The waste heat recovery and utilization heat exchanger of a wood dryer refers to a device that recovers and utilizes the heat from the hot air discharged from the wood dryer. Preheating and drying machine air intake is one of the most common applications for waste heat recovery and utilization in wood drying machines.

The wood dryer generates a large amount of hot air during the drying process, and the temperature of these hot air is usually between 60 ℃ -80 ℃. If not utilized, these thermal energy will be wasted in vain. Recycling and utilizing these thermal energy to preheat the air intake of the dryer can reduce its energy consumption and improve drying efficiency.

The specific principle is to use the hot air discharged from the wood dryer as a heat source and exchange heat with the inlet air of the dryer. After heat exchange, the temperature of the air entering the dryer will increase, while the temperature of the hot air will decrease. The reduced hot air can continue to be used for other processes, such as heating water, power generation, etc.

Preheating and drying machine air intake can bring the following benefits:

Reduce the energy consumption of the dryer: The higher the inlet temperature of the dryer, the lower the energy consumption of the dryer. Preheating the air intake of the dryer can reduce the energy consumption of the dryer by about 20%.

Improve drying efficiency: The higher the inlet temperature of the dryer, the faster the drying speed. Preheating the air inlet of the dryer can improve the drying efficiency by about 15%.

Reduce pollutant emissions: Drying machines will produce certain pollutants during the drying process. Preheating the air intake of the dryer can reduce the energy consumption of the dryer, thereby reducing pollutant emissions.

Overall, preheating the air intake of a wood dryer is one of the most economical and effective applications for waste heat recovery and utilization.