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GEA cooling towers operate on the principle of a counter-current flow. The water to be cooled enters by the upper part of the tower and is distributed by a network of tubes equipped with sprays over the whole exchange surface (flow surface or tubular exchanger). The water runs through the body of the exchanger and is collected in a collector at the base of the tower. The air forced by the fans travels in the opposite direction to the water in the exchanger, is filtered in the eliminator then escapes from the tower.
The exchange ...
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One of the very first factory assembled cooling towers ever designed and manufactured, evolutionary enhancements over the last 70 years have made this the tower of choice for over 50,000 installations since 1936! The Aquatower has inspired many imitators, but only Marley can offer you the original. It's compact size means there are no hidden spray systems, tiny nozzles, or enclosed basins. All primary components of the Aquatower are open to view, which means that maintenance does not get any easier.
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FEATURES:
- 0-5000 microsiemens or ppm
- IP65/NEMA 4X water resistant & corrosion proof enclosure
- Clear, screw down lid allows great visibility while discouraging unauthorized adjustment
- Comes complete with an easily installed CSAR sensor, or for those more demanding jobs, the optional CS51R sensor
- Single set point/alarm
- Easy knob adjustment of set point
- LED shows "above/below" Alarm/control status
- 10 amp relay operates on increasing reading
- Adjustable set point hysteresis
- Automatic 25°C temperature compensation
- Includes power cords
- One (1) input power cord
- Two (2) output plugs
- Selectable 115/230 VAC
- Some options include:
3½ or 4½ Digit Backlit LCD
4-20 mA Output Module
24 VAC Isolated Power Supply
24 VDC Isolated Power Supply
CS51R sensor
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Problem
Cooling tower water is often contaminated by airborne dust, sand, pollen, algae, and pipe scales. These contaminates circulate through heat exchangers, chillers, and compressors, significantly reducing the system's cooling ability. Dirt particles in the water foul the system by settling on warm surfaces. Calcium and magnesium are the bonding elements that cement the dirt on the equipment. Chemical analysis shows that the calcium and magnesium are less than 2% of contaminates, while the rest is dirt that is brought in by the cooling tower. Scale formation reduces the heat transfer rate and increases the water pressure drop through the heat exchanger, condenser, and pipes. A study by Carrier® shoes found that 0.002" fouling will increase pumping needs by 20%.
Solution
Filtration is one of the simplest and most convenient ways of solving these problems. TEKLEEN® self-cleaning water filters provide the ultimate solution where dirty water is a problem. The filters operate on line pressure alone. The self-cleaning process is triggered by a pressure differential and is accomplished in seconds without interrupting the main flow. The filters are compact in size and designed to meet a variety of industrial applications. ASME code stamp vessels are also available as an option.
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Problem
Process water from the plant's cooling tower is often contaminated with airborne dust, pollen, algae, plastic fines, and pipe scale. These contaminates circulate through heat exchangers and chillers and significantly reduce the system's cooling ability. As a result, extruders, molding machines, molds, and compressors heat up and endanger the quality of the product manufactured as well as the machines. In many cases, chemicals and alternative forms of filtration are used without much luck. This problem results in unscheduled maintenance shutdowns which often cause considerable production losses.
Solution
TEKLEEN® self-cleaning water filters provide the ultimate solution where dirty water is a problem. The filters operate on line pressure alone. Self-cleaning is triggered by a pressure differential and is accomplished in seconds without interrupting the flow. The filters are compact in size and designed to meet a wide variety of industrial applications.
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