Author: Neal Raker

Targeting Scope 2 Emissions: How Compressed Air Optimization Aligns with Corporate ESG Goals

Published on by Neal RakerLeave a comment

When facility managers and corporate sustainability directors map out strategies to hit net-zero targets, the conversation usually turns quickly to high-ticket items: solar installations, HVAC overhauls, or fleet electrification.

However, there’s an immediate, high-impact opportunity already sitting on your plant floor—one that is frequently overlooked during corporate ESG audits.

It’s your compressed air system.

Often dubbed the “fourth utility,” compressed air is one of the most energy-intensive resources in an industrial plant. On average, it takes roughly 8 horsepower of electrical input at the compressor to produce just 1 horsepower of useful, compressed air output. Because compressed air is so costly to generate, every cubic foot wasted directly drives up your facility’s Scope 2 greenhouse gas (GHG) emissions—the indirect emissions generated from purchased electricity.

At EXAIR, our Application Engineers regularly work with teams looking to reduce compressed air waste. By shifting the focus from simple cost-of-operation to carbon footprint reduction, engineering teams can present immediate, measurable retrofits that satisfy both maintenance requirements and corporate sustainability mandates.

The True Cost of Open Blow offs

One of the largest contributors to unnecessary energy consumption is the use of open copper tubes, pipe nipples, or drilled holes for blow-off, cooling, and part ejection.

While an open 1/4″ copper tube might seem harmless, running it continuously at 80 PSIG can consume roughly 33 SCFM of compressed air. To supply that single point of use, your air compressor requires around 7.3 kW of power. Assuming standard operating hours and average grid emissions, that single open pipe can easily generate several tons of avoidable CO₂ equivalent (CO₂e) emissions every year.

Replacing open blow offs with engineered air nozzles—such as EXAIR Super Air Nozzles—uses optimal entrainment ratios to draw in ambient air while restricting compressed air consumption. In typical applications, retrofitting open blow offs drops air consumption by 50% to 70% while maintaining or improving force and airflow, delivering an immediate drop in compressor power draw and its associated carbon footprint.

Intelligent Thermal Management vs. Continuous Waste

Another critical area for Scope 2 reduction is electrical enclosure cooling. Industrial control panels generate internal heat that must be dissipated to protect sensitive electronics, PLCs, and variable frequency drives (VFDs).

Standard methods often fall short:

  • Fans pull contaminated, hot ambient air directly through the panel, clogging components.
  • Refrigerant Air Conditioners rely on chemical refrigerants, mechanical compressors, and filter maintenance that frequently fail in dirty or extreme ambient environments.

Vortex tube technology, utilized in EXAIR Cabinet Cooler Systems, provides a reliable, maintenance-free alternative with no moving parts or chemical refrigerants. However, running any cooling system continuously when it isn’t needed wastes air and energy.

To align panel cooling with energy reduction targets, thermal management should be on demand:

  1. Thermostatic Solenoid Control: By pairing a Cabinet Cooler with an adjustable thermostat set to 95°F(35°C), the system only draws compressed air when the panel interior hits critical temperatures, turning off automatically once cooled.
  2. Electronic Temperature Control (ETC): For critical panels or tight ambient bands, digital temperature control keeps air consumption strictly tied to real-time heat loads.

By switching from continuous operation to thermostatic control, plants typically cut compressed air usage on panel cooling by 80% or more, directly lowering kilowatt-hour (kWh) demand on the facility supply.

Mapping Compressed Air Retrofits to Corporate ESG Metrics

When proposing plant upgrades to corporate management or sustainability officers, presenting the business case in terms of carbon reduction alongside monetary savings dramatically accelerates project approvals.

Calculating your reduction is straightforward:

For example, retrofitting a line of five open blow-off pipes with engineered nozzles and installing thermostatic controls on two panel coolers across a 24/7 manufacturing line can save tens of thousands of kWh annually. Depending on your regional energy grid’s emission factors, that simple conversion can eliminate tens of thousands of pounds of CO₂ from your facility’s annual reportable footprint.

Getting Started

Optimizing compressed air isn’t just about reducing operating noise or extending compressor life, it is one of the fastest, most cost-effective avenues to achieve tangible Scope 2 energy reductions across your plant.

If you are currently evaluating your plant’s compressed air efficiency or need help calculating the potential kWh and emissions savings for an upcoming sustainability proposal, we are here to help.

