Drift Eliminators
Drift Eliminators
Drift eliminators are designed to capture large water droplets caught in the cooling tower air stream. It is used to capture water droplets in the air stream that otherwise would be lost to the atmosphere.
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. PP drift eliminators are able to operate at more extreme temperatures – typically -20-70 / 80oC (short time) whereas PVC material is better suited to temperatures ranges of 0-55 / 60oC (short time)
Thermal Care Engineers have designed Drift Eliminators 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
Our Product Range
The TC-100 drift eliminator is a blade (profile) type drift eliminator designed for optimal drift entrapment efficiency, very low pressure drop and excellent economies.
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 TC-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 | TC-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 oC |
The DrifEl146 drift eliminator provides dimensional stability and durability, with rugged design & structural integrity for long service usage.
The double walled construction offers unmatched strength especially for installations where foot movement on drift eliminators is a given. They can be pressure washed, if necessary, without any damage.
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) | 55oC |
Specifications
- Drift eliminators will keep drift loses to less than .001% of the re-circulating water flow rate.
- Easy to disassemble for clearing and replacement
- Profile type eliminator offers drift loss of 0.001-0.003% of total circulating water with double wall construction.
- Cellular type eliminators offer drift loss of 0.001% of total circulating water.
- Double wall construction offers high beam strength for use of up to 3 Mtr end support in profile type eliminator
- Offers a low pressure drop