Industrial fans play a vital role in the movement of air and gas in industrial facilities. Unlike industrial blowers, which move air in a more localized manner, fans control airflow over large regions. There are threemain types of industrial fans:
Mixed Flow Fan. Combines the airflow methods of several fan types, resulting in high-pressure movement.
Axial Fan. Ideal for applications requiring low pressure and high flow rates. This type of fan creates airflow that moves parallel to its axis.
Centrifugal Fan. Centrifugal fans intake air at their center and release it around their edges. They provide slightly lower flow than axial fans, but also have higher pressure.
Axial fans are ideal for applications such as condenser cooling and large-scale air movement, and centrifugal fans are commonly used in applications such as electronic cooling, process heating and cooling, and boiler combustion air. Regardless of the type of fan you choose, it is imperative to work with expert industrial fan manufacturers to ensure optimal results. Here are the most important factors to consider when choosing the right industrial fan manufacturer.
They Offer Replacement Parts and Field Service to Help Reduce Potential Downtime
Generic parts and OEM parts often differ greatly in their performance, even if they appear outwardly identical. Opting for replacement parts that are made specifically for the industrial fan in question ensures the parts will be compatible. These parts are also more durable and are typically manufactured at tighter tolerances than generic parts. Additionally, the industrial fan manufacturer will be able to provide a clear idea of how frequently the OEM parts will need to be replaced. This is very helpful in preventing unexpected downtime, as it makes it possible to plan upgrades well in advance.
The best manufacturers will also offer a variety of field services to provide ongoing assistance even after the industrial fan is installed. Staff can perform inspections, realign the fan’s shaft, and calibrate the fan’s balance and vibration. They are also able to provide torque verification and inlet operational clearances.
They Are Knowledgeable and Helpful in the Industrial Fan Selection Process
Each type of industrial fan has different properties that make it better suited for certain types of applications. Choosing the best fan for a given situation is incredibly important, and an experienced industrial fan manufacturer can facilitate the decision-making process. They listen to the customer, determine the appropriate airflow requirements for the desired application, and provide expert advice and guidance to help the customer choose the best option.
There are several factors that a manufacturer may take into consideration when they are assisting in choosing a fan. For example, they will likely ask about the ambient temperature of the facility, the total airflow that the fan will need to be able to handle, and the altitude the fan will operate at. Other factors for consideration include:
They Are Committed to Manufacturing High-Quality Industrial Fans
Even a highly knowledgeable industrial fan manufacturer will not be able to provide optimal service if they are not committed to quality. The best manufacturers continually utilize the most advanced technology and perform frequent performance testing. Their teams will be managed by experienced engineers, and they will be dedicated to building strong and long-lasting relationships with their customers.
Due to the harsh environments many industrial fans experience, manufacturers must also be sure to create fans that meet the certifications and standards for every intended application. These include:
Installing an industrial ventilation system is a top priority for companies in a wide variety of fields. A good industrial ventilation system can remove air contaminants, filter out dust fumes, and bring in fresh air, which can help employees avoid sickness and heatstroke in addition to reducing the risk of fire or explosion. Due to their complexity, designing an industrial ventilation system that can filter out industry-specific contaminants while remaining reliable and corrosion-resistant can present a challenge for manufacturers and technicians in any field.
At Markair, not only do we provide the best industrial ventilation and dust collection technology, but we also offer expert applications support for power generation, water and wastewater, pulp and paper, general manufacturing, and food manufacturing facilities. Keep reading to learn more about industrial ventilation systems and their major components, why they are important, and how Markair can help solve unique ventilation problems associated with complex systems.
What Is An Industrial Ventilation System?
Industrial ventilation systems are designed to move a specific amount of air outside a facility (which is called the “exhaust”) while bringing in an equal amount of air from outside the facility (which is called the “supply” or “intake”) at a specific velocity. This process results in the removal of airborne contaminants, such as dust, ash, and chemicals, that can be hazardous to humans if inhaled.
Although all ventilation systems are designed following the same basic principles, each system is carefully custom-designed to handle the specific type of work occurring at a given workplace, as well as the rate at which specific contaminants are released. For example, facilities with low-toxicity contaminants and a minor degree of air pollution may rely on dilution ventilation, in which contaminated air is mixed with clean air to reduce the proportion of contaminants. In contrast, facilities with more toxic contaminants may use local exhaust ventilation, in which fume hoods are used to capture contaminants at their source and carry them away from workers.
Importance of Industrial Ventilation Systems
Some of the main benefits of industrial ventilation systems include:
They eliminate hazardous chemicals or materials. Inhaling dust, ash, particulate matter, or chemical fumes can cause serious health complications for workers, especially over long periods of time. Reducing the concentrations of toxic chemicals or materials in the air that employees breathe can minimize their risk of illness or harm.
