Industrial factory air conditioning systems can be classified according to different standards. Based on cooling method, they can be divided into air-cooled, water-cooled, and evaporative cooling types. Air-cooled systems use fans to draw in outdoor air for cooling, suitable for places with good air circulation, such as warehouses and logistics centers. They are easy to install but sensitive to ambient temperature. Water-cooled systems utilize a water circulation cooling system, suitable for places with high temperature control requirements, such as chemical workshops. They are energy efficient but require a water source and cooling tower. Evaporative cooling systems use the principle of water evaporation to absorb heat, suitable for high-temperature and high-humidity environments such as textile workshops or food processing workshops. They have low power consumption but require careful humidity control.
Based on function and application, they mainly include constant temperature and humidity air conditioners, cleanroom air conditioners, explosion-proof air conditioners, corrosion-resistant air conditioners, low-temperature/high-temperature air conditioners, and fresh air air conditioners. Constant temperature and humidity air conditioners are mainly used in laboratories, precision instrument manufacturing, and other scenarios requiring strict temperature and humidity control. They can automatically adjust parameters to maintain a stable environment. Cleanroom air conditioners are equipped with high-efficiency filters and sterilization devices, suitable for environments with high air cleanliness requirements, such as pharmaceuticals and electronics industries. Explosion-proof air conditioners are designed for flammable and explosive environments such as petroleum and chemical plants, employing explosion-proof materials and structures to ensure operational safety. Corrosion-resistant air conditioners are suitable for workshops with strong acids, alkalis, or corrosive environments, such as electrolytic aluminum workshops, and utilize special processes to enhance corrosion resistance. Low-temperature air conditioners are used in workshops requiring low-temperature preservation, such as meat processing, while high-temperature air conditioners are suitable for high-temperature environments such as metallurgical workshops, such as steel mills. Fresh air air conditioners primarily focus on ventilation and are suitable for industrial locations requiring air circulation, such as foundries.
Based on form and structure, air conditioners can be classified into split-type air conditioners, rooftop integrated units, and modular air conditioners. Split-type air conditioners include floor-standing and horizontal models, offering flexible installation and suitable for small to medium-sized workshops. Rooftop integrated units feature an integrated design, installed directly on the roof to save indoor space, and are suitable for large factories. Modular air conditioners can be flexibly combined and expanded to meet the needs of workshops of different sizes, balancing efficiency and flexibility.
Industrial plant central air conditioning systems mainly consist of refrigerant systems, water systems, and duct systems. The refrigerant system works by connecting multiple indoor units to an outdoor unit via copper pipes. The refrigerant directly exchanges heat with the air. It offers flexible zoned temperature control, high energy efficiency, no risk of leaks, and low maintenance costs, but has a higher initial investment. It is suitable for small to medium-sized factories or locations requiring independent temperature control for each area. The water system works by heating or chilling water from the outdoor unit and then circulating it to the indoor fan coil units. The water exchanges heat with the air a second time. It offers strong scalability, high comfort, and compatibility with underfloor heating, fresh air systems, etc., but requires regular maintenance of the water pipes. It is suitable for large workshops or complex factory structures with high comfort requirements. The duct system works by connecting a single outdoor unit to ducted indoor units for unified air supply. Its cost is relatively low, suitable for small workshops with limited budgets and low ceilings, but the air supply distance is short and temperature control accuracy is lower.
For factories with high ceilings, such as those with a 10-meter ceiling, the choice of air conditioning system needs to consider the system type, terminal equipment, and air supply method. System types include screw chillers, air-cooled modular units with fan coil units, or multi-split systems. Screw chillers offer high cooling capacity and precise temperature control per unit; air-cooled modular units with fan coil systems have lower initial investment and are easy to install and maintain; multi-split systems offer high energy efficiency and flexible control. Terminal equipment and air delivery methods can utilize jet-type air conditioning units with jet nozzles, swirl nozzles, or industrial ceiling fans with micro-wind systems to achieve long-distance, uniform air delivery and reduce vertical temperature differences.
Modern factories place special demands on central air conditioning systems, primarily including adapting to large spaces and high loads, requiring large air volumes, long-distance air delivery, and precise heat load calculation; coping with complex environmental conditions such as high temperatures, dust, and corrosive gases; achieving zoned control and flexibility for different workshops; achieving energy saving and efficient operation through variable frequency technology, waste heat recovery, and intelligent control; ensuring equipment reliability and ease of maintenance during continuous operation; and meeting special process requirements such as cleanliness, explosion-proof, and low-temperature operation.