Utilization of Industrial Heat Recovery in Industrial Ventilation

Industrial heat recovery is used in industrial ventilation to reduce energy waste and improve energy efficiency by recovering waste heat emitted from the ventilation system. The following are some common applications:

1. Heat Exchanger
   Use plate or tube heat exchangers to transfer the heat of high-temperature exhaust gas in the ventilation system to the incoming cold air, preheat the fresh air, and reduce heating energy consumption. Suitable for factories, workshops and other places with high ventilation volume.
2. Heat pipe technology
   Heat pipe heat exchangers use the phase change principle to efficiently transfer heat. They are often used to recover ventilation waste heat and are suitable for environments with large temperature fluctuations.
3. Heat Pump System
   Industrial heat pumps extract low-temperature heat from ventilation exhaust air and raise it to a usable temperature for use in space heating or process hot water, significantly improving waste heat utilization.
4. Thermal storage system
   Ventilation waste heat is stored by heat storage materials and released when needed, solving the problem of mismatch between heat supply and demand time, which is suitable for intermittent ventilation scenarios.

These technologies can reduce ventilation system energy consumption by about 30%-60%, and the specific efficiency depends on the waste heat temperature, flow rate and equipment design. When applying, the corrosiveness of the waste gas, the dust content and the maintenance cost of the heat exchanger should be considered. For example, the waste heat recovery technology of the Guangzhou Energy Research Institute emphasizes the selection of appropriate heat exchangers according to the waste heat characteristics to ensure economy and efficiency.