Working principle of industrial heat recovery fresh air unit

Industrial heat recovery fresh air unit is an efficient and energy-saving ventilation equipment mainly used in industrial environments. It recovers heat from exhaust air, preheats fresh air, thereby reducing energy consumption and improving energy utilization efficiency. Its working principle can be divided into the following steps:

1. Exhaust and fresh air introduction

The fresh air unit introduces fresh air (fresh air) from the outside through pipelines, while discharging indoor exhaust gas (exhaust). The exhaust and fresh air exchange energy in the heat exchanger, saving energy while ensuring the circulation and cleanliness of indoor and outdoor air.

2. Heat recovery process

Before being discharged, the exhaust gas will pass through the heat recovery device inside the unit, usually a plate heat exchanger or a rotary heat exchanger. At this point, the heat in the exhaust is transferred to the fresh air for the recovery of sensible and latent heat.

Sensible heat recovery: The heat exchanger transfers the heat from the exhaust air to the fresh air through a heat-conducting material, which increases the temperature of the air entering the room and reduces the energy consumption of the heating equipment.

Latent heat recovery: Through the condensation process, latent heat is extracted from the moisture (water vapor) in the exhaust, further improving the efficiency of heat recovery.

3. Fresh air treatment

After passing through the heat recovery device, the temperature of the fresh air is increased, so that in winter, the outdoor low-temperature fresh air is preheated and enters the room, which can reduce the heating demand; In summer, the cooling capacity in the exhaust can be used to cool the fresh air and reduce the cooling burden of the air conditioning system.

4. Filtering and air supply

Before entering the room, fresh air also passes through a filtration system to remove dust, particulate matter, and other pollutants from the air, ensuring that the air entering the room is clean and healthy. After heat recovery and filtration, the fresh air is sent to various work areas through fans to ensure the air quality of the industrial environment.

5. Intelligent control

Many modern industrial heat recovery fresh air units are equipped with intelligent control systems that can automatically adjust air volume and heat recovery efficiency based on indoor and outdoor temperature, humidity, air quality, and other parameters, further saving energy and improving comfort.

summary

The industrial heat recovery fresh air unit achieves energy recovery from exhaust gas through efficient heat exchange technology, greatly reducing the energy consumption of heating or cooling equipment while ensuring indoor air quality. It is suitable for industrial production environments that require high air volume ventilation and strict temperature control.