ADDITIONAL INFORMATION:

Fluid Coolers are very similar to cooling towers. They both reject heat by evaporating water and use many of the same components; except for the coil bundles used in coolers in place of some or all of the wet deck used in cooling towers.

Coil products can be described such as:

- Closed circuit cooling towers (fluid coolers) used to cool fluids or,

- Evaporative Condensers that condense refrigerant.

Closed circuit towers typically produce the same result as the “open” cooling tower- that of cooling a water stream from an elevated temperature to a reduced temperature- although other fluids can also be cooled. The fluid in the process is confined within a coil inside the fluid cooler. Heat is passed through the walls of numerous coil circuits to water, which is sprayed over the coil. The process fluid remains free of contamination while the water on the exterior sacrifices itself to evaporating and collecting debris from the airstream.

The water from the basin is drawned by a small pump, mounted on the side of the fluid cooler and it is conveyned to the top of the cooler where it is sprayed over the coil.

The closed circuit tower is ideal for cooling equipment with small, hard to clean passageways that would clog with a conventional cooling tower. The quality of the water is preserved in closed circuit. Therefore the closed circuit cooler costs appreciably more to purchase and operate. In addition to that, the physical size of the cooler is always bigger than that of a cooling tower, sized for the same duty.

Another difference we should point out is that traditional cooling towers must be installed at the highest system elevation, fluid coolers can be mounted at any elevation in the system, as long as the maximum pressure is not exceeded.

Coils can be made from steel, copper or stainless steel, depending on the fluid and plant conditions. Steel coils, for example, should not be applyed to systems that are open to the atmosphere. An open system allows air to continually enter causing corrosion of the untreated coil interior reducing heat transfer and causing premature coil failure. Deionized water can also ruin steel coils in very short term. Copper coils work better for deionized water.

Another type of fluid cooler is the evaporative condenser. It is built like a fluid cooler but instead of sensible temperature reduction of a liquid stream, it accepts a vapor (such as compressor discharge in a refrigeration system) and extracts latent heat causing the vapor to condense.

For additional information, please contact our engeneering department.

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