H type finned tubes are also called square finned tubes or rectangular finned tubes. According to the research surface, the dust-proof performance and abrasion resistance of H type finned tube are better than spiral finned tubes. H type finned tube is hesitant The fins are welded on both sides of the tube that are not easy to accumulate dust. The airflow can pass straight through, and the fins are not easy to accumulate dust. At the same time, there is a gap between the fins. Under appropriate customs, it has a good self-cleaning function. Therefore, H-shaped finned tubes are often used in economizers.
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