Reach out to an EXAIR Application Engineer by phone, email, or live chat, and we can help walk you through the math for your specific applications.

Neal Raker, Application Engineering Manager
nealraker@exair.com

Eliminating Heat Creep and Sagging in Industrial 3D Printing

Published on by Neal RakerLeave a comment

When dealing with industrial additive manufacturing, precision is everything. Engineers routinely push the boundaries of 3D printing by utilizing high-performance, flexible polymers like TPU or specialized thin-walled blends. However, these advanced materials come with a strict environmental cost: they require rapid, precise cooling the moment they leave the heated nozzle to instantly lock their geometric shape.

If your facility struggles with summer temperature spikes, relying on standard equipment fans can lead to costly print failures. Here is how one facility eliminated the headache of ambient heat creep using simple, compressed-air technology.

The Challenge: The Summer Meltdown in Advanced Prototyping

An engineering team was tasked with printing a batch of intricate components using a heat-sensitive, flexible polymer. The project required tight tolerances and flawless execution on complex overhangs.

The challenge arose during the peak of summer. The main facility floor was averaging 88°F (31°C), and the ambient temperature inside the unconditioned additive manufacturing lab hovered right around 85°F.

The Point of Failure

The 3D printer’s stock, built-in plastic cooling fans were running at maximum capacity. However, because these fans rely entirely on drawing in the hot, humid ambient room air, they simply could not lower the polymer’s temperature fast enough.

During an extended 14-hour print cycle, disaster struck. On the fine overhangs and delicate “bridge” segments of the prototype, the hot plastic began to droop and sag before it could solidify. The next morning, operators found a pile of warped, unusable plastic “spaghetti”—resulting in wasted specialty filament and a missed production deadline.

The Flawed Traditional Fixes

The engineering team considered several traditional fixes, but each introduced new operational bottlenecks:

  • Lowering the extrusion temperature: This caused poor layer adhesion, weakened the structural integrity of the part, and threatened to clog the printer nozzle.
  • Adding larger electric fans: This simply circulated more warm, humid air and created turbulent drafts that caused the base layers to warp and lift from the print bed.
  • Installing a dedicated HVAC unit: This was dismissed as too costly, power-hungry, and time-consuming for a single prototyping workstation.

The Solution: EXAIR Adjustable Spot Cooler

The team decided to pivot and repurpose an EXAIR Adjustable Spot Cooler from the shop floor.

Using the unit’s heavy-duty swivel magnetic base, they snapped the cooler directly onto the metal frame of the 3D printer enclosure. They routed the flexible cold air hose through a side access panel and directed it precisely at the print area just below the moving nozzle.

Instead of blowing ambient 85°F room air onto the build, the operators were able to dial in a crisp, dry stream of 20°F (-7°C) air to perfectly freeze the plastic layer by layer.

What Makes the Spot Cooler Truly “Adjustable”?

While standard industrial vortex tubes require a screwdriver to manually adjust the internal “cold fraction” valve, the EXAIR Adjustable Spot Cooler is specifically designed for rapid, on-the-fly customization via two mechanical layers of adjustability:

  1. The Temperature Control Knob: Operators don’t need tools to alter performance. By turning the built-in external knob, you adjust the internal temperature control valve. This regulates exactly how much hot exhaust is bled off, allowing you to fine-tune precise temperature settings ranging from room temperature all the way down to -30°F (-34°C).
  2. Interchangeable Generators: Different polymers require different air velocities. To change the overall cooling power, the system includes three interchangeable internal generators rated at flows of 15, 25, and 30 SCFM. Swapping these out allows operators to scale the volume of cold airflow up or down without losing the sub-freezing temperatures needed for rapid material setting.

The Result

By fine-tuning the knob to a steady 20°F, the sub-freezing air instantly solidified the heat-sensitive polymer layers the millisecond they were extruded. This completely eliminated the drooping on complex overhangs and bridges.

Because the Spot Cooler utilizes EXAIR Vortex Tube technology, it features no moving parts, uses no electricity, and requires no chemical refrigerants. It ran continuously and reliably for the remainder of the 14-hour print cycle. The resulting parts were geometrically perfect and structurally sound, prompting the facility to permanently outfit their advanced printing workstations with dedicated Spot Coolers.

Why Vortex Tubes Outperform Electric Fans in Additive Manufacturing

To understand why this solution works so well, it helps to look at the physics of how heat is transferred during the print process:

A standard electric fan can only cool an object down to the temperature of the room it is in. When the room is hot, the fan is just moving hot air.

