1. AUTOMATIC ON-LINE BRUSHING FOR HEAT EXCHANGERS AND CONDENSERS
Energy Saving – Performance Enhancing

3. What is EQOBRUSH?
An automatic on line cleaning system for chiller condensers and heat exchangers
Cleans fouling from piping without shutting down the equipment
Various cleanings per day avoid any fouling or scaling in pipes
Energy savings and capacity gains allow an earn‐back period of less than 6 months

4. Benefits of EQOBRUSH 10‐40% Energy Savings
Reduction of machine down‐time for cleaning
Reduction of chemicals for water treatment and periodical cleaning
Increased production capacity
Reduction of water consumption

5. Principles of Operation
The automatic valve reverses the water flow in the Heat Exchanger every few hours for 30 sec.
Nylon brushes (housed in baskets connected to the tube ends) are then propelled through the pipes, cleaning any scaling or fouling
After the reversion the brushes position in their baskets, causing no pressure loss
Reversed

6. Benefit: Energy saving
Examples of the amount of scale build‐up, and the increase in power consumption for various fouling factors is illustrated in the Fouling Factor Table.
Fouling
Scale
Power
Factor FF
thickness in mm
increase required % % % % % % %

7. Benefit: Energy saving
The Graph illustrates potential savings for different condenser sizes based on FF with OLC, compared to FF without OLC

8. Benefit: Reduced maintenance cost and machine down‐time
Periodical maintenance of chillers is eliminated by the EQOBRUSH‐system which means reduction in:
Costs of labor,
Cost of chemicals
Cost of cleaning equipment
Human exposure to corrosive chemicals

9. Benefit: Reduced water consumption
EQOBRUSH allows a higher level of salt concentration (higher cycle of concentration) in the cooling water.
Reduction of blow‐down volumes (eg sewage cost)
Reduction of suppletion water volumes (water cost)

10. Benefit: Capacity
Optimal cooling performance guarantees equipment can run at top capacity. Sub‐optimal cooling leads to underperformance
Down time for manual cleaning = capacity loss (up to 5%)

11. Comparing EQOBRUSH with Ball Based systems
WACON‐OLC
Lower investment, simpler system
Lower system maintenance, lower replacement cost
All pipes get brushed on each cycle € all pipes remain clean
Ball Systems
More complex system, requires higher investment
Strainer to catch balls needs replacement, balls get lost and need replacement
Pipes in “slow zone” of unit (outside) get less cleaning cycles

12. Components Standard product lines:
– OLC‐Valves in 8 standardsizes ranging from 150‐500 mm (increase by 50 mm)
Brush and Basket sets (2 baskets, 1 brush) in most common sizes from 10‐28 mm
Special sizes on request

13. Payback &
ROI
Sample Calculation

14. Company background
Kalvo GMBH; Germany founded and focused on OLC since 1982
WACON Int. Ltd; Specialist in industrial water cooling solutions in Asia since 1996
Newly formed JV WACON‐KALVO to introduce this technology to Asia
QUALITY GUARANTEE: All products manufactured in Germany