Product Description:

The waste heat boiler for generator sets is a specialized energy-saving product designed specifically for the recovery of flue gas waste heat from generator sets. By using H-shaped finned tubes to strengthen heat transfer elements and expand the heating surface, the heating surface on the smoke side of the water pipe is greatly increased. At the same time, strong turbulence is formed on the surface of the H-shaped finned tubes when the flue gas flows, which improves the efficiency of heat transferGenerator set waste heat boilerThe heat transfer efficiency and the effect of reducing cigarette ash accumulation. The waste heat recovery device of the generator set has the advantages of simple structure, high thermal efficiency, long operating life, safety and reliability, and easy maintenance. This waste heat boiler is used in the combined cycle power generation device of fuel and gas generator sets. It uses the exhaust gas of the gas internal combustion generator set to be introduced into the boiler for heat exchange, generating steam that can drive the steam turbine generator set to generate electricity. At present, hundreds of gas-fired power generation units have been applied, all of which have achieved considerable economic benefits.

Product features:

1. The fins adopt a special structure of tooth shaped welding joints, resulting in high welding quality of the product. Our company's H-shaped finned tubes have high fusion rate of welds, high tensile strength of welds, low contact thermal resistance, and good heat transfer performance. In addition, the surface is smooth and aesthetically pleasing.

2. It can greatly expand the heating area. Compared with spiral finned tubes, H-shaped finned tubes have stronger heating surface expansion ability. By balancing the factors of rib efficiency and investment, the H-shaped finned tube can maximize the expansion of the heating area, while the spiral finned tube is limited by the extension rate of the rib material and the height of the rib, so the area expansion is limited, in order to achieve optimal overall performance and cost-effectiveness. On the other hand, H-shaped finned tubes can be arranged with more heat transfer area in a limited space to save space.

3. Using H-shaped finned tubes with the same rib spacing and rib heightGenerator set waste heat boilerThe expansion area is 37% larger than that of spiral ribbed tubes. For spiral finned tubes, increasing the rib height further makes it difficult to wind the fins, while increasing the rib height of H-shaped finned tubes does not increase the manufacturing difficulty. Therefore, for designers, to continue increasing the area in a limited space, they can only choose to reduce the rib pitch for spiral finned tubes, while for H-shaped finned tubes, they can choose to reduce the rib pitch or increase the rib height. Therefore, H-shaped finned tubes can more conveniently adjust the heating area.

Product advantages:
1) High heat exchange efficiency. The fusion rate between fins and steel pipes is over 95%, with low contact thermal resistance and good thermal conductivity. Although the airflow disturbance caused by the absence of spiral finned tubes weakens the heat transfer outside the tube to some extent, due to the approximately parallel flow characteristics of the airflow between the heat transfer tube bundles, there is less ash accumulation on the heat transfer surface during operation, and the fins are more evenly flushed. The effective utilization rate of the H-shaped fin expansion area is higher than that of spiral finned tubes, and the comprehensive heat transfer efficiency is about 10% higher than that of spiral finned tube bundles.

2) Low flow resistance. Due to the approximately square structure of H-shaped finned tubes, when assembled into a heat exchanger, the tube bundles are divided into numerous small channels by fins, which have a certain uniform effect on the airflow. The airflow is approximately longitudinally parallel, and the airflow resistance is relatively small. On the other hand, spiral finned tube bundles have strong airflow disturbance and high turbulence due to the guiding nature of the fins, resulting in high airflow resistance. Under the same design flow rate, the flow resistance of H-shaped finned tube bundles is significantly reduced compared to spiral finned tube bundles.

3) Less dust accumulation. Smoke contains fly ash, which is generally easy to deposit on the windward and leeward sides of the pipe bundle. The higher the smoke flow rate, the less ash accumulation, and vice versa. If the airflow is uneven, areas with less airflow will accumulate severe dust. Spiral finned tube bundles have a guiding effect on airflow, resulting in uneven and disordered airflow, which can easily cause severe dust accumulation in local areas. On the other hand, H-shaped finned tube bundles have both uniform and parallel flow characteristics, making it less likely to cause severe dust accumulation in local areas. Fly ash can be carried away with the airflow in a timely manner. So compared to spiral finned tube heat exchangers, H-shaped finned tube heat exchangers have less ash accumulation.

4) Light wear and tear. The flue gas contains fly ash particles, which flow at high speed with the airflow and collide with the pressure pipe wall, causing wear on the heat transfer pipe. The heat exchanger composed of H-shaped finned tubes divides the space into several small areas with fins, which have both uniform and downstream effects on the airflow. Compared with spiral finned heat exchangers, the wear is uniform and lighter, and the service life of the equipment is improved.

5) Small in size and lightweight. H-shaped finned tubes have a high area expansion rate, less ash accumulation, and high heat transfer efficiency. When the heat transfer capacity is comparable,Generator set waste heat boilerThe occupied space can be reduced, and the amount of high-grade materials (i.e. pressure pipes) can be minimized as much as possible, while using more low-grade materials (fins). For new engineering projects, the height of the generator set waste heat boiler layout can be reduced, the overall weight can be greatly reduced, the suspension system load can be lowered, and the overall cost can be lowered; For renovation projects, it is possible to arrange as much heat exchange area as possible in a limited space, reduce exhaust gas temperature, improve waste heat recovery efficiency, or increase maintenance space for easy maintenance.



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