Aerotech Fans
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AeroTech's High Volume Limit Load Blower in DIDW (Double Inlet Double Width) configuration features air entry from both sides of the blower, providing higher airflow in a compact size. The backward curved impellers are fabricated from high-grade steel, dynamically balanced for smooth vibration-free operation. The rigid welded construction from heavy-gauge steel with scroll-type casing ensures efficient air guidance.
The non-overloading characteristic of backward curved impellers inherently limits absorbed power, preventing motor overloading — a critical safety feature for large industrial systems. Available in direct drive or belt-driven configuration. Anti-corrosive powder coating or epoxy paint for enhanced durability.
Heavy-duty ball bearings and precision-machined shaft for continuous duty. Delivers up to 2,50,000 CMH at above 1200 mm w. g.
static pressure, handling temperatures up to 380°C with cooling disc. Available in MS, SS, Aluminium, and FRP. Widely used in HVAC air handling units, central AC plants, clean rooms and laboratories, industrial ventilation in factories and workshops, commercial spaces including malls, theatres, hotels, hospitals, and office complexes, and power plants and refineries for combustion air supply.
Max Airflow
Up to 2,50,000 CMH
Max Pressure
Above 1200 mm w.g.
Temp Range
Up to 380 C with cooling disc
Material
MS / SS / Aluminium / FRP
High Air Volume Handling
Suitable for large capacity airflow at low & medium static pressure
Low Noise Operation
Forward curved blades ensure quieter performance compared to backward curved designs
Compact & Space-Saving
DIDW arrangement offers double air intake in a single compact unit
Non-Overloading
Backward curved impellers inherently limit absorbed power, preventing motor overloading
HVAC & AHU
Clean Environments
Commercial
Double Inlet, Double Width (DIDW) design — air enters from both sides for higher airflow in compact size.
Backward curved impellers fabricated from high-grade steel, dynamically balanced.
Rigid welded construction from heavy-gauge steel with scroll-type casing.
Available in direct drive or belt-driven configuration.
Anti-corrosive powder coating or epoxy paint for enhanced durability.
Heavy-duty ball bearings and precision-machined shaft for continuous duty.
| Model | Air Volume (CFM) | Static Pressure (in.wg) | RPM (Max) | Motor (HP) |
|---|---|---|---|---|
| DIDW-900 | 90,000 | 700 | 1,600 | 110 |
| DIDW-1120 | 150,000 | 1000 | 1,450 | 220 |
| DIDW-1250 | 200,000 | 1500 | 1,200 | 355 |
At high altitudes, air density decreases significantly. A blower operating at 5,000 feet will move the same actual volumetric flow (ACFM) as at sea level, but it will generate far less static pressure and require less brake horsepower. The fan must be specifically derated and upsized to achieve the required standard mass flow (SCFM).
A Double Inlet Double Width (DIDW) blower should be chosen when you require massive volumetric airflow (CFM) in a clean-air environment with restricted installation space, such as an HVAC Air Handling Unit. For high-pressure or material handling, an SISW blower is required.
To ensure proper atmospheric dispersion and prevent hazardous plumes from re-entering the building's fresh air intakes, industrial exhaust stacks must maintain a minimum discharge velocity of 2,500 to 3,000 FPM. This high momentum shoots the plume high above the aerodynamic wake of the roofline.
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.
By mounting piezoelectric accelerometers on the blower bearings, IoT systems can analyze the fast Fourier transform (FFT) vibration spectrum. A spike at exactly 1x the RPM indicates fan unbalance, while spikes at high frequencies indicate microscopic bearing spalling, allowing maintenance weeks before a catastrophic failure.
