Tag: Air Amplifier

Extend Refractory Life with an Unusual (and Practical) Cooling Fix

Published on by Neal RakerLeave a comment

How an EXAIR Super Air Amplifier can reduce hot-spot damage and save thousands in unplanned downtime.

Hot spots on refractory walls are common in high-heat operations, but premature refractory failure need not be. If you can quickly pull heat out of a problem area (without touching the lining), you can reduce thermal stress and keep your furnace running longer.

Figure 1. Targeted, non-contact cooling helps stabilize refractory hot spots before they become cracks or spalls.

The problem: localized hot spots

During heat cycles, refractory walls rarely heat perfectly evenly. Burner impingement, scale buildup, airflow changes, and normal process variation can create concentrated hot spots. Left unchecked, these areas run hotter than the surrounding area, accelerating wear that shows up as cracking, spalling, and ultimately downtime.

The solution: EXAIR Super Air Amplifier

A Super Air Amplifier converts a small amount of compressed air into a high-velocity, high-volume stream of ambient air. Aimed at a hot spot, the airflow impinges on the outside surface of the refractory to carry heat away quickly without contacting or mechanically disturbing the lining.

Because cooling is targeted and non-contact, it can reduce peak temperatures and thermal gradients in critical areas. The result: less thermal stress, slower localized erosion, and a better chance of getting maximum life from your refractory lining.

The payoff: more uptime and real savings

Even small gains in living life matter. Extending a campaign by days, or even hours, can help you delay an early reline, reduce emergency maintenance, and keep the furnace in production when it counts.

In many operations, that additional runtime translates into thousands of dollars savedthrough fewer relines, less lost production, and more predictable maintenance planning.

A simple cooling upgrade with a significant impact.
The EXAIR Super Air Amplifier is a dependable, low-maintenance solution for addressing refractory hot spots, protecting your furnace investment, and improving your bottom line. If hot spots are shortening your lining life, it’s worth considering as part of your standard operating response.

Neal Raker, Application Engineering Manager
nealraker@exair.com

Spot Cooling Solutions for Semiconductor Manufacturing: How EXAIR Vortex Tubes Improve Process Reliability

Published on by Jordan T ShouseLeave a comment

Semiconductor manufacturing is one of the most demanding industrial environments in the world. From wafer fabrication and lithography to inspection, packaging, and testing, process stability often depends on maintaining precise temperature control. Even minor temperature fluctuations can impact yield, equipment performance, and product quality.

As semiconductor facilities continue to increase throughput and process complexity, engineers are constantly evaluating cooling solutions that improve reliability while minimizing maintenance requirements. One technology that has gained traction in targeted cooling applications is the vortex tube.

What Is a Vortex Tube?

A vortex tube is a compact device that converts compressed air into two separate air streams—one hot and one cold—without the use of electricity, refrigerants, or moving parts.

EXAIR vortex tubes utilize this principle to generate cold air temperatures as much as 100°F (56°C) below the inlet compressed air temperature. The resulting cold air stream can be directed precisely where cooling is required, providing an efficient solution for localized heat management.

Because vortex tubes contain no moving components, they offer exceptional reliability in environments where maintenance access is limited or contamination concerns are critical.

Semiconductor Applications for Vortex Tube Cooling

Cooling Vision and Inspection Systems

Automated optical inspection systems rely on cameras, sensors, and electronic components that can generate heat during continuous operation. Excessive temperatures may affect measurement accuracy or shorten component life.

Vortex tubes provide a simple method of delivering clean, cold air directly to sensitive electronics, helping maintain stable operating conditions without introducing liquid cooling systems.

Wafer Handling and Processing Equipment

Many wafer handling systems contain motors, drives, sensors, and control electronics operating in confined spaces. Localized heat buildup can lead to premature component wear and unexpected downtime.

Targeted vortex tube cooling can help remove heat from critical areas while avoiding the complexity associated with chilled water loops or mechanical refrigeration systems.

Cooling During Semiconductor Testing

Testing equipment often runs continuously and generates substantial heat loads. Maintaining consistent operating temperatures helps ensure repeatable test results and improves equipment reliability.

Vortex tubes can be deployed to cool fixtures, instrumentation, and electronic assemblies where traditional cooling methods may be difficult to implement.

Packaging and Assembly Operations

Semiconductor packaging processes frequently utilize adhesives, coatings, and thermal interface materials that can be sensitive to temperature variations. Cold air generated by a vortex tube can assist with process stabilization, spot cooling, and accelerated cooling between production steps.

Advantages of EXAIR Vortex Tubes

No Moving Parts, Clean Operation, Compact Installation, Instant Cooling, Reliable Operation in Harsh Environments

The simplicity of vortex tube technology makes it particularly attractive for applications involving vibration, dust, or challenging operating conditions where conventional cooling equipment may struggle.

The semiconductor industry depends on precision, repeatability, and uptime. EXAIR vortex tubes provide a straightforward and dependable method for localized cooling without the complexity of mechanical refrigeration. For engineers seeking a low-maintenance solution to cool electronics, sensors, fixtures, and process equipment, vortex tube technology remains a proven option for improving thermal control in critical semiconductor manufacturing operations.