Conversely, an EXAIR Spot Cooler converts a standard supply of compressed air into two streams — one hot and one cold. The cold stream is dropped dramatically below ambient levels and focused through a flexible hose. This extreme temperature differential causes rapid heat transfer, freezing the plastic in place before gravity can warp it. Furthermore, because the air is completely dry, it introduces zero moisture or condensation onto the print bed, protecting the material integrity of hygroscopic polymers.

Take Control of Your Production Environment

Don’t let seasonal facility temperatures dictate the quality of your manufacturing output. Whether you are cooling molded plastics, machining metals, or perfecting high-tolerance 3D prints, EXAIR has a zero-maintenance spot cooling solution tailored to your layout.

If you are ready to eliminate warping, heat creep, and downtime in your facility, contact an EXAIR Application Engineer today to find the perfect system for your application.

Neal Raker, Application Engineering Manager

nealraker@exair.com

The Value of Precision

Published on by Neal RakerLeave a comment

Why EXAIR Delivers More Than “Cheap” Alternatives Ever Can

The Overlooked Opportunity in Compressed Air Efficiency

In the compressed air industry, most efficiency initiatives focus on the production side of the system. Significant resources are invested in improving compressor efficiency, upgrading controls, managing pressure drops, and recovering heat. At the same time, leak detection and repair programs have rightly gained momentum as a powerful way to eliminate waste.

These efforts are essential—and they should absolutely continue.

However, there is a third major opportunity for efficiency that is frequently overlooked:
the products used at the point of use.

In many facilities, compressed air is consumed by open pipes, improvised blow-offs, improperly sized nozzles, or low-cost devices that were never engineered for efficiency. Some compressed air advisors focus exclusively on eliminating compressed air applications entirely. While that approach has its place, it ignores an important reality:

Compressed air is an extremely valuable, flexible, and effective utility when it is used correctly.

The real opportunity is not just to produce compressed air more efficiently or stop leaks—it is to use compressed air more intelligently where it actually does the work.

This is where engineered compressed air products come into play.

Manufacturers like EXAIR demonstrate that compressed air does not have to be inherently wasteful. Through precision engineering, optimized air entrainment, and application‑specific design, EXAIR products dramatically reduce air consumption while improving performance, safety, and reliability.

The result is a smarter compressed air strategy—one that recognizes that efficient point‑of‑use products are just as important as efficient compressors and proactive leak management.

Precision That Pays You Back

When evaluating compressed air products, it’s easy to focus on purchase price alone. But in real-world industrial environments, the actual cost isn’t what you pay upfront, it’s what you pay to operate, maintain, and replace that product over time.

That’s where EXAIR stands apart.

EXAIR products are engineered to deliver measurable energy savings, safer operation, and long-term reliability, helping customers lower operating costs while improving productivity and compliance.

Save Energy. Reduce Operating Costs.

Compressed air is one of the most expensive utilities in any plant. Even small inefficiencies at the point of use can result in thousands of dollars in wasted electricity each year.

What makes EXAIR different:
EXAIR air nozzles and air amplifiers are precision‑engineered to maximize air entrainment while minimizing compressed air consumption. Compared to open pipes or low‑cost alternatives with crude internal geometry, EXAIR products can typically reduce air usage by 30–50%.

What this means for the customer:

  • Lower energy costs
  • Reduced compressor run time and maintenance
  • Fast, measurable ROI—often in months

A nozzle that costs less today may silently waste far more tomorrow.

Built‑In Safety. Built‑In Compliance.

Safety is not optional—and non‑compliant compressed air devices introduce risk for both employees and the organization.

What makes EXAIR different:
EXAIR products are engineered to meet OSHA requirements for noise levels and dead‑end pressure, reducing the risk of injury and eliminating compliance concerns that often accompany low‑cost imports.

What this means for our customers:

  • Lower workplace risk
  • Easier EHS audits
  • Confidence that safety has been designed into the solution—not added later

With EXAIR, safety is part of the product, not a compromise.

Reliability That Protects Uptime

Downtime is expensive. Failures caused by clogging, worn components, or inconsistent manufacturing often show up at the worst possible moment.

What makes EXAIR different:
Many EXAIR products—including Vortex Tubes and Air Knives—are designed with no moving parts. No bearings to fail. No internal mechanisms to wear out. Just consistent, repeatable performance.

