Category: Sustainability

Henri Coanda and his Effect on Compressed Air

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Henri defined the Coanda Effect – the tendency of a jet of fluid emerging from an orifice to follow an adjacent flat or curved surface and to entrain fluid from the surroundings so that a region of lower pressure develops.

Compressed air flows through the inlet (1) to the Full Flow (left) or Standard (right) Air Knife, into the internal plenum. It then discharges through a thin gap (2), adhering to the Coanda profile (3) which directs it down the face of the Air Knife. The precision engineered & finished surfaces optimize entrainment of air (4) from the surrounding environment.

Henri-Marie Coanda (1885-1972) discovered the Coanda Effect in1930. He observed that a stream of air (fluid) emerging from a nozzle tends to follow a nearby curved surface, if the curvature of the surface or angle the surface makes with the stream is not too sharp. For example, if a stream of fluid is flowing along a solid surface which is curved slightly from the stream, the fluid will tend to follow the surface.

A number EXAIR products are designed to utilize the Coanda Effect and aid their performance. In some products, the Coanda Effect aids to create an amplification area where additional ambient air is drawn into the total airflow to increase total volume of air upon a target. This creates a more efficient and effective product. Also, since not as much compressed air is required, the noise levels decrease for products like EXAIR’s air knives, air nozzles, air jets and air amplifiers. EXAIR has been successful with positive impact for compressed air energy savings and noise reductions helping us meet or exceed OSHA Standard 29 CFR-1910.95 9(a) Maximum Allowable Noise Exposure.

Please contact EXAIR with regards to our Intelligent Compressed Air Products. We can help you with your next cooling, blow-off, drying or any compressed air needs.

Eric Kuhnash
Application Engineer
Email: erickuhnash@exair.com
Twitter: @EXAIR_EK

1- Spoon Coanda image- https://creativecommons.org/licenses/by-sa/2.5/deed.en

EXAIR High Temperature Cabinet Cooler System

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Inside, outdoors, high temperature, dirt/dust/humidity, corrosive and classified environments are no problem for EXAIR Cabinet Cooler Systems

EXAIR Cabinet Cooler® Systems will help eliminate downtime due to heat, dirt and moisture. Our Cabinet Cooler® Systems are UL listed to maintain NEMA 4, 4X and NEMA 12 integrity. All high temperature cabinet coolers are UL listed and CE compliant. Our Cabinet Coolers are a reliable way to cool and purge electrical control panels from the use of vortex tube technology, which creates cold air from normal compressed air.

One of our specialized applications are for Cabinet Cooler® Systems in areas with hotter than normal ambient temperatures. Sometimes electrical cabinets are located in environments near high heat sources such as boiler rooms, furnaces, ovens or other heat sources. If the ambient temperature is above 125° F (52° C) we offer a High Temperature Cabinet Cooler systems.

EXAIR High Temperature coolers offer relief for ambient temperatures ranging from 125° – 200° F (52°C – 93°C). Our Cabinet Cooler calculator found at www.EXAIR.com will automatically determine if the High Temperature cooler is required for your specific application.

The High Temperature Cabinet Cooler systems are stock items, ready to ship and easily installed. If you have questions or need more information please contact any of our Application Engineers.

Eric Kuhnash
Application Engineer
Email: erickuhnash@exair.com
Twitter: @EXAIR_EK

Benefits of Working with EXAIR

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30 Day Guarantee

Consider EXAIR as the source of your problem solving products for the following reasons. Our Application Engineers are waiting for your call, e-mail or live chat. They have over 70 years manufacturing experience between them and have experience with an impressive number of different industries and process problems. Add our customer service staff to that mix and you will experience orders that are shipped the same or next day (orders received by 2pm EXAIR time ship same day), with a fast and accurate order confirmation. EXAIR shipped products on-time 99.8% in 2021, and we continue that into 2022.

Our website and catalog include 16 problem solving product lines and thousands of products, technical data, photos and drawings to help you with your project. When reviewing our website or catalog, chances are you will find the answers to some of your industrial/production problems. Our catalog products are stock items, so in most cases we will process and ship orders the same day! Having the capability to get our products to your facility allows you to begin familiarizing yourself with our product(s) and perform trial(s). Since we manufacture these products locally, in Cincinnati, OH, we have the ability to make custom solutions if any of our stock products do not meet your needs.

EXAIR has competitive prices but you will also see cost savings from the efficiencies you realize with our Intelligent Compressed Air Products. Reducing your SCFM usage will decrease your energy cost. Our products also come with EXAIR’s 5 year Built to Last Warranty!

EXAIR leads the way in standards compliance by making certain our products meet the standards set forth by many organizations. You will see CE, RoHS, REACH, Conflict Mineral Free and OSHA compliance are common for our products. When considering safety, our products meet or exceed OSHA Standards 29 CFR-1910.95 (a) maximum allowable noise exposure and OSHA standard CFR 1910.22 (b) harmful dead end pressure.

Please visit www.EXAIR.com or request a catalog.

Eric Kuhnash
Application Engineer
E-mail: EricKuhnash@EXAIR.com
Twitter: @EXAIR_EK

Sanitary Flange Air Conveyor Doubles Output for Coffee Bean Roaster

Published on by Tyler DanielLeave a comment

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For me there’s nothing better than a hot, fresh cup of coffee first thing in the morning. Particularly during the colder mornings like we’ve had as of late, but even in the summer sitting out on the porch sipping on a cup while the sun comes up is a great way to start the day. Just typing this first paragraph has me making my way to the break room for a cup!

We’ve talked about the life of a coffee bean and the processes that it must go through from the fields as a bean all the way through the roasting, grinding, and packaging process. At just about every stage in the production of coffee, EXAIR has a way to help. Just like craft breweries that have taken the world by storm, small-batch coffee companies are beginning to see a similar boom in their business as the market shifts away from large corporate entities and supports small or locally owned businesses.

I recently had the pleasure of speaking with one of these “craft” coffee producers. They’ve been in business for a little while, but as of late have really seen an increase in their sales. To increase production, they invested in a second roasting machine at a substantial capital investment. They’re a small company with less than 10 employees from the front-end to the back-end. While initially they thought all that was needed was to buy a second roaster, they quickly found out that they weren’t getting double the output like they had thought. The problem was that the time spent moving the bulk bags of raw beans into the hopper of the roaster was too time consuming for one person to feasibly handle. They either needed to hire a second person (another substantial investment), or they needed to find a better way of transporting the beans.

After searching online, they came across the EXAIR Line Vac. EXAIR’s Line Vacs are the ideal low-cost solution for bulk material transfer. Available with smooth, NPT threads, and sanitary flange connections, it allows you to convert ordinary pipe or hose into a powerful conveying system for parts, scrap, trim, and other bulk materials. Available in a variety of different sizes and materials, we can achieve wide range of conveyance rates.

SFLV_800sq

In this particular application, food grade materials were necessary. EXAIR’s model 161200-316 2” Sanitary Flange Line Vac allowed them to maintain a clean environment while keeping it easy to remove and clean when necessary. With the Line Vac in place, they were able to double their output as they’d desired when purchasing the new machine without having to hire another operator. A much easier, cheaper, and cost-effective solution. That Line Vac isn’t going to ask for a raise, request time off for summer vacation, or wander into the break-room to make itself a cup of coffee 😊.

If you have an application where you’re manually transferring bulk materials, give us a call. An Application Engineer will be happy to help evaluate your process and recommend a solution that’ll save you time, energy, and money!

Tyler Daniel
Application Engineer
E-mail: TylerDaniel@EXAIR.com
Twitter: @EXAIR_TD