and products. To avoid negative impacts on businesses ventilation hazards must be eliminated. These include a reduction in productivity, a decreased yield, machines or equipment m...


Corrosive Fume Extraction in the Water Treatment Process

To provide water that is safe for human consumption, there are a number of processes that the water treatment industry use. Coagulation and flocculation are often the first steps in water treatment. Chemicals with a positive charge are added to the water. The positive charge of these chemicals neutralises the negative charge of dirt and other dissolved particles in the water. When this occurs, the particles bind with the chemicals and form larger particles, called floc. To separate the floc from the water, it is allowed to settle and fal...


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...


Rolling Stock HVAC Case Study

Schaltbau Transportation UK are a mechanical and electrical engineering company that provide a full overhaul package to bring rolling stock HVAC systems and products back to day one condition. Their dedicated HVAC team are available to support all maintenance requirements at their facility in Milton Keynes or via their mobile service team at customers’ sites. They will provide analysis of the systems, make recommendations for improved performance and reliability and will handle obsolescence issues. Schaltbau approached Axair looking for co...


Fans for Spray Booth Extracts

Manufacturers of spray booths need to ensure that they have effective ventilation for two main reasons; to protect spray booth operators by extracting paint fumes and to ensure the best paint finish possible by removing excess particles of the paint spray. During the spray process, paint particles are released into the atmosphere through the spray nozzle which increases the release of potentially hazardous vapours and paint particles. Professional spray paints and lacquers often contain volatile organic compounds which are emitted as gases. ...