Key Functions

• Suspended particles filtration
• Gaseous molecular contaminant filtration
• Maintaining positive indoor pressure
• Control of temperature and relative humidity

Operating Principle

When the absolute humidity of outside air is higher than the target humidity of the clean room, pre-cooling coils in the system are used to reduce the dew point of the outside air. Pre-heating coils then heat the air flow to a suitable temperature to ensure that air being channeled to the clean room is maintained at the strict temperature and humidity requirements set by the clean room once it is mixed with the sensible heat air flow from the equipment. Finally, high-efficiency filters are fitted at the outlets to filter out over 99.7% of particles and effectively remove all types of AMC in order to meet the ultra-high cleanliness standard of the clean room.

MAU must process large volumes of outside air so it accounts for the bulk of the energy consumption within the clean room circulation system. Improvement of its energy efficiency is therefore of utmost importance.

YESIANG MAU Solution

Yesiang offers professional solutions that balance high filtration performance with energy efficiency and carbon reduction based on the nature of MAU operations. Key features include: 

• Wide selection of filters: Conventional V-type single-header and box-type chemical filters are available for all type of MAU design specifications on demand.
• Patented cylindrical filtration system: The proprietary cylindrical filtration system developed by Yesiang offers higher filtration efficiency with lower pressure loss to effectively reduce energy consumption and improve contaminant removal performance.
• Internationally certified energy-saving filter media: Yesiang chemical cylinder filters have passed ISO 14067:2018 carbon footprint verification and BS 8001:2017 circular economy certification. Carbon emissions are 25% lower compared to disposable filter media to help customers realize their energy-efficiency and carbon reduction targets.