H Type Or Double H Type Square Fin Tube For Air Cooled Heat Exchangers

Definition

Rectangular fin tubes are heat exchanger components where rectangular-shaped fins are attached to the outer surface of a base tube. These fins increase the surface area for heat transfer, improving the overall efficiency of the heat exchange process.These special rectangular fins are typically welded, extruded, or mechanically bonded to the base tube. The fins are arranged in a rectangular pattern, providing a structured and efficient design for heat dissipation or absorption.

The base tube is usually made of materials such as carbon steel, stainless steel, or copper alloys. The fins are often made of materials with high thermal conductivity, such as aluminum or copper, to enhance heat transfer.

Characteristics

The fin is divided into two symmetrical half pieces. The tube wall is pressed down from both sides, and resistance welding is used to weld on the pipe wall with a certain gap left in the middle.

Two circular tubes can share a group of fins, called double tube H-shaped fins, or a single tube H-shaped fin can be placed in the middle.The heat exchanger composed of H-type finned tubes is closely arranged and the tube bundles are arranged in order.

Advantages

High Surface Area: The rectangular shape of the fins provides a large surface area for heat transfer, improving efficiency.

Structural Rigidity: The rectangular design offers better mechanical strength and resistance to deformation compared to some other fin shapes.

Easy Cleanning: The fins are parallel and independent of each other, and there is no influence of helix angle, so it is easy to remove ash.

However, this structured design may create a higher pressure drop in the airflow, requiring more energy for ventilation. And the process of attaching rectangular fins can be more complex and costly compared to simpler fin designs.

Application

Rectangular fin tubes are commonly used in air-cooled heat exchangers, radiators, and industrial cooling systems. They are particularly effective in applications where space constraints or specific airflow patterns require a structured fin design.