Eqobrush Archives - Watco Group

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Eqobrush
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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29
May

Twisted-Tape Inserts as a strategy to improve heat transfer rates

Twisted tape enhances heat transfer in heat exchanger tubes by modifying the flow channel of the cooling fluid. In fluid dynamics, two main types of flows exist: laminar and transverse. In laminar flow, fluid particles travel in a longitudinal direction, and the only mode of heat transfer is conduction.
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28
Apr

Chiller Efficiency – Why Chiller Manufacturers Fail to Recommend Brush Cleaning Systems

Learn about 3 reasons Why Chiller Manufacturers Fail to Recommend Automatic Brush Cleaning Systems. What is a simple way to keep Chiller Efficiency high?
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10
Jan

Increase Chiller Efficiency By Means of Tube Cleaning and Thermal Storage

As a property manager of a major hotel, hospital, mall, or event space, the efficiency of the chillers can make a big difference in the electricity costs you incur at the end of the month. In this article, we discuss two strategies that could be used independently or in combination to save on chiller operating cost and investment by maximizing capacity: Thermal storage; On-line or automatic tube cleaning;
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14
Dec

Eqobrush Energy Performance Contract for China

Learn how Eqobrush continuous chiller cleaning system helps to improve energy efficiency in Chinese buildings without investment. By avoiding the settlement of any fouling the chillers keep running at optimal performance at all times and >10% electricity can easily be saved.
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25
Oct

Hotel Energy Efficiency – Automatic Chiller Cleaning

The system’s operational principal is simple. A flow reversal valve is installed between the cooling tower and the chiller. Brushes with catch baskets are installed on each tube inside the chiller. By reversing the water flow over the chiller briefly at regular (4-hour) intervals, the brushes travel up and down through the tube, removing all sediments and sending them to the cooling tower.
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28
Aug

Prevent Heat Exchanger Fouling With Eqobrush Automatic Tube Cleaning Systems

Condenser and heat exchanger tubes need to regular brushing in order to clean and get rid of build-up before scaling sets in. Eqobrush Automatic Tube Cleaning System keeps heat exchanger and condenser tubes in pristine condition without any interruption of operations. The formation of fouling and scaling can be avoided with Eqobrush brushing system’s high-frequency automatic brushing of the heat exchanger’s or condenser’s tubes for up to 6 times per day. Powered by the water flow through a flow reversing valve, the brushes which are inserted in the heat exchanger travel up and down the tube resulting in any sedimentation removed by the brushing system before it hardens. Therefor, the tubes are kept in top condition to achieve utmost performance at all times. No more interruptions of operations for mechanical or chemical cleaning. Components of Eqobrush The automatic tube cleaning system is designed to fit any heat exchanger, its components are the following: Cleaning brushes Standard brushes are made from PE caps with stainless steel wires and nylon bristles for application in water with temperatures of up to 60 ᴼC. Standard sizes are from 10 to 24 mm tube diameter. Depending on the fouling level of the cooling tower water, these brushes will last 3 to 5 years until it needs to be replaced. Different materials are available for special applications as well. Catch baskets PE baskets can be removed easily from the socket when required during inspection or brush replacement and reusable as well. Locked in operation to secure all brushes at the tube ends. The catch baskets come in different sizes to meet all tube diameters standards. Control Box The IP55-control panel carries the components required for the automatic operation. Any cleaning cycle interval from 15 minutes and 24 hours can be set. Additional cleaning-cycles can be initiated through the manual switch. Switching positions are fixed before delivery. Actuator Compact multi-functional actuator comes with end position switches and torque control in IP55 housing. The manual emergency operation is possible as well. Reversal Valve The special reversing valves of Eqobrush Automatic Tube Cleaning System are designed in the nominal size of 80 mm to 600 mm for nominal flow rates from 50 m³/h to 3000 m³/h. Automatic Backwashing System Automatic backwashing systems reverse the flow and backwash of the heat exchanger tube-and-shell or plate-and-frame exchangers. Pre-filtration can only remove large particles, while fine articles like silt, sand, mud and other suspended solids enter the plate heat exchangers and gather between the plates, which results in plugging and encourages scaling and pitting. The reversal valve of the Eqobrush Automatic Tube Cleaning System can be easily installed on the supply and return pipes. Without any operation interruptions, it periodically reverse the flow through the exchanger for a short time. The flow then returns to its normal direction after a short while, which is less than a minute. Periodic backwashing by means of an automatic backwashing system removes accumulated solids and allows considerably longer intervals between interruptions of operation for cleaning.
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