1、What is Open Cooling Tower ?
An open cooling tower, also known as a direct evaporative cooling tower, is a widely used heat rejection device in industrial and HVAC systems. It operates by bringing hot process water into direct contact with ambient air.
2、How It Works
Hot water from the system is pumped to the top of the tower and distributed evenly over the fill media (heat exchange surface). As the water flows downward through the fill, a fan draws ambient air upward or across the tower. A small portion of the water evaporates, absorbing heat from the remaining water and lowering its temperature. The cooled water is then collected in the cold water basin at the bottom and returned to the system.
3、Key Features
- High heat transfer efficiency through direct water-air contact
- Simple structure and relatively low initial cost
- Effective cooling even in high ambient temperatures
- Suitable for large-scale heat rejection
4、Common Applications
Open cooling towers are commonly used in power plants, chemical processing, steel manufacturing, HVAC systems, data centers, and various industrial processes where large volumes of water need to be cooled economically.
While highly efficient and cost-effective, open cooling towers expose the process water to the atmosphere, which may lead to water loss through evaporation and drift, as well as potential scaling, corrosion, and bacterial growth (such as Legionella). Regular water treatment and maintenance are therefore essential.
3、Why Choose HACST?
40+ years of industry experience with strong R&D capability (20+ engineers, 10+ invention patents, cooperation with Shandong University and Xi’an Jiaotong University)
Internationally certified: ISO9001, ISO14001, ISO45001, CTI, CE, TÜV, BV, SGS, AS1210, and more
Professional international trade team of over 40 members, fluent in multiple languages
Full support for standard and highly customized solutions (OEM/ODM)
“HACST” and “Hengan” brands are well-recognized worldwide. Our equipment has been exported to over 100 countries and regions and serves as a trusted partner for global companies such as Coca-Cola, Mayekawa, Emerson, SRF, Hamon, and many others.
With strict quality control and comprehensive after-sales service, we are committed to providing reliable, efficient, and eco-friendly cooling solutions.
Welcome to contact us for inquiries or customized requirements. HACST looks forward to being your long-term partner!
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