EQOBRUSH introduction

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

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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

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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
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Benefit Energy saving
Fouling
Scale
Power
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.
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
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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
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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

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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)

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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)

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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

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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

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Payback ROI Sample Calculation
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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

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