Aerotech Fans
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Aerotech Fans
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Engineering answers to the most common questions about industrial ventilation, air handling, and pollution control systems.
A blocked rotary airlock is usually caused by bridging of oversized materials or severe moisture coagulation in the hopper. The system must be locked out, and the access port opened to manually clear the shear-point. Never use compressed air to blow out a jammed rotary valve due to deflagration risks.
Unlike standard ducted ventilation fans which are measured in volumetric flow (CFM or CMH), the performance of an impulse jet fan is measured strictly by its aerodynamic thrust output, rated in Newtons (N), which dictates its ability to entrain and push surrounding ambient air.
For highly abrasive airstreams containing cement clinker or boiler fly ash, impellers must be fabricated from abrasion-resistant alloys like Hardox 400/500 steel, or heavily coated with tungsten carbide, to prevent rapid blade erosion and fatal fan imbalance.
The cooling capacity of an industrial air washer is mathematically limited by the ambient wet-bulb depression (the difference between the dry-bulb and wet-bulb temperatures). The system can cool the air close to the wet-bulb temperature, but it can never physically drop below it.
An IDEC unit consumes approximately 1.5 to 2.0 gallons of water per hour for every 1,000 CFM of airflow, depending on the ambient wet-bulb depression. While they consume water, the immense savings in mechanical refrigeration electricity (PUE reduction) makes them highly cost-effective.
A washdown-duty roof extractor is engineered for food and beverage plants requiring aggressive daily sanitation. It features IP69K-rated encapsulated motors and 316L stainless steel, crevice-free housings to withstand high-pressure, high-temperature chemical hosing without harboring bacteria.
Yes, high-energy venturi wet scrubbers are capable of capturing sub-micron particulate matter down to 0.3 microns with up to 99% efficiency by relying on extreme throat velocities to atomize the scrubbing liquid, creating violent collisions with the dust.
Certified commercial smoke spill fans are engineered with Class H motor insulation to operate continuously for either 2 hours at 250°C, or 2 hours at 400°C, depending on the specific local fire-code compliance and building life-safety requirements.
For extracting highly corrosive acids like hydrochloric or sulfuric acid, Fiberglass Reinforced Plastic (FRP) offers superior chemical resistance and lifecycle longevity compared to 316L Stainless Steel, which can still succumb to chloride pitting under extreme concentrations.
Electronically Commutated (EC) motors are brushless DC motors that maintain peak electrical efficiency across their entire variable speed range. They consume up to 50% less power than traditional AC motors and operate with drastically lower acoustic noise, making them ideal for commercial FCUs.
Two-Stage Indirect/Direct Evaporative Cooling (IDEC) uses a sensible heat exchanger in the first stage to drastically cool the recirculated air without adding any moisture. The direct evaporative stage only engages outside the data center envelope, preventing internal humidity spikes.
Yes, VFDs are highly recommended for direct-drive centrifugal blowers. However, you must ensure the motor is Inverter-Duty Rated (typically Class F or H insulation) to withstand the voltage spikes and harmonic heating caused by the VFD's pulse-width modulation.
