PVC Cellular Drift Eliminators
Compact multi-pass eliminator packs for HVAC cooling towers and clean industrial evaporative cooling equipment.
Cellular design
PVC material
Compact installation
Drift Eliminators
Drift Eliminators
Thermocore supplies cooling tower drift eliminators and replacement eliminator packs for crossflow cooling towers, counterflow cooling towers, closed circuit cooling towers and evaporative condensers. Our drift eliminator solutions are designed to reduce water droplet carryover, control drift loss and protect nearby equipment, buildings and working areas.
From compact PVC cellular drift eliminators to blade-type eliminators, PP high-temperature options and FRP industrial eliminators, we help engineers and maintenance teams select the right design based on airflow direction, tower structure, water temperature, chemical exposure, pressure drop and replacement dimensions.
Product Overview
Drift Eliminator Overview
Drift eliminators are internal water droplet separation components installed near the air discharge path of evaporative cooling equipment. Their purpose is to capture liquid droplets carried by airflow and return them to the water system before the air leaves the tower.
A well-designed drift eliminator should reduce droplet carryover while keeping pressure drop within the fan system design range. If the eliminator is too restrictive, clogged or incorrectly installed, airflow can decrease and cooling tower performance can suffer. If the eliminator is damaged or missing, drift loss, chemical carryover and local wetting around the tower can increase.
Product TypeCooling tower drift eliminator / droplet separator
Common TypesCellular, blade-type, crossflow, counterflow
Compatible EquipmentOpen towers, closed towers and evaporative condensers
Main FunctionCapture entrained water droplets
Selection FocusDrift control + pressure drop + material durability
Products We Supply
Drift Eliminators We Supply
This section works as the product navigation core of the page. Each product card can later link to a detailed specification page, material option, drawing or quotation form.
Blade-Type Drift Eliminators
Profile blade eliminators for industrial towers, larger air paths and maintenance-friendly replacement projects.
Blade profile
Industrial towers
Service access
Crossflow Drift Eliminators
Designed for horizontal airflow in crossflow cooling towers and side-discharge air paths.
Crossflow tower
Horizontal airflow
Air outlet side
Counterflow Drift Eliminators
Designed for upward airflow in counterflow cooling towers, closed circuit towers and evaporative condensers.
Counterflow tower
Upward airflow
Above fill / coil
PP / High-Temperature Eliminators
Material option for higher water temperature or chemical resistance requirements where standard PVC is not suitable.
PP material
Higher temperature
Chemical resistance
Replacement Drift Eliminator Packs
Customized replacement panels and packs according to existing tower dimensions, support layout and air direction.
Custom size
Retrofit
Replacement project
Basics
What Is a Drift Eliminator and How Does It Work?
A drift eliminator is a water droplet separation device installed in the air discharge path of evaporative cooling equipment after water has contacted fill media, coil surfaces or spray zones.
It uses inertial separation: air can follow the curved passages, but water droplets tend to continue forward, impact the blade or cellular surfaces, coalesce and drain back into the tower.
What Drift Eliminators Do
- Capture entrained water droplets
- Reduce drift loss from discharge air
- Return captured water to the tower
- Help control chemical carryover
- Support cleaner surrounding areas
1
Air carries small water droplets upward or sidewaysDroplets become entrained after water contacts fill, coil or spray sections.
2
Air enters the eliminator passagesThe eliminator forces the airflow to change direction several times.
3
Droplets impact the eliminator surfaceWater droplets cannot follow sharp turns as easily as air.
4
Captured droplets coalesce and drainSmall droplets combine and flow back into the tower water system.
5
Air exits with reduced liquid carryoverThe discharge air contains much less entrained liquid water.
Compatible Equipment
Compatible Equipment for Drift Eliminators
Drift eliminators are used in evaporative equipment where discharge air must release less entrained water while keeping airflow resistance within the tower design limit.
Types
Main Types of Drift Eliminators
Different evaporative cooling equipment requires different eliminator geometry. The correct design should match airflow direction, available installation space, required drift control and pressure drop limit.
Cellular Drift Eliminators
Cellular eliminators use formed sheets arranged into compact multi-pass channels. They are commonly used where compact installation and good droplet capture are required.
- Compact structure
- Multi-pass air path
- Common in package towers
- Good balance of drift control and space
Blade-Type Drift Eliminators
Blade-type eliminators use individual profiles or panels to create directional changes in airflow. They are often selected for industrial towers and maintenance-friendly applications.
- Profile blade design
- Removable panel option
- Industrial tower use
- Good service access
High-Temperature / Industrial Eliminators
High-temperature or industrial eliminators use PP, FRP or special materials for demanding water temperature, chemical exposure or heavy-duty operating environments.
- Higher temperature resistance
- Chemical resistance
- Heavy-duty structure
- Project-specific material selection
Technical Selection
Technical Selection Guide for Drift Eliminators
Drift eliminator selection should focus on droplet capture, airflow resistance, drainage direction and cleaning access. The best option depends on tower structure and operating conditions.
| Parameter | Why It Matters |
|---|---|
| Tower Type and Airflow Direction | Confirms crossflow side discharge, counterflow top discharge or evaporative equipment layout. |
| Installation Position | Matches outlet side, fan deck, spray zone or coil section clearance. |
| Panel Dimensions | Records length, width, thickness, support spacing and installation direction. |
| Pressure Drop Limit | Avoids excessive airflow resistance and fan energy penalty. |
| Water Quality and Fouling | Determines whether compact, removable or easy-clean geometry is preferred. |
| Material Environment | Guides PVC, PP or FRP by temperature, UV exposure and chemical conditions. |
Replacement & Retrofit
Drift Eliminator Replacement Guide
Drift eliminator replacement is common when old panels become brittle, clogged, broken, missing or unable to control water carryover. Replacement should confirm not only size, but also airflow direction, drainage direction and allowable pressure drop.
