H-type finned tubes are heat exchange elements for waste heat boilers.
The key component of the economizer in H-type finned tubes is the fins, which can also be called butterfly tubes or booster tubes. The resulting economizer has high heat transfer performance, making it suitable for various applications and with a high frequency of use. However, due to its inherent structural limitations, many industries cannot use H-type finned tubes.
H-type finned tubes can be mainly divided into two structural forms: double-H and H-type. Because their structural forms differ, their application industries and environments also vary, but the arrangement is based on a specific sequence. When selecting one, we must first consider our own requirements.
What are the specific performance characteristics of H-type finned tubes?
1. H-type finned tube economizers can directly replace bare-tube economizers. This not only increases the required heat transfer area but also reduces the number of finned tubes needed. Simultaneously, it increases the overall cross-sectional area of the flue gas flow, correspondingly reducing the flue gas velocity and, most importantly, minimizing wear.
Since there is a proportional relationship between the number of wear occurrences between pipes and the flue gas velocity, a significant reduction in flue gas velocity naturally leads to a gradual decrease in the wear rate. Experiments have shown that H-type finned tubes inherently have a centralized dust collection effect, thus reducing wear between components. If the H-type finned tube is designed as a double H-type, its rigidity is further improved, allowing it to be used directly as a long tube channel.
2. Depending on application requirements, different sequential layouts can be implemented for the economizer of H-type finned tubes. H-type radiators allow for different spatial distribution settings, significantly improving airflow balance and reducing wear.
3. Because of the straight channels on both sides of the H-type finned tube, ash removal is highly efficient.
4. The H-type finned tube design is space-efficient, resulting in a significant reduction in overall weight and manufacturing costs.
5. H-type finned tubes typically exhibit excellent energy-saving and consumption-reducing performance. Power generation units using this economizer design reduce exhaust gas losses by more than half, achieving a steam utilization rate of approximately 3 kilowatts per ton.
6. H-type finned tubes are particularly simple and labor-saving in daily maintenance and operation. The economizer uses an integrated assembly manufacturing method with fewer moving parts, a simpler overall structure, and easier installation. Its inherent automation design makes operation and maintenance more convenient, reducing labor costs.