Cooling Tower Components

Drift Eliminators

Profiled eliminator modules that change airflow direction and help reduce the escape of entrained water droplets.

Complete product overview

Drift eliminators are used to capture water droplets in the air stream that otherwise would be lost to the atmosphere. Entrapping these droplets is important for not only conserving water as a resource but also to prevent cooling tower water from contaminating the area peripheral to the cooling tower.

The cooling tower industry uses drift rate to compare drift eliminator performance, a relationship that correlates droplet capture efficiency to the water circulation rate in a tower.

The drift eliminator is one of the cooling tower parts it is used to minimize the amount of process water loss within the cooling tower for resource usage efficiency as well as keeping an eye on environmental concerns.

SUPER PLAST drift eliminators are specifically designed to achieve maximum drift removal efficiency in both crossflow and counterflow tower applications with various product options available to minimize pressure drop, drift loss, cost, or a combination of all three.

Cellular Drift eliminators

SP-S130/146, made out of rigid PVC, is designed to remove maximum entrained drift particles from air stream efficiently, with minimum pressure drop, thereby reducing the fan power requirement

SP-100 Drift Eliminators

The SP-100 drift eliminator is a blade (profile) type drift eliminator designed for optimal drift entrapment efficiency, very low pressure drop and excellent economies.

SP-146 Drift Eliminators

The SP-146 drift eliminator is a blade (profile) type drift eliminator designed for optimal drift entrapment efficiency, very low pressure drop and excellent economies.

Double Wall Drift Eliminators

The DrifEl146 drift eliminator provides dimensional stability and durability, with rugged design & structural integrity for long service usage.

Drift Eliminator products

Key product details

Features & advantages

Highlights extracted from the complete product information and editable from the Product admin screen.

The modules are provided additional strength by the insertion of stiffener sheets at regular intervals.

Cellular type drift eliminators offer the highest drift elimination efficiency while introducing a lower static pressure drop

The eliminators can be assembled as well as cut at the field installation to ensure tight fit.

Uniquely designed notches on the surface of the blade, positioned at the point on the drift eliminator blade where the air changes direction advances the principles of drift elimination.

Standard depth of 146-mm makes is easier for the designer.

Lightweight structure and principle of construction offers a low pressure drop across the blade.

Can be transported in nested form and assembled easily at site, saving transportation costs.

Unlike other drift eliminators, where large water entrapment areas lead to increase in pressure drop, the path to air velocity remains sinusoidal, thereby introducing little to no additional pressure drop at this point.

Where it fits

Typical applications

Final selection depends on the actual operating and dimensional requirements.

Crossflow cooling towers Counterflow cooling towers Industrial and HVAC tower systems

Technical library

Models & specifications

Expand a model to review its source technical information. Every table remains editable in WordPress.

Product modelCellular Drift eliminators

Water droplets are separated from the air drift at the three direction change points on the drift eliminator. The SP-S130/146 drift eliminators provide a rugged cellular structure formed by the solvent bonding of sinusoidal shaped corrugated sheets. Individual S-shaped corrugated sheets are bonded with subsequent layers to create the structure. The entire area is thus divided into several smaller S-shaped mini zones.

Features and Advantages

The modules are provided additional strength by the insertion of stiffener sheets at regular intervals.
Cellular type drift eliminators offer the highest drift elimination efficiency while introducing a lower static pressure drop
The eliminators can be assembled as well as cut at the field installation to ensure tight fit.

Technical Specifications

Characteristics	SP-S130/SP-S146
Material	Rigid PVC
Maximum Face Velocity	4.5 m/sec
Module Length	Can be chosen in 600-mm increments. Max suggested length – 1800-mm
Module Depth	130 / 146 mm
Pitch	20 mm
Maximum Spacing of Support with standard thickness of sheets	800 mm
Directional changes for air flow	3
Standard Thickness (Corrugated/Plain)	0.3mm/0.4mm
Average Weight	7.6 / 8.5 kgs/m2
Expected Drift Loss	< 0.001% / 0.0005% of circulating water
Maximum Continuous Temperature (deg Celsius)	55°C

Product modelSP-100 Drift Eliminators

The eliminators can be supported at spans as high as 1800mm. Made out of UV resistant UPVC confirming to standards set by CTI-STD 136, the SP-100 drift eliminator uses the 3-pass system to air efficiently out of the drift eliminator while restricting the drift loss to less than 0.05% of circulating water.

