The project is located in Sanya City, Hainan Province, which belongs to a typical tropical maritime climate with high temperatures and humidity throughout the year. The average temperature in summer reaches 28-32 ℃, and in winter it remains above 20 ℃. The annual average humidity is about 80%. The humid and hot environment poses a serious challenge to the maintenance of precision aviation equipment, especially in preventing metal parts from rusting and ensuring the stability of electronic systems. Temperature and humidity control of the internal environment of the workshop is particularly important.

This workshop is the specialized maintenance center for Southern Airlines helicopters, responsible for key maintenance tasks such as aircraft inspection, engine maintenance, avionics system debugging, and rotor balance calibration. These processes have strict requirements for environmental cleanliness, temperature and humidity, and air circulation: constant temperature and humidity can avoid measurement errors caused by thermal expansion and contraction of precision instruments, and good ventilation can effectively discharge welding fumes and chemical volatile gases, ensuring personnel health and job safety.

The workshop building is a heat-insulating color steel shed structure, measuring 110 meters long, 45 meters wide, and 16 meters high, with an open and square interior. Double layered skylights are installed on the surrounding walls, and the roof is made of sandwich insulated color steel tiles. Although it has certain insulation performance, it still faces severe challenges in cooling and ventilation under the dual effects of high temperature radiation and internal equipment heat dissipation in Hainan.

The Ruifeng Environmental Protection Refrigeration Technology Team has innovatively designed a "wall mounted jet industrial air conditioning system" solution, taking into account geographical climate, building structure, and maintenance operation characteristics

1. Tailored to local conditions: Select high-efficiency dehumidification and rapid cooling models for high heat and high humidity environments;

2. Space optimization: wall mounted installation method is adopted to fully release the working space on the ground and ensure smooth flow of equipment and personnel;

3. Remote air supply: equipped with multiple jet air conditioners to achieve directional strong wind transmission, effectively covering a length of 100 meters and eliminating temperature and humidity stratification;

4. Intelligent operation and maintenance: The system supports partition control and remote monitoring, which facilitates daily maintenance and energy consumption management.

A total of 32 jet industrial air conditioners were installed in the project, arranged in layers along the side walls of the workshop to form a composite airflow organization. After operation, the overall temperature of the workshop is stably controlled at 26 ± 2 ℃, the humidity is kept below 60%, and the air circulation is uniform without dead corners. Even in the hot season, the maintenance personnel's work area still maintains a comfortable feeling, and the equipment maintenance accuracy and work efficiency have significantly improved, which has been highly recognized by the logistics management department of China Southern Airlines: "The plan is professional, the implementation is efficient, and fully meets the strict requirements of the aviation maintenance environment

This cooperation is the first time that Ruifeng Environmental Protection Refrigeration has served the aviation industry, marking an important breakthrough in our high standard industrial environment temperature control field. The "High Space Jet Temperature Control Solution" formed by this project has mature experience in promoting to similar scenarios, including aerospace manufacturing plants, high-speed rail maintenance bases, large logistics and warehousing centers, intelligent manufacturing workshops, etc., providing energy-saving and reliable space environment system support for more industries.