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Closed Loop Cooling Towers

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Because the processed material and the coolant are moved through separate circuits in a closed loop cooling tower system, it is not necessary for the two substances to be compatible as is the case in open systems. Additionally, this isolation eliminates room for contamination which can be harmful to human health and reduce operational efficiency. Although the initial cost of closed loop cooling towers can be greater than other cooling tower systems, the lower maintenance costs make indirect cooling a long-term cost effective option. Read More…

Closed Loop Cooling Towers Closed loop cooling towers utilize a functional design in which the coolant and the process substance are kept completely isolated throughout the cooling process, allowing recirculation without additional filtration. Also referred to as indirect or closed circuit cooling towers, this compact design is very versatile and one of the safest methods of process cooling.
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Leading Manufacturers

Reading, PA  |  610-374-5109

Brentwood focuses solely on what’s inside your tower. We know your process is paramount, so you need optimized cooling tower products to support it. By offering the most complete line of internal polymer components in the industry, Brentwood works with you to ensure you receive the best-suited products for your project and application.

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Brentwood Industries, Inc. $$$

Oklahoma City, OK  |  405-979-2100

Our TTXL Series Modular Cooling Tower is a mechanical-draft cooling tower that reduces cost and installation time. It also helps to reduce operating costs and tower maintenance. Our customer driven existence pushes us to be the greatest company in the world when it comes to cooling towers. We wish to be the mark by which all other cooling tower companies are measured. Our in demand products ensure that we will always be able to deliver affordable products at the best possible value.

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Tower Tech, Inc. $$$

Overland Park, KS  |  913-664-7400

SPX Cooling Technologies, Inc. is a leading full-line, full-service cooling tower manufacturer. The companies that formed SPX Cooling Technologies were founded nearly a century ago and have more than 250 global patents in the industrial, process cooling, refrigeration, and HVAC markets. With more than 150 offices, subsidiaries, and partners worldwide, we have the global reach and local services necessary to deliver solutions for our customers.

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SPX Cooling Technologies, Inc. $$$

Baltimore, MD  |  410-799-6200

Cooling towers were added to Baltimore Aircoil's product line back in the 1950s. Industries in the power generating and industrial process sector are served by us. We are CTI certified and are an ISO 9001 company.

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Baltimore Aircoil Co. $$$

Houston, TX  |  800-473-9178

At Cold Shot Chillers, we create a number of chilling systems, including cooling towers. Our products are designed for durability and cost effectiveness. Our engineers can easily custom build any machine to fit the needs of a particular application.

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Cold Shot Chillers $$$
placeholder image Brentwood Industries, Inc. Tower Tech, Inc. SPX Cooling Technologies, Inc. Baltimore Aircoil Co. Cold Shot Chillers

As 100% of fluids are returned to circulation rather than being evaporated, water costs are lowered. Similarly, levels of thermal pollution are lower as there are no exhaust fumes into the atmosphere. The many benefits of closed loop cooling towers allow their use in several commercial and industrial settings such as air conditioner cooling or HVAC cooling towers, water treatment, power generation, plastic and paper manufacturing.

While specific models may vary, the closed loop system works in a manner similar to refrigeration units. An external circuit houses a second circuit which is composed of coils, or tube like bundles. These coils or bundles contain the coolant and are curved or wound to increase the surface space allowing more productive cooling. As the cooled agent is moved through the interior circuit, the hot processed materials flow around it.

The surface between the two is made of conductive materials and acts as a heat exchanger. Heat moves from the process substance to the coolant, thereby lowering its temperature and allowing it to be returned to circulation. After the temperature of the coolant drops back down, it too may be reused. In some systems the placement is reversed and the coolant runs through the exterior channel surrounding the hot fluid, but the general heat exchange process remains the same.

Materials used in the development of industrial cooling towers vary as they need to suit a variety of needs. In general, carbon, stainless steel, copper and ceramics are used because of their conductive qualities and durability. Forced or induced draft techniques may be used to move air or fluids through closed loop cooling towers to increase performance and process efficiency.







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