Jordan Shouse
Application Engineer
E: JordanShouse@exair.com
O: (513) 671‑3322
F: (513) 671‑3363
A: 11510 Goldcoast Dr Cincinnati OH 45249
www.exair.com

Find time on my calendar by scheduling a meeting here.

People of Interest: Henri Coanda 1886 – 1972

Published on by John BallLeave a comment
In each of these EXAIR engineered compressed air products, the primary air stream following the curved surface causes entrainment. And efficiency.

Being in the compressed air industry for over 35 years, you come across many interesting people from the past that have created laws that we are still using today.  Henri Coanda is one of those people. 

Henri Coanda was a prominent Romanian inventor and aerodynamics pioneer.   In 1910, Henri and his Italian counterpart, Gianni Caproni, began a partnership to construct an experimental aircraft which was later called the Coanda-1910. The Coanda-1910 was unlike any other aircraft of its time as it had no propeller; instead, it sported an oddly shaped front end with built-in rotary blades arranged in a swirl pattern. These blades were driven by an internal turbine screw that would suck air in through the turbine while exhausting the gases out of the rear, propelling the plane forward. This initial jet engine was quite impressive for the time, but sadly nobody believed it would ever fly, and it is believed that it never did achieve flight. Coanda is not credited with the invention of the jet engine, but his technology spurred the future of aviation into the future.

Henri spent his time developing the turbo-propeller drive system of his 1910 Biplane during World War 2.  After it ended, Henri began furthering his research on the Coanda Effect which would become the basis for several investigations into entrained and augmented flow of fluids.  It states that a fluid adheres to and follows a contour which creates low pressure.  Later, in 1969, Henri would spend the last of his days in Romania serving as Director of the Institute for Scientific and Technical Creation.  Henri died on November 25, 1972, in his hometown of Bucharest.

Henri Coanda passed away on November 25, 1972, in his hometown of Bucharest.  Here at EXAIR, we have used the Coanda Effect to apply it to several of our products.  This helps to amplify total airflow by using less compressed air.  Thus, saving you money.  The most notable products are our Air Amplifiers, Air Wipes, Standard Air Knives, and Full-Flow Air Knives, which are some of the most efficient products of their kind.  If you would like to speak more about how EXAIR can benefit your pneumatic system, one of our Application Engineers can help you determine the best solution.

John Ball
Application Engineer
Email: johnball@exair.com
Twitter: @EXAIR_jb

Step 3: Upgrade Your Blow off, Cooling, and Drying Operations

Published on by Al WooffittLeave a comment

In the world of manufacturing, compressed air is often called the “fourth utility.” It’s essential, but it’s also expensive to produce. If you’re following the Six Steps to Optimize Your Compressed Air System, Step 3 is where you stop the bleeding.

Step 3, dear reader, is the subject of today’s blog.

Upgrading your blow-off, cooling, and drying operations from “homegrown” solutions to engineered products is one of the fastest ways to slash energy costs and improve plant safety.

The Problem with “In-House” Solutions

Many plants rely on makeshift blow-off devices: crimped copper tubes, pipes with drilled holes, or basic air nozzles found at a hardware store. While they seem “free” or cheap, they are incredibly inefficient.

  • High Air Consumption: They lack the physics to move air efficiently, requiring massive volumes of compressed air to do the job.
  • Dangerous Noise Levels: Drilled pipes produce a high-pitched shear that often exceeds OSHA noise exposure limits.
  • Safety Hazards: If a pipe or open tube is dead-ended against skin, it can lead to serious injury or air embolism.

The Engineered Solution: EXAIR Technology

This is where EXAIR engineered compressed air products change the game. Unlike a standard pipe, EXAIR products use the Coanda effect to “entrain” the surrounding room air. For every part of compressed air used, an EXAIR nozzle or air knife pulls in 30 to 40 parts of “free” ambient air.

EXAIR Intelligent Compressed Air Products such as (left to right) the Air Wipe, Super Air Knife, Super Air Nozzle, and Air Amplifier are engineered to entrain enormous amounts of air from the surrounding environment.

If you are drying a conveyor belt or cleaning wide sheets of material, a drilled pipe is a money pit. An EXAIR Super Air Knife provides a high-velocity, uniform sheet of air across the entire surface. It’s quiet (around 69 dBA for most applications) and reduces air consumption by up to 80% compared to open headers.

For targeted blow-off or part ejection, Super Air Nozzles replace open tubes and cheap nozzles. They provide a forceful, concentrated stream of air while meeting OSHA requirements for skin pressure and noise. You get more “push” for significantly less “psi.”

Step 3 isn’t just about blowing air; it’s about optimizing how air manages temperature and waste. From Vortex Tubes that provide spot cooling without refrigerants to Air Amplifiers for smoke and fume removal, these tools ensure you aren’t overworking your compressors for simple tasks.

The Bottom Line

Upgrading to EXAIR engineered products isn’t just a maintenance fix; it’s a financial strategy. Most facilities see a return on investment (ROI) in just weeks through reduced energy bills.

By replacing inefficient, loud, and dangerous blow-off methods with engineered solutions, you’re not just optimizing your compressed air—you’re creating a quieter, safer, and more profitable shop floor.

Al Wooffitt
Application Engineer

Send me an Email
Find us on the Web
Like us on Facebook
Twitter: @EXAIR_AW