Features and Advantages

Uniquely designed notches on the surface of the blade, positioned at the point on the drift eliminator blade where the air changes direction advances the principles of drift elimination.
Not only do the drift droplets stay on the surface of the blade due to inertial forces but also as the drift laden air enters the drift eliminator assembly the notch on the bottom surface of the blade entraps the drift droplets while causing minimal resistance to the circulating air.
The air then changes direction to follow the sinusoidal path of the drift eliminator while the remaining drift droplets continue in their original direction where they are trapped by the notch on the inner side of the drift eliminator.

Technical Specifications

Characteristics	SP-100
Type of Structure	Nested C-shaped profiles
Maximum Face Velocity	4.0 m/sec
Module Length	600 – 3000 mm
Module Depth	100 mm
Pitch	36.5 mm
Recommended Supporting Span	1200 mm
Max Recommended Supporting Span	1800 mm
Directional changes for air flow	3
Average Weight	6.6 kgs/m2
Expected Drift Loss	< 0.05% of circulating water
Maximum Continuous Temperature	55°C

Product modelSP-146 Drift Eliminators

The eliminators can be supported at spans as high as 1800mm. Made out of UV resistant UPVC confirming to standards set by CTI-STD136, the SP-146 drift eliminator uses the 3-pass system to air efficiently out of the drift eliminator while restricting the drift loss to less than 0.002% of circulating water.

Features and Advantages

Standard depth of 146-mm makes is easier for the designer.
Lightweight structure and principle of construction offers a low pressure drop across the blade.
Can be transported in nested form and assembled easily at site, saving transportation costs.

Technical Specifications

Characteristics	SP-S146
Material	Rigid PVC
Maximum Face Velocity	4.5 m/sec
Module Length	Up to 3500 mm
Module Depth	146 mm
Pitch	45mm / 56 mm
Recommended Supporting Span	1500 mm
Max Recommended Supporting Span	1830 mm
Directional changes for air flow	3
Average Weight	7.2/6.3 kgs/m2
Expected Drift Loss	< 0.002% / 0.05% of circulating water
Maximum Continuous Temperature (deg Celsius)	55°C

Product modelDouble Wall Drift Eliminators

Features and Advantages

The outgoing air is first guided on to the surface of the drift eliminators. This drift laden air then traverses the upward path of the drift eliminator. At the point of the first direction change DrifEl146 introduces a small water entrapment groove. A majority of water droplets are trapped at this notch and channel back into the system.
Unlike other drift eliminators, where large water entrapment areas lead to increase in pressure drop, the path to air velocity remains sinusoidal, thereby introducing little to no additional pressure drop at this point.
The air with the remaining drift droplets undergo another direction change and encounter the surface of the adjacent blade. The system continues to work on the principle of inertial separation. At the exit of the drift eliminator, the air undergoes a third direction change while the water droplets encounter a second notch, which entraps a majority of the drift droplets and brings them back into the system.

Technical Specifications

Characteristics	DrifEl146
Material	Rigid PVC
Type Of Structure	Double wall
Maximum Face Velocity	5.0 m/sec
Module Length	Up to 3500 mm
Module Depth	146 mm
Pitch	56.5 mm / 66 mm
Recommended spacing between supports	2000 mm
Max Recommended Supporting Span	1830 mm
Directional changes for air flow	3
Average Weight	8.15 kg/m2 / 6.6 kgs/m2
Maximum Continuous Temperature (deg Celsius)	< 0.002% / 0.05% of circulating water
Maximum Continuous Temperature (deg Celsius)	55°C

Technical specificationsSpecification set 5

Characteristics	DrifEl146	SP100	SP-14645	SP 14656	SP-S130	SP-S145
Type Of Structure	Extruded Double wall	Extruded single walled	Extruded single walled	Extruded single walled	Cellular	Cellular
Maximum Face Velocity	5.0 m/sec	4.5m/sec	4.5m/sec	4 m/sec	4.5 m/sec	4.5 m/sec
Module Length	Any	Any	Any	Any	Can be chosen in 600-mm increments	Can be chosen in 600-mm increments
Module Width	Any	Any	Any	Any	Can be chosen in 600-mm increments	Can be chosen in 600-mm increments
Distance Between Profiles	56.5mm	36.5mm	45mm	56mm	20mm	20mm
Recommended spacing between supports	2000mm	1500mm	1500mm	1500mm	800mm	800mm
Average Weight	8.15 kgs/m2	6.6 kgs/m2	7.2 kgs/m2	6.3 kgs/m2	7.6 kg/m2	8.5 kgs/m2
Surface area per unit volume	M²/m³ ft²/ft³	250 76	158 48	147 45	120 36	158 48
Drift loss limit	0.003%	0.05%	0.005%	0.1%	0.001%	0.0005%

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