I. Introduction to Air Heating Units

*This equipment is a heating and ventilation device specifically developed by Shandong Shiguang Industrial Equipment Group Co., Ltd. for industrial and mining enterprises. It features stable performance, long service life, and a high degree of automation.

*The product is divided into two types: steam type and hot water type. The steam type uses steam as the heat source; the hot water type uses hot water as the heat source, with a hot water temperature not lower than 110°C.

*The product is equipped with a control system developed by Shandong Shiguang Industrial Equipment Manufacturing Co., Ltd. It automatically adjusts the outlet air temperature and air volume based on changes in ambient temperature, ensuring comfort and safety in the production environment while significantly reducing energy consumption.

 

II. Technical Advantages

  *Due to the extremely low temperature at the mine shaft entrance in winter, freezing may occur, posing production safety risks. To address this issue, our company developed the air heating unit, which serves as a mine ventilation and heating device. The air heating unit can maintain the ventilation temperature at the shaft entrance above 2°C, effectively preventing freezing and ensuring production safety.

  *An air heating chamber is installed near the shaft entrance. The air heating unit is mounted inside this chamber, with its intake facing the chamber’s air intake window. The outlet is connected via ducts to deliver heated air to the shaft entrance. An automatic control system ensures the mixed temperature of heated air and natural intake remains between 2-2.5°C.

 

III. Technical Features

1. Stable Performance and Safe Operation

*Thanks to the highly automated and integrated air heating equipment, the outlet air temperature remains constant, ensuring the ventilation temperature stays within safe operating conditions. This avoids the issue of inadequate ventilation temperature at the shaft entrance, which often occurs in conventional air heater designs due to unstable heat media or degraded heat transfer components, thereby eliminating production safety hazards.

2. Automatic Operation for Unmanned Monitoring

*The air heating unit is equipped with an intelligent electric temperature control valve that precisely regulates the outlet air temperature by automatically adjusting steam flow. The computer control cabinet includes a fan frequency conversion adjustment device that, based on signals from mixed temperature sensors, automatically regulates the air output to keep the shaft ventilation temperature within the specified range.

3. Long Service Life with Consistent Performance

*Conventional air heaters often suffer from performance degradation after several years of use due to oxidation of heat transfer components or other factors, leading to operational failures. Similarly, hot air furnaces experience shorter lifespans due to oxidation and corrosion during idle periods. Although the heat exchange components of air heating units may also degrade under operating conditions, the automatic control system compensates by adjusting ventilation air volume, ensuring long-term safety of the ventilation system. Additionally, air heating units are corrosion-resistant, resulting in a longer service life. With high-stability components, the unit can operate for over 10 years.

4. Outstanding Energy Efficiency

*Due to automated intelligent control, energy consumption is strictly aligned with shaft ventilation requirements, reducing steam consumption to just 1/2 of that used by conventional air heaters.

*In traditional air heater systems, manual control often leads operators to set the shaft operating temperature at 5°C or higher to avoid risks from low temperatures. This results in energy consumption 2-3 times higher than the optimal operating condition of 2-2.5°C.

5. Highly Integrated Electromechanical Structure for Easy Installation, Maintenance, and Management

*The air heating unit integrates high-performance heat transfer components, fans, and an automated control system into a cohesive unit, simplifying installation, operation, and maintenance.

*Parameters such as intake air temperature, outlet air temperature, shaft temperature, and heat media temperature are displayed on the control cabinet’s LCD panel, providing clear visibility of all data. The system also supports remote data transmission via an R485 interface, enabling computer-based remote monitoring and facilitating management.

*Multiple units at each shaft share a single computer control cabinet, which automatically starts, shuts down, and alternates operation based on actual needs.