1
Identify tower type and airflow directionConfirm crossflow, counterflow, closed circuit tower or evaporative condenser structure.
2
Measure existing eliminator dimensionsRecord panel length, width, thickness, support spacing and installation direction.
3
Check failure reasonDetermine whether brittleness, chemical attack, clogging, deformation or poor support caused failure.
4
Match material and geometrySelect PVC, PP, FRP, cellular or blade-type design according to project conditions.
5
Verify installation and drainageEnsure captured droplets can drain back and air bypass is minimized.
When Replacement Helps
When eliminators are broken, missing, clogged, brittle, warped or no longer controlling visible droplet carryover.
When Cleaning May Be Enough
When fouling is light and the eliminator panels are structurally stable and correctly installed.
When Redesign Is Needed
When the original eliminator creates excessive pressure drop, poor drainage or does not match tower airflow direction.
Before Replacement
Drift Eliminator Checks Before Replacement
Before replacing drift eliminators, confirm whether cleaning is enough or the existing panels have lost drift-control performance.
Panel Condition
Check for broken, missing, brittle, warped or incorrectly installed eliminator panels.
Blocked Passages
Remove scale, biological growth and debris that increase pressure drop and reduce airflow.
Drainage and Airflow
Replace or redesign when panels cannot drain captured droplets or match the tower airflow direction.
Not Sure Which Drift Eliminator Is Right for Your Tower?
Send your tower type, airflow direction, existing eliminator photos, panel dimensions, support spacing, water temperature and operating environment. Our engineering team will recommend cellular, blade-type, PVC, PP, FRP or custom replacement drift eliminators.
Tower type
Airflow direction
Panel dimensions
Water temperature
Photos
FAQ
Drift Eliminators FAQ
These FAQs are written for HVAC engineers, cooling tower maintenance teams, industrial buyers and contractors who need to understand drift eliminator selection, replacement, airflow impact, materials and maintenance.
What are drift eliminators?
Drift eliminators are internal components used in cooling towers, closed circuit cooling towers and evaporative condensers to reduce the amount of water droplets carried out of the equipment by discharge air. As moist air passes through the drift eliminator, the blade or cellular passages force the air to change direction several times. Entrained water droplets impact the eliminator surface, coalesce into larger droplets and drain back into the tower instead of leaving with the air stream.
What is drift in a cooling tower?
Drift is the small quantity of circulating water droplets that becomes entrained in the discharge air and leaves the cooling tower. It is different from evaporation, because drift is liquid water carryover rather than water vapor. Drift may contain treatment chemicals, dissolved minerals or suspended matter, so reducing drift helps lower water loss, chemical loss, nearby surface wetting and environmental discharge risk.
How do drift eliminators work?
Drift eliminators work by creating directional changes in the air path. When air carrying water droplets moves through the eliminator passages, droplets with higher inertia cannot follow the sharp turns as easily as air. They hit the eliminator surfaces, merge into larger droplets and drain back into the cooling tower. The design must capture droplets effectively while keeping air pressure drop low enough for the fan system.
Why are drift eliminators important?
Drift eliminators are important because they help reduce water loss, chemical carryover, visible water discharge, wetting around the tower and potential contamination of nearby equipment or buildings. They also help maintain cooling tower water balance. In closed circuit cooling towers and evaporative condensers, drift eliminators reduce spray water carryover from the evaporative section.
What is the difference between drift and plume?
Drift is liquid water droplets carried out of the tower by airflow. Plume is visible water vapor or condensed moisture in the discharge air under certain weather conditions. Drift eliminators are designed to capture liquid droplets, not eliminate water vapor. A cooling tower can have low drift but still show plume in cool or humid ambient conditions.
What types of drift eliminators are available?
Common types include cellular drift eliminators, blade-type drift eliminators, PVC drift eliminators, PP drift eliminators, FRP drift eliminators, crossflow drift eliminators, counterflow drift eliminators and replacement drift eliminator packs. The best type depends on tower structure, airflow direction, required drift control, pressure drop, water temperature, chemical exposure and maintenance access.
What is the difference between crossflow and counterflow drift eliminators?
Crossflow drift eliminators are installed in cooling towers where air moves horizontally through the fill section and exits through eliminators located after the fill. Counterflow drift eliminators are installed above the fill or spray section where air moves upward. Their shape, support method, airflow path and drainage direction are different, so they should not be selected interchangeably without engineering review.
How do I select the right drift eliminator?
Selection should consider cooling tower type, airflow direction, air velocity, water loading, required drift reduction, allowable pressure drop, water temperature, material compatibility, chemical exposure, UV exposure, support spacing, installation space and maintenance access. Replacement projects also need the existing eliminator dimensions, photos, support layout and tower model.
Why do drift eliminators clog?
Drift eliminators can clog due to scale, biological slime, algae, suspended solids, dust, fibers, process contamination or poor water distribution. Clogging increases air resistance and may reduce cooling tower airflow. Good water treatment, proper spray distribution, routine inspection and correct material selection help reduce clogging risk.
What should I send to get a drift eliminator recommendation?
Send the cooling tower type, tower model if available, crossflow or counterflow structure, existing eliminator photos, panel dimensions, air direction, water temperature, water quality, chemical exposure, support spacing, required quantity and whether the project is replacement or new tower production. With this data, an engineering team can recommend cellular, blade-type, PVC, PP or FRP drift eliminator options.
Start Your Project
Need Drift Eliminators for New Towers or Replacement Projects?
Send us your cooling tower type, airflow direction, existing eliminator photos, panel dimensions, support spacing, water temperature, water quality and replacement requirements. Our engineering team will help you select a suitable drift eliminator solution.