
KTJ Silent Fresh Air Cabinet
Low-noise, vibration-isolated air supply for quiet areas like classrooms.

Engineering project
A technical school…
01 Background
A technical school with training workshops, teaching buildings and a large canteen. High-pressure cabinets and centrifugal fans continuously extract heavy metal dust, water-cooled fresh air units deliver cooled fresh air to classrooms, and backward-curved cabinets provide centralized canteen exhaust. The high-pressure cabinets suit long duct runs, the centrifugal fans stably extract dust, and the fresh air units improve classroom temperature and humidity. High-duty equipment handles simultaneous training, teaching and dining demands.
Fresh air, exhaust and fume-extraction equipment configured for classrooms, canteens and activity venues, based on on-site space and operating duty.
Project gallery



02 On-Site Problems
Closed, stuffy classrooms with poor airflow; concentrated canteen fume with odor spread; noise-sensitive campus areas; and some zones needing dust control.
03 Equipment Used

Low-noise, vibration-isolated air supply for quiet areas like classrooms.

Delivers cooled fresh air to relieve stuffiness and stale air.

High pressure for long canteen exhaust duct runs.

04 Our Solution
Zone the equipment by teaching area, canteen and venues, balancing airflow, operating noise and long-term maintenance.
05 Installation Process
Silent cabinets are placed in teaching-plant rooms, fresh-air units on rooftops or platforms, and canteen exhaust cabinets connected to hoods and ducting, all on vibration-isolation bases with zoned ducting for easy service.
06 Results
Continuous fresh air in teaching areas, markedly less stuffiness, smooth canteen exhaust without odor spread, and quiet operation that does not disturb teaching, clearly improving air quality and comfort.