Finned Tube Radiator for Heat Recovery Heat in The Gas Outlet of The Sawdust Drying Biomass Burner

The client use a biomass burner for drying sawdust.

They need heat recovery heat in the gas outlet of the dryer / The goal is to exstract heat from the exhaust fan, and use this to make hot water/steam.

We recommend the finned tube heat recovery heat exchanger

Finned tube heat exchangers offer good heat transfer capabilities and durability for heat recovery in sawdust drying plants. The choice between a finned - tube heat exchanger and other types depends on factors such as the specific characteristics of the exhaust gas, the available space, the required heat recovery efficiency, and the budget for installation and maintenance.

Advantages

Enhanced heat transfer efficiency: The fins on the tubes significantly increase the heat transfer area, which enhances the heat transfer efficiency. This is particularly beneficial when dealing with exhaust gases where the heat transfer coefficient is relatively low. The fins help to improve the heat transfer between the exhaust gas and the fluid (usually water) flowing through the tubes, allowing for more effective heat recovery.

Good for low - velocity fluids: They are well - suited for applications where the fluid velocity is relatively low. In the case of using the heat exchanger to heat water, even if the water flow rate is not high, the finned - tube design can still ensure good heat transfer due to the increased surface area. This is advantageous as it allows for more flexibility in the design of the water - heating system.

Durability and resistance to fouling: Finned - tube heat exchangers are often made of materials that are durable and have good resistance to corrosion and fouling. The tubes and fins can be constructed from stainless steel or other alloys, which can withstand the harsh conditions of the exhaust gas from a biomass burner, including exposure to particulate matter and potentially corrosive gases. This helps to maintain the performance of the heat exchanger over time and reduces the need for frequent maintenance and replacement.

Versatility in design: They can be designed in various configurations to meet different installation requirements and heat transfer needs. For example, the fin density, tube diameter, and length can be adjusted according to the specific characteristics of the exhaust gas and the desired hot water or steam output. This allows for a customized solution that can optimize heat recovery in the context of a sawdust drying plant.