H fin tube known as square fin tube, There are two type of H fin tubes, one type with single tube, normal called square fin tube, the other with Double tube, normal called rectangular fin tubes. and also manufactured as per customers requirements. Due to rectangular shapes, which can offer large surface area compared to the Spiral Finned tubes. Due to larger surface area available, these finned tubes are used mostly in Air Heating application to reduce the overall size of the equipment.

H fin tube is a kind of boiler parts, to have two steel circular symmetry to be welded on fluorescent tubes to form fins positive shap much like letter “H”, so called H-fin tube. H-economizer widely used in utility boilers, industrial boilers, marine power, such as the tail of heat exchanger components.

Principle:
H-type finned tube economizer features
Structural form:The basic form is “H” type and double “H” type, arranged in series.

The economizer uses the H-type finned tube economizer to replace the light tube economizer, which can increase the heat exchange area and reduce the number of tubes arranged, thereby increasing the flue gas flow section, reducing the smoke velocity and reducing wear. Since the wear rate of the pipe is proportional to the 3.33 power of the flow rate of the flue gas, if the flue gas velocity is reduced from 9m/s to 7m/s, the wear rate will be reduced to 43% of the original. At the same time, the experiment shows that the finned tube itself has the effect of making the fly ash concentrate in the middle of the tube row, so the use of the finned tube economizer can reduce the wear and tear in the structure.

H-type finned tube economizers are arranged in series, and the H-type fins divide the space into several small areas, which have an equalizing effect on the airflow and greatly reduce the wear and tear.

Max. Working Temperature: 300 °C
Atmospheric Corrorsion Resisitance: OK
Mechanical Resistance: Good
Fin Material: Copper, Aluminum, carbon steel, stainless steel
Base Tube materials: Any material available, such as Carbon steel Tube, A179, A192, A210, stainless tube A269/A213 T5 T11 T22 304 316

Rectangular Finned Tubes

Single pipe square finned tubes and twin pipe rectangular finned tubes are also manufactured as per customers’ requirements. These are particularly suitable for dust laden exhaust gases, e.g. for economizers in coal and oil fired units or waste incinerators.