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Construction
Materials
Hub
Execution
Applications
KM High-Efficiency Fan
Product Specifications

High-Efficiency Energy-Saving Fans

Customized blade design based on aerodynamics for cooling towers and ACHEs. Every fan is engineered from your unit's operating data — motor power, fan RPM, water flow, and thermal duty.

View Specifications
Blade Engineering

Blade Profile Engineered per Installation

Every blade profile is designed from your tower's actual operating data — motor current, fan RPM, circulating water flow, and thermal duty. Chord, twist, and tip shape are optimized from there.

Platform Diameter Range
2 – 49 ft
Diameter is a physical constraint — you select the size that fits your fan stack. Within that, blade count and pitch schedule are engineered from your operating data to optimize for either energy reduction or airflow recovery.
Geometry
2 – 22 blades
Blade Count
FRP · CF-FRP
Blade Material
Performance
3.8 M CFM
Max Airflow
1,400 Pa
Max Pressure
Operating Envelope
81 – 3,000 RPM
Speed Range
14 – 446 °F
Temperature Range
Blade Construction

Hollow FRP Construction for Lower Weight and Longer Service Life

Hollow composite construction cuts rotating mass. The layup is engineered for thermal stability, corrosion resistance, and long service life.

Composite Section
Outcome-Led Construction
Cross-section of a hollow FRP cooling tower fan blade
30-50% Lower blade weight than comparable foam-filled construction, reducing gearbox and drivetrain load.
446°F+ High-temperature resin capability for demanding cooling tower operating environments.
What the layup is doing

This is not a decorative material stack. The coating, resin system, reinforcement layers, and hollow core are selected to protect aerodynamic performance while keeping structural loads under control.

Click each layer to expand details
01

Special Surface Coating

Surface
▼

Low-friction coating helps preserve aerodynamic smoothness and adds another layer of corrosion protection at the blade exterior.

02

Epoxy Resin System

Thermal
▼

High-temperature thermosetting resin supports structural stability in hot service and contributes to long-term dimensional consistency.

03

FRP Fiberglass Cloth

Reinforcement
▼

Multiple reinforcement layers are bonded to build stiffness, impact resistance, and the structural integrity required for large-diameter fan duty.

04

Hollow Core

Mass Reduction
▼

The hollow interior lowers rotating mass versus foam-filled alternatives, reducing mechanical load and supporting longer service life in the drivetrain.

Blade Materials

FRP for Value. CF-FRP for Higher Performance.

Most projects start with FRP. CF-FRP is the usual step-up when the client wants a higher guaranteed performance package.

Value Priority FRP / 18%
Step-up for stronger guaranteed performance
Performance Priority CF-FRP / 20%
Best Value

FRP

Fiberglass Reinforced Plastic
18 %
Guaranteed energy-saving package
Airflow Guarantee +10% ±2%
Use When
ROI and cost-performance are the main decision drivers.
Commercial Logic
The standard recommendation for most value-led industrial upgrades.
Usually the first recommendation when the client is buying payback and practical cost-performance.
Preferred Step-Up

CF-FRP

Carbon Fiber Reinforced FRP
20 %
Higher guaranteed performance package
Airflow Guarantee +12% ±2%
Use When
Higher guaranteed performance matters more than the lowest upfront cost.
Commercial Logic
The usual step-up when the client wants a stronger upgrade package.
Recommended when performance is the buying priority and the project can justify the added material cost.
Hub Assembly

Hub Material Matched to Service Conditions

The hub assembly is specified around corrosion exposure, operating temperature, and maintenance strategy. Unlike conventional fan assemblies, KM fans do not require a seal disc.

No Seal Disc Required
Site-Matched Hub Material
Typical Fan Assembly Seal Disc Configuration
Typical fan assembly with seal disc
Seal disc required in a typical assembly layout.
KM Hub Assembly Direct Hub Configuration
KM fan assembly installed in cooling tower
No seal disc required in the KM fan assembly.
Material Options

We do not treat hub material as a default catalog item. The material grade is selected to fit the operating environment and the commercial logic of the project.