They eliminate the need to use less toxic chemicals. Because some industries rely on the use of toxic chemicals and materials, an effective ventilation system can allow manufacturers to continue using them without needing to account for the fact that they can be harmful to their employees’ health and safety.
Installing ventilation is easier than changing an industrial process. Ventilation removes the need to redesign an industrial process that may work well but produce more contaminants than desired. Additionally, because ventilation helps remove dust and particles that can accumulate on machinery, it can help prolong the lifespan of expensive industrial equipment, thus allowing effective industrial processes to continue for longer amounts of time.
Installing ventilation can remove the need to change work practices. In addition to allowing efficient industrial practices to continue unabated, installing ventilation can help manufacturers save time and money by keeping employees healthy, thus reducing the amount of sick time used. Ventilation systems also keep machinery in good condition, which reduces the amount of downtime spent fixing damaged
One additional benefit of ventilation systems is that they can help control the temperature of a warehouse or factory. This temperature control can help improve workers’ health, safety, and well-being by providing them with a workplace that is cool and comfortable rather than dangerously hot or stuffy.
Parts of Ventilation Systems
To fully comprehend how an industrial ventilation system works, it is important to understand some of the main parts of common industrial ventilation systems. As stated above, most ventilation systems include an air supply system (which brings fresh air inside) and an exhaust system (which removes contaminated air). The main parts of the air supply system include the following components:
Air inlet. The air inlet represents an entry point for the clean air that is brought into the building. The size, location, and control of the air inlet must be strategically determined to provide a given building with optimal airflow (i.e., the ideal quantity of fresh air and optimal velocity).
Air filtering equipment. Air filtration equipment is used to remove contaminants from the air before it is brought indoors. These filters should be selected based on the size of particulate matter that needs to be filtered out. Filters should be regularly cleaned or replaced to ensure that air is being adequately filtered and to avoid contaminant build-up.
Heating and cooling equipment. Heating and cooling equipment ensures that the humidity and temperature of the air remain appropriate for both the facility itself as well as the work being done inside it. Maintaining the temperature of the facility is crucial for the comfort of workers as well as the optimal performance of machinery. Maintaining the facility’s humidity also prevents the formation of condensation, which can damage equipment.
Fan. Fans are used to keep air circulating as well as to direct its movement in a specific direction and at a specific velocity. The shapes of each fan blade can be customized to provide less noise, allow for faster airspeeds, or move greater volumes of air. As with air filtering equipment, fan blades must be kept clean and in good condition to ensure that they continue to provide optimal service.
Ducts. Ducts are the series of passageways through which clean air is brought into a facility. An ideal duct system should be able to carry air without depositing any of its particulate material within the ductwork while also requiring as little fan horsepower as possible and experiencing minimal loss in pressure during its movement.
Air distribution registers. An air distribution register not only allows clean, filtered air to be directed into a specific area of a facility, but it also includes a damper to control the volume of air being carried into that area. Registers also include blades that can be modified to direct air in a specific direction or to a specific location to maximize the efficacy of the ventilation system.
Industrial Ventilation Solutions from Markair
Industrial ventilation systems are important for a wide variety of industries. These systems bring fresh air into warehouses and facilities and collect, clean, and remove air that has been contaminated with chemicals, toxins, or particulate matter. Because these systems improve the breathability of the air for employees and prevent the accumulation of dust on machinery, they are integral for the health and safety of a facility’s workforce as well as its equipment.
Due to the many components that must be included in a ventilation system, designing an industrial ventilation system can be complex and challenging. At Markair, we have more than 30 years of experience in crafting elegant ventilation solutions for a variety of industry-specific needs. Contact us today to learn more about our products and services and to discuss how we can help with your unique ventilation problems.
High Pressure Blower For Saturated Air Exhaust In Energy Recovery.
Markair was asked to help make improvements to an existing energy recovery unit that takes hot process air off the brewkettle and uses that heat to create hot water. The original system created a great deal of moisture on the roof top leaving the roof slippery and unsafe. It also led to corrsosion of adjacent structures. The new design included at Twin City Model RBO Industrial Blower and Munters Mist Elimintator. The new design is working perfectly. It is the driest the roof has been in years. The new design also reduced the noise levels on the roof.
Markair designed and furnished two air pollution control systems for Zinc Thermal Spray and Silica Grinding processes for a Florida based electrical components manufacturer. The projected consisted of carefully designed air to cloth ratios for superior performance as well incorporating the latest NFPA requirements for explosive dusts. Please contact Markair with your application and we would be happy to help!
Markair was asked to help improve an existing venturi style trim system. Due the increase trim width and machine speed, duct improvements and fan performance changes were required. System is up and running as designed. Please contact Markair with your application and we would be happy to help!
