Views: 0 Author: Site Editor Publish Time: 2025-07-30 Origin: Site
In printing factories, Air Handling Units (AHUs) play a critical role in maintaining optimal environmental conditions, ensuring product quality, and safeguarding worker health.
Core Functions of AHU in Printing Factories
Air Quality Control
VOC & Odor Removal: Printing processes generate volatile organic compounds (VOCs) from solvents and inks. AHUs equipped with activated carbon filters (e.g., Honeywell’s APED series ) efficiently adsorb these harmful gases, while HEPA filters (99.99% efficiency for ≥0.3μm particles ) capture fine particulate matter.
Dust & Fume Filtration: High-efficiency filtration stages (pre-filter → medium-filter → HEPA) prevent ink particles and paper dust from accumulating, reducing equipment wear and respiratory risks.
Temperature & Humidity Regulation
Precision Climate Control: Maintaining stable humidity (40–60% RH) prevents paper warping and ink smudging. AHUs integrate humidifiers (e.g., ultrasonic or steam types ) and cooling coils to balance moisture levels.
Heat Recovery: Energy-efficient designs use heat exchangers (e.g., heat pipe heat exchanger ) to recover waste heat from exhaust air, preheating incoming fresh air and reducing energy consumption by up to 70% .
Ventilation & Safety
Explosion-Proof Design: Solvent-heavy environments require AHUs with explosion-proof components (e.g., motors, fans certified to GB/T 3836.1-2021 ). For example, the BKF-50-Ex wall-mounted AC ensures safe operation in volatile solvent settings.
Negative Pressure Control: Localized exhaust systems (e.g., near printing presses) prevent hazardous gas buildup, while pressure sensors interlock with AHU operation to ensure continuous airflow .