What this means for the customer:

  • Maximum uptime
  • Minimal maintenance
  • Long service life, even in harsh environments

Install it once. Depend on it for years.

More Than a Product—An Engineering Partner

Low-cost compressed air products often come with little more than a tracking number. When performance issues arise, the support ends at delivery.

What makes EXAIR different:
Every EXAIR solution is supported by experienced Application Engineers who help ensure the product is properly selected, sized, and applied.

What this means for our customers:

  • Faster implementation
  • Optimized performance
  • Reduced trial‑and‑error costs

You are not just buying a compressed air product, you are gaining our expertise in solving the very problems that plague manufacturing processes.

The EXAIR Value Proposition

When customers choose EXAIR, they gain:

  • Lower energy consumption
  • Improved safety and compliance
  • Proven durability and reliability
  • Expert application support

All of this delivers the lowest total cost of ownership—not just the lowest purchase price.

Before choosing a cheaper alternative, the real question is:

  • What is the cost of wasted compressed air over time?
  • What is the cost of downtime?
  • What is the risk of non‑compliant equipment?

EXAIR is precision engineering that pays for itself.

Neal Raker, Application Engineering Manager
nealraker@exair.com

Keeping Control Panels Cool in Malaysia’s Palm Oil Industry

Published on by Neal RakerLeave a comment

As the weather warms up, we start hearing from more customers who are dealing with hot, humid plant environments. Heat is often the first concern when it comes to protecting an electrical control panel, but in many facilities, humidity is just as much of a problem. Moisture inside an enclosure can lead to corrosion, nuisance faults, and shorter component life, especially when sensitive electronics are involved.

A recent application came from a customer building a control panel for an end user in Malaysia. That location immediately stood out because Malaysia’s climate is hot and humid year-round, and the end user was in the palm oil processing industry. Palm oil is big business in Malaysia. The country is one of the world’s leading producers and exporters, and the industry supports a large network of plantations, mills, refineries, food ingredient suppliers, and downstream manufacturers.

It is also an important piece of the broader food and beverage industry. Palm oil is widely used as an edible oil and as a functional ingredient in products such as baked goods, snacks, confectionery, margarine, shortenings, instant noodles, and other processed foods. For food manufacturers, it offers consistency, shelf stability, versatility, and availability at scale. So, when a palm oil processing plant has production equipment or control panels go down, the impact can reach well beyond one facility. It can affect ingredient supply, processing schedules, and the larger food production chain.

That is why uptime matters so much in this kind of application. Palm oil plants are built around continuous production, and the surrounding conditions can be tough on electrical enclosures. In this case, the customer needed a NEMA 12 Cabinet Cooler System capable of providing approximately 1000 Btu/hr. of cooling power. To provide some extra capacity and keep the system from being undersized, I recommended a 1700 Btu/hr. Cabinet Cooler System with 24 VDC thermostat control. The 24 VDC option also made sense because the customer could power the thermostat from inside the panel without having to run additional electrical circuits. The thermostat would control the temperature to within 2 degrees of its 95F setpoint. Electronics can live comfortably at a bit higher temperature than can humans. This helps save energy to cool the application without overdoing it.

Another benefit that really helped this application was the constant supply of clean, cool, dry air into the enclosure. Instead of pulling in the same hot, humid plant air that surrounded the cabinet, the Cabinet Cooler System purged the enclosure with compressed air that had already been treated at the production point and then filtered again at the panel with the included 5 micron compressed air filter/separator. That helped bring the cabinet environment down from the typical tropical humidity range of 80–90% RH to something closer to the 40–50% RH range inside the enclosure.

Before making the change, the end user had been using small DC fans to pull outside air through the panel. In a Malaysian palm oil processing environment, which meant pulling hot, humid air directly into the enclosure. The fans may have moved air, but they did not solve the heat problem, and they contributed to the moisture problem. By switching to the Cabinet Cooler System, the customer was able to address both concerns at the same time: lower internal temperature and lower humidity. Since the system has no moving parts to wear out, it also keeps maintenance simple, which is always a welcome advantage in a production environment where downtime can get expensive fast.

This was a good example of how a relatively simple enclosure cooling solution can make a big difference. In industries closely tied to food and beverage production, reliability is not just about protecting one panel. It is about keeping a process moving, protecting product flow, and helping a plant stay on schedule.

Neal Raker, Application Engineering Manager
nealraker@exair.com