Heat Recovery Heat Exchanger for Drying

Heat Recovery Heat Exchanger for Drying

The heat recovery heat exchanger is a commonly used energy recovery and energy saving device in the drying process. It works by utilising the heat in the hot, humid air being discharged and transferring it to the fresh air entering the drying system, thereby reducing energy consumption and wasted heat.

In a typical drying system, the following steps can be achieved with a heat recovery heat exchanger:

1. Hot air discharge phase: During the drying process, hot and humid air is discharged from the system, which contains a considerable amount of thermal energy. Under conventional circumstances, this thermal energy would be wasted.

2. Fresh air in phase: In order to maintain the drying process, a certain amount of fresh air needs to be introduced into the system. This air needs to be heated in order to continue to provide the necessary heat.

3. Heat recovery stage: In this step, the heat recovery heat exchanger intervenes. It extracts heat from the hot, humid air being discharged and transfers it to the fresh air that is about to enter the system by providing a heat transfer interface between the hot air being discharged and the fresh air entering. In this way, the fresh air is already preheated when it enters the system, saving energy consumption.

The use of heat recovery heat exchangers significantly reduces the amount of thermal energy required for the drying process, resulting in energy savings. This is particularly beneficial for industrial processes that require a large number of drying operations, such as in food processing, paper and textiles. At the same time, this type of equipment can also help to reduce carbon emissions and environmental impact, as it maximises the use of heat energy already available and reduces energy consumption.