“EQOBRUSH” อุปกรณ์ทำความสะอาดท่อคอนเดนเซอร์แบบอัตโนมัติทุก 4 ชั่วโมง
EQOBRUSH AUTOMATIC TUBE CLEANING SYSTEM FOR HEAT EXCHANGERS AND CONDENSERS
EQOBRUSH on-line automatic tube cleaning systems guarantee optimal performance at all times by preventing fouling or scaling in the tubes of heat exchangers, chiller condensers or steam condensers. With Eqobrush you will realize substantial savings in energy cost and increase system capacity.
 
Eqobrush tube cleaning system is awarded Singapore Green Building Council’s highest accreditation: 4 tick marks and is therefore qualified as a world-class leader in the field of energy saving on chillers.
 
EQOBRUSH SAVES MONEY AND THE ENVIRONMENT
Fouling and scaling in cooling systems cause huge damages in capacity-loss, energy consumption, maintenance, cleaning and, last but not least, equipment lifetime.
EQOBRUSH auto tube cleaning system allows substantial savings, making a pay-back period of less than a year on the investment quite common. It increases capacity in retrofitted existing systems and allows a no-fouling approach for new heat exchanger designs.

ADVANTAGES OF BRUSH TUBE CLEANING SYSTEM

►REDUCE OVERALL FOULING RELATED COST

Fouling costs include cost borne from energy inefficiency, loss of production capacity and the cost related to the cleaning interruptions. The total fouling costs will be minimized when Eqobrush is applied as fouling does not get a chance to affect the tubes in the equipment.

►MINIMIZES DOWNTIMES OF THE OPERATIONS

Eliminate scheduled downtime for tube cleaning with the automatic and online cleaning system. As tube corrosion does not get a chance, also unscheduled downtime for repair or blocking leaking tubes will be a problem of the past.

►NO MECHANICAL OR CHEMICAL CLEANING IS NEEDED

The unpleasant and environmental unfriendly cleanings are no longer necessary and translate in savings of time and money in labor or chemicals cost and fees for the discharge of cleaning chemicals.

►REGULAR CLEANING OF EVERY TUBE IN THE HE OR CONDENSER

In contrary to the alternative ball cleaning system, Eqobrush cleans ALL the tubes on each and every cleaning cycle. Also, there is no loss of effectivity over time as the brushes have a retention rate of 100%.
Read an extensive comparison of brush vs ball cleaning in the following article.

►EXTEND THE LIFETIME OF THE EQUIPMENT

No more premature equipment replacement due to heat transfer efficiency loss caused by leaking tubes (from corrosion) that have been blocked.
Chiller compressors lifespan is extended as the compressor is running at a lower overall capacity level.

• SAVE ON CHEMICALS AND MANUAL CLEANING

The unpleasant and environmental unfriendly cleanings are no longer necessary and translate in savings of time and money in labor or chemicals cost and fees for the discharge of cleaning chemicals.

• REDUCE ELECTRIC ENERGY CONSUMPTION

Better heat transfer leads to a lower approach which can save up to 30% in energy efficiency. In building operations, this translates into double-digit savings on the total electricity bill! The savings on electricity allow translate into a typical payback time of less than a year on your Eqobrush investment and the accumulated savings over the lifespan of the chiller exceed the replacement value of your chiller by far.

• REDUCE FOSSIL ENERGY CONSUMPTION IN SURFACE CONDENSERS

Lower condensate temperature in power plants generates a higher steam vacuum which in turn increases capacity and fossil fuel efficiency. Read more about this in the following article.

• REDUCE ENERGY CONSUMPTION IN SYSTEM PUMPS

A 10% reduction in flow surface (caused by 1mm scaling layer in a 25 mm tube) will increase pressure drop which in turn requires 30% more pump energy (cubic law) to overcome. Alternatively, this means a lower flow rate which adds to the speed of heat transfer and overall system performance.

• REDUCE CAPEX FOR NEW PROJECTS

The fouling factor that is commonly considered in system design (between 25-100% of added heat exchange surface) can be omitted since the fouling will no longer occur. Smaller units mean less CAPEX.

►NO CHEMICALS ARE USED

The discard of chemicals is a burden for the environment that should be minimized. Eqobrush makes further chemical cleanings obsolete, which means no more waste chemicals.

►SAVE WATER IN COOLING TOWERS

The scaling will no longer affect the tubes which means that the cycle of concentration (of minerals) in the cooling water can be increased and cooling tower blowdown may be reduced by approximately 25%.

►GREEN BUILDING PRODUCT CERTIFICATE

Eqobrush tube cleaning system is recognized as an environmentally friendly technology by amongst others the Singapore Green Building Council who awarded it with its highest possible accreditation. This qualifies Eqobrush as a world-class leader in the field of energy-saving on chillers. Read more about the award.

