Heat exchanger knowledge Archives - Watco Group

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Heat exchanger knowledge
18
Jun

Using Air-Conditioning Energy For All Its Worth

In the search of ways to reduce building operating cost and energy consumption in the new US Department of Labor Building, a simple method of improving heat transfer was applied. A Presidential Letter of Commendation was given to Mr. Petritsch for such contribution to energy consumption and more economic management.
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18
Apr

How to Clean Heat Exchanger Tubes

This article introduces two main ways of how your heat exchanger tubes can be cleaned. Heat exchanger cleaning is essential to keep your processing equipment at the required temperature and working efficiently. Heat exchanger fouling is caused by fouling and scaling that settles in the tubes and algae that inevitably grows as a slimy substance on the pipe walls. This reduces the efficiency of the heat exchange process and also reduces water flow in the cooling system as fouled tubes have a higher pressure drop. Eventually the heat exchangers get clogged. Soft residue starts solidifying into a hard residue within a matter of hours. This process is referred to as scaling. Scaled residues need-intense cleaning to be removed. If the tubes would be brushed before scaling kicks in, they are kept clean without too much effort at all times. Imagine, us not brushing our teeth 3 times a day. For those of us who don’t, they have had the rather unpleasant experience at the dentist cleaning the scaling. It becomes clear that maintaining a clean system is critical for its healthy long-term functioning and high-frequency cleaning has the best results. The regular manual heat exchanger cleaning route This means turning off and disassembling your heat exchangers and cleaning them manually. Chemicals are used to dissolve and clean the residue or brushes possible in combination with high-pressure cleaning are applied to remove the hard residue that is stuck tightly to the walls of the heat exchanger. This works, the only downside is that it’s a constant requirement for operating systems and that the performance constantly deteriorates between service interruptions.Because there is nothing to reduce the formation of various debris and residue, the fouling layer accumulates linearly, causing heat transfer and efficiency problems. Every stop of operations to clean the heat exchangers is expensive unnecessary downtime. The automatic heat exchanger cleaning route To prevent scaling from happening it is possible to insert brushes in the heat exchanger tubes. With a reversing valve using water pressure to send the brushes up and down the tubes every few hours, we have a constant cleaning process. Just as brushing your teeth regularly.EqoBrushis designed to do just that. As result of this constant cleaning, debris does not have the time to accumulate and solidify. This means that your heat exchangers stay at optimal performance all of the time. The EqoBrush system typically has a pay-back time of less than one year, as it lets the heat exchangers work at full capacity constantly. The reductions of energy and water consumption on top of limited use and disposal of chemicals provide a great ecological incentive for companies looking to reduce their wastefulness.
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10
Jan

Reduce total fouling related cost with Eqobrush in processing industry

EQOBRUSH in the Chemical- and Petrochemical Industries.   EQOBRUSH impact on Total Fouling Related Cost For over 50 years Automatic Brush Cleaning systems are popular in process heat exchangers as a tool to keep the tube walls in top-condition. Any normal heat exchanger will foul during operation. Fouling reduces efficiency and calls for cleaning sessions with interruption of operations. Between sessions the heat-exchange efficiency is progressively reduced up to the level where the heat exchanger becomes bottle-neck for production capacity of the operation. Unexpected shut down due to uncontrolled fouling is a substantial threat to the process industry with high expenses involved. Total Fouling Related Cost (TFRC) in processing industry is difficult to assess. Literature reports the TFRC at 8% of the total maintenance budgets and in addition up to 5% of energy consumed is used to overcome fouling.
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04
Jan

Heat Exchanger Tube Cleaning

Heat exchanger tube cleaning As a vital part of the cooling system cleanliness of the heat exchanger tubes contribute to a great extend to the overall efficiency of the cooling system.   Water in an open cooling system can cause problems do to mineral deposits (concentration via evaporation), algae growth (availability of oxygen) and sedimentation of dust and debri ending up in the water stream via the cooling tower. Even the most stringent water management system cannot prevent from this affecting the cleanliness of the tubes and hence reducing the performance.  
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04
Jan

Heat Exchanger Maintenance

Heat Exchanger Maintenance Heat exchanger maintenance is something that every production facility operators should worry about. The equipment in a sub-optimal state increases costs and increases wear-and-tear over time eventually shortening the life span. Read how to remedy this issue…  
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04
Jan

Cleaning of Heat Exchangers

Cleaning of Heat Exchangers Heat exchangers are critical components of your system and are in regular need of cleaning. The constant need for process cooling is provided by the water circulating over heat exchanger tubes and cooling tower. Because the heat exchanger performance is paramount to keep your system running at required capacity it is crucial to keep the tubes in optimal shape at all times. Eqobrush helps in achieving this.  
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04
Jan

Fouling Heat Exchanger

It is common knowledge that there is a regular and revolving need for heat exchanger cleaning. This is because of the fouling that occurs in the system. The tubes get clogged up over time and this impacts the performance substantially.  
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04
Jan

Fouling Factor Heat Exchanger

The fouling factor in heat exchangers stands for the resistance to heat flow through the walls of the tubes in the heat exchanger, reducing the efficiency of the whole unit. The fouling itself is caused by slime, mineral deposits and foreign matter sticking on the walls of the heat exchangers, and solidifying into a solid surface that impacts the water flow and heat exchange and distribution.   We introduce regular, high frequency cleaning with Eqobrush to avoid any fouling buildup. Otherwise, cost increases and performance loss is to be expected.  
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