GA
Economic
Galvanized Steel
Used when the project needs the most economical hub package under standard service conditions.
SS 304
General Corrosion
Stainless Steel
A practical step-up for broader corrosion resistance in industrial environments.
SS 316L
Aggressive Service
Marine Grade Stainless
Specified when corrosion exposure is more severe and added chemical resistance is needed.
LM-4/6
Lightweight
Aluminum Alloy
Considered when weight reduction or a different structural package supports the project objective.
Execution

From Factory to Field

KM does not sell fan hardware as a standalone item. Each upgrade follows a standard four-step execution process, with OEM site supervision required and complimentary before-and-after airflow measurement included as part of the project scope.

01As-Is Test
02Assemble New Fan
03Replacement
04Final Test & Adjustment
Baseline airflow measurement before fan replacement
01 Performance Test - As Is

Baseline airflow and kW are recorded before replacement.

Current operating condition is documented first, creating the reference point for the upgrade and the post-installation comparison.

Assembly of the new KM fan package before replacement
02 Assemble New Fan

The new fan package is assembled before the replacement window starts.

Blade and hub assembly is completed in advance so field replacement can move faster once the shutdown window opens.

On-site installation work inside the fan casing
03 Replacement

The existing fan is replaced with the new assembly under OEM supervision.

OEM technicians are required on site to supervise installation and carry out the initial setting of the replacement fan.

Final blade-angle adjustment during post-installation verification
04 Performance Test & Final Adjustment

Post-installation airflow is checked and the final setting is adjusted.

KM includes complimentary before-and-after airflow measurement as part of project execution, then fine-tunes blade setting around actual tower conditions and the client's performance target.

Complimentary Service Before / After Airflow Measurement Final Adjustment
KM Execution Difference Testing and verification are included, not treated as an extra paid add-on. Before-and-after field airflow measurement is part of how KM closes the loop between baseline condition, replacement work, and the final operating setting.
Applications

Best-Fit Industrial Applications

This upgrade model fits best where cooling tower duty, fan power, airflow recovery, and site-specific execution all need to be evaluated together, not treated as separate decisions.

Where the model fits best

Not a generic fan list. These are the industrial situations where the KM upgrade approach creates the most value.

The strongest fit is where the customer is not simply buying replacement hardware, but a site-specific solution tied to energy, airflow, thermal performance, and execution discipline.

Cooling Tower Retrofit Energy Reduction Airflow Recovery OEM Site Support Before / After Verification
Refinery & Petrochemical High Fit

Cooling tower upgrades where thermal margin and operating cost both matter.

Well suited to refinery and petrochemical sites where summer performance, plant loading, and energy cost make airflow improvement commercially meaningful.

Typical Driver
Reduce fan power or recover airflow without major motor and gearbox modification.
Why It Fits
Projects often require both ROI discipline and real thermal performance improvement.
Power & Utility Sites High Fit

Large industrial cooling cells where reliability and maintenance windows are critical.

Appropriate for power and utility applications where replacement scope has to respect planned outage windows and long-term operating reliability.

Typical Driver
Upgrade fan performance while protecting driveline reliability and execution schedule.
Why It Fits
Measured verification and OEM supervision support higher-confidence project closeout.
Chemical & Process Plants Site-Specific

Applications where airflow, pressure, corrosion, and installation constraints all interact.

Strong fit for process environments where blade material, hub material, and operating point all need to be selected around actual site duty.

Typical Driver
Balance airflow improvement, corrosion resistance, and mechanical loading in one upgrade package.
Why It Fits
This is where generic replacement fans usually fail to reflect the real operating envelope.
Commercial Buildings & District HVAC Value Led

Large-scale comfort cooling where energy use, airflow, and system stability still need disciplined retrofit execution.

Applicable to airports, hospitals, universities, office complexes, and other large commercial facilities with substantial cooling tower and HVAC demand.

Typical Driver
Reduce fan energy use and recover airflow in large HVAC cooling systems without turning the project into a major plant modification.
Why It Fits
This model suits owners and facility teams that want measurable operating improvement, controlled installation, and before-and-after verification.

Need a Custom Solution?
Let's Engineer It Together.

Every fan is engineered from your tower's operating data. Send us your fan diameter, motor power, fan RPM, and water flow — we'll return an engineered recommendation.

Request a Custom Design