►AUTOMATIC AND REGULAR

Once EQOBRUSH system is installed and running smoothly every 4 hours there will be an automatic cleaning cycle. It doesn’t require any maintenance other than an annual routine inspection. Brushes have a 100% retention rate and a lifespan of 3-5 years.

►SIMPLE PRINCIPLE OF OPERATION

Reverse the water flow to the condenser via the patented reversal valve and propel the brushes up and down the tubes using the power of the water. The electric actuator runs but a few hours (accumulated) per year and does not wear and tear. The energy uptake of the Eqobrush system is just a few dozens of kWh annually.

►NO DAMAGE TO THE TUBES

The nylon brushes that go through the tube powered by the water flow are absolutely harmless to the tubes of the heat exchanger or condenser. Tough enough to remove the fouling and scaling (before crystallization sets in) but gentle enough to leave the (copper) tubes intact. Compare it to the effect of the toothbrush on the enamel of your teeth.

►DURABLE IN USE

The robustly constructed valve will outlive your chiller or condenser and depending on the fouling level of the cooling tower water the brushes will last 3-5 years until replacement.
We give a full 2-year warranty on all our components.

►EASY INSTALLATION ON NEW OR EXISTING SYSTEMS

Eqobrush tube  cleaning systems for chiller condensers and heat exchangers can be delivered worldwide and can be easily installed by local contractors and partners in new projects or for retrofitting existing installations. Where necessary, we fly in our own installation supervisors to ensure smooth operations.  
TUBE CLEANING BRUSHES AND OTHER COMPONENTS OF EQOBRUSH SYSTEM

·Brush

The cleaning function within circular tubes requires a water flow velocity in minimum of 0.6 m/s at a pressure drop of 0.06 bar. For elliptic tubes the velocity in minimum must be 1.0 m/s.
The friction resistance between bristles and the internal wall of the tube reduces the brush velocity to half of the water velocity. This velocity difference between cooling water flow and brush improves the splash-out of the soluble fouling particles. There is no grinding on the natural protection layer of the heat transfer surfaces or protective layers whatsoever.
The materials of brush caps, bristles and internal wire are resistant against any kind of cooling water (for example: city, ground, surface and sea water) up to water temperatures of 100°C. Special materials for hire temperature are also available.
The assortment of cleaning brushes is designed for a diameter range from 10mm to 24mm in case of circular tubes, for elliptic tubes there is a special design available.
The cleaning cycle should be every 2 hours for polluted water like filtered brackish water out of sea’s and lakes up to every 4 hours for standard treated open type evaporative cooling systems. The life time of the brushes vary from 1 to 5 years up to the water quality used.
 
 

·Catch Baskets

The set of catch baskets includes many sizes to meet all tube diameters according to the metric and British dimensioning systems. In general, the connection will be executed by laminating with a special adhesive resulting in a save adhesion at the tube end for many years. But an absolute clean and grease free contact surface in the range of the sockets mouthpiece will be essential.
Another possibility of the connection is the shrinking method, if the tubes have an excess length of 10 mm or more. The required free space for the different tube diameters and their spacing essential, please find out from our data sheets (download section).
The releasable connection between mouthpiece and basket enables very simple to exchange the brushes and/or their inspection, if required.The catch baskets are not subject to wear and tear.
SPECIAL REVERSAL VALVE - SWING-BOX

Reversal Valve is used to reverse or change the flow in the tubes of the equipment, usually heat exchangers and chiller condensers. The switch of the flow can be done manually and automatically on a regular basis, by programming the schedule according to the needs of your operation.
 

Actuators

The combination of rotating drive system and the worm gear unit was a success of our special reversing valve. It offers the selection of moving periods and moving forces for all armature sizes and operation conditions in optimum.
The electric motor drives via worm gear the shaft of the valve. Just in time, after arrival of the switched end position the rotating will be stopped by the limit switch. After the end of the remaining time defined in the reverse position it follows the way back to the normal flow automatically.

Control Box

The control panel carries the components required for the automatic operation.
Any time wanted between 15 minutes and 24 hours can be selected as an interval between cleaning cycles, for the remaining time in reverse position a maximum of 3 minutes is provided. All switching positions are affixed according to the actual operation conditions before delivery at site.
Additional cleaning-cycles can be initiated at any time via a manual switch.
A built-in counting device registers all cycles completed.
As a precaution measure, in case the actuator valve blocks it will give an alarm and immediately return to the original position. The automatic operation then remains in the breakdown position until the pressure switch is manually reset.
The EQOBRUSH system operates completely independent and does not interfere with any of the processes. The switch board therefore does not need to be connected to the overall process control system.

EQOBRUSH Brochure
EQOBRUSH Product Information