Markair is please to announce that we have teamed up with AAF to represent Florida and South Georgia. We are now the exclusive representative for the Wet Collection product line. This product line includes the famous Rotoclone line of wet dust collection as well as the compact LVN, the perfect solution for metal working facilities. Please contact Markair with your application and we would be happy to help!
Markair has the expertise and solutions available for all types of marine industry ventilation projects. From 100% outside air applications on casino boats to engine room ventilation on large ships we have you covered. We understand the challenges and complexities of ship systems and limited space. We carry a full line of ABS certified products. Call us for help with your next project.
Atlantic Marine, the shipbuilder, wouldn’t gamble on just any fan product. Atlantic Marine worked with Markair, Inc. to purchase Aerovent fans, thereby eliminating delays in approval, and maintaining their design integrity in providing their customers with a quality product and on-time delivery.
In all, forty-two Aerovent Type “W” Direct Driven Vane axial
Fans were supplied for the Trump Casino vessel project.
Lay Pitman & Associates, the naval architect, uses our computer fan selection program along with the expertise of Markair engineers to specify the Aerovent equipment, to select the quietest sound levels, provide stable fan curves, and determine adjustable pitch fan blade angle settings.
For this project, fan sizes range from 18″ to 33″ diameter, powered by both single speed and two speed motors designed to meet the weatherproof requirements for IEEE 45 and USCG 259 marine-duty, below-deck service.
Aerovent’s Type “W” vane axial fan was chosen for this project based on its proven performance and reliability on several other passenger vessel projects where Aerovent marine-duty vane axial fans have been installed.
The Type “W” vane axial design provides both the engineer and ship owner a simple, yet very versatile fan for shipboard uses.
What makes the Type “W” vane axial the right fan for the job? We think there are five advantages:
Wide Performance Range: Performance requirements for the Trump Casino project varied from 1800 CFM to 20,000 CFM with up to 2″ of static pressure. Direct drive Type “W” vane axials are available from 18″ to 84″ diameter, 1200 CFM to over 200,000 CFM and up to 4″ of static pressure.
Compact Design: Fan housing lengths are usually equal to or less than the fan diameter keeping installation space to the bare minimum. The available space for mechanical equipment is always a major design consideration especially on luxury passenger vessels.
Quiet Operation: Due to the fan’s close proximity to sleeping quarters, restaurants and public areas, the allowable noise levels from the fan are very stringent. The Type “W” vane axial is known for its smooth, stable performance and quiet operation.
Manually Adjustable Fan Blades: Adjustable aluminum fan blades make it possible to alter the airflow during final balancing of the supply/ exhaust system.
Rugged Steel Housing Construction: Heavy gauge flanged housings are built for bulkhead mounting. For ease of installation, the motor leads are extended to the exterior of the fan casing for making all electrical connections.
The complete order was shipped three days ahead of schedule. In a letter from Atlantic Marine’s Mr. George Haynes to Markair, he states, “We certainly appreciate vendors who can help us meet our production schedules and furnish quality products.”
2010 is the final year for NASA’s aging space shuttle fleet. As each orbiter returns to earth from its final voyage, it is greeted by products designed and sold by Markair, Inc. and manufactured by TCF Aerovent.
Once the orbiter lands at the end of a mission, the Shuttle Landing Fleet of vehicles keep systems on the orbiter operating while it progresses through checkout stages. One of the fleet support systems is a portable air conditioning unit. TCF Aerovent supplied twenty (20) panel fans for each of three (3) of these portable air conditioning units.
The existing cooling air supply units were not performing to specifications and required new fans and coils. The fans and coils had to bolt to an existing shroud and provide substantially higher performance.
The seacoast environment required special materials and coatings for corrosion protection. Quality, performance, and delivery were very critical requirements of the specifications.
Each of the three units required sixteen (16) 30″ DDP condenser fans and four (4) 16″ DDP pre-cooling fans for a total of sixty (60) fans. The motors were severe wash down duty with stainless steel housings, shafts, and hardware. The fans were all welded aluminum construction fabricated to fit the existing shrouds. The coating was a white Ameron paint that required sand blasting, an Amerlock 400 primer and an Ameron PSX700 topcoat.
In addition to the extensive documentation and testing requirements, NASA STD-5008 required a Certified National Association of Corrosion Engineers (NACE) Inspection of all of the fans. Aerovent hired a NACE certified company out of Pompano Beach, Florida to perform the inspections and to provide the certified reports. Aerovent provided a full-time QC person to work with the NACE inspector. Together, they reviewed the specifications and inspected everything from surface preparation to measuring dry film thicknesses (DFT) on each fan. The painting and inspection process took a total of six days. The detailed report states “all work was performed in strict accordance with specifications and in a professional manner.”
For the past five years, the Aerovent units have been operating during landing and recovery of the space shuttle fleet. NASA remains very satisfied with the quality of Aerovent’s products and the units are performing to specifications.
Call Markair, Inc. and see how we can help you with your next requirment!