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

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

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

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

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 0.000 0.000 0.00% 0.0001 0.03 1.10% 0.0005 0.15 5.50% 0.0010 0.30 11.0% 0.0020 0.61 22.0% 0.0030 0.91 33.0% 0.0040 1.22 44.0%

Benefit: Energy saving The Graph illustrates potential savings for different condenser sizes based on 0.00025 FF with OLC, compared to 0.002 FF without OLC

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

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)

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%)

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

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

Payback & ROI Sample Calculation

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