Author: Site Editor Publish Time: 2025-05-26 Origin: Site
Heat exchangers (coils) are designed mainly for the heating and cooling of air or other gases. Warm or hot water, oil, process liquid or steam, etc. are used as the heating medium. Chilled water, evaporative refrigerant, oil or other liquids are used as the cooling medium.
The coils are available in versions for e.g. installation in ducts, air handling units or plant rooms, various materials and fin pitches. All the coils for ducts conform to Tightness Class B on the air side. As a trusted coil manufacturer in China, we supply reliable industrial air cooler coil solutions for both HVAC and heavy industrial applications. This includes specialized coil types such as fluid coils used in a wide range of systems.
What Are Fluid Coils?
Fluid coils transfer heat using liquids like water or a water-glycol mix. They’re also called water coils or glycol coils, and are often used in HVAC systems. These coils are widely used in air handling systems, dry coolers, and industrial process cooling.
In operation, hot or chilled fluid flows through tubes while air passes across finned surfaces. The heat exchange occurs efficiently due to the large surface area of the fins. Unlike direct expansion (DX) coils, fluid coils do not involve refrigerant. This makes them simple, safe, and highly adaptable to many industrial and HVAC systems.
Material & Design Flexibility
Since every product is custom-made to fill a special purpose,two coils seldom look alike. However the fundamental principle is always the same. The coils are constructed of a large number of thin sheet metal fins, with holes for the tubes. The tubes are fitted into the fins where they are mechanically expanded to fit snugly. This design enables the liquid flowing through the tubes to heat or cool the air passing through the coil in an extremely effective manner.
The fins are commonly made of aluminium and the tubes are of copper. Common material combinations:
-Stainless steel tube + stainless steel fin (for high corrosion resistance)
-Copper tube + aluminum fin (for general HVAC use)
These configurations are chosen based on operating temperature, pressure, corrosion resistance, and space constraints.
Blue hydrophilic coated aluminum foil for enhanced heat transfer and corrosion protection
Coils of this type can be used for a variety of different applications. Besides heating, cooling and heat recovery in ventilation systems, the coils are used for:– The cooling of generators and big electric motors
– The cooling of oil circulated in transformers and locomotives
– The recooling of chilled water, for example, in stationary diesel motors
– Lumber and pulp drying
– The cooling of cold storage and freezing rooms
– Dumping waste condensation heat from cooling machines, etc
We offer options in stainless steel tubes, stainless or aluminum fins, and various tube diameters and row arrangements.
All coils are designed for high thermal efficiency, low pressure drop, and long-term durability. Optional features include mounting brackets, headers, or custom connection sizes to fit your system.
Send us your drawings or specifications today — our engineering team is ready to support your project with high-quality, precision-built coils.
