2. Advantages of the Solution

Advantages of the AHU-DX Unit by Dunham-Bush:

• Superior air quality control: Capable of managing multiple air parameters such as temperature, humidity, and cleanliness. It can be equipped with humidifiers, electric or steam heating coils to suit specific requirements.
• Modular integration: Supports multiple filtration layers (coarse, fine, HEPA) to remove dust, bacteria, and pollutants, improving indoor air quality.
• High energy efficiency: Compatible with energy-saving modules such as heat wheels, plate heat exchangers (PHE), and coil loops to recover heat from exhaust air and enhance dehumidification efficiency.
• Cleanroom applications: Designed to meet cleanroom standards for industries such as healthcare, pharmaceuticals, and high-tech manufacturing.
• Flexible design: Wide airflow and static pressure range adaptable to various projects. Customizable AHU construction materials to withstand harsh environments, such as marine corrosion or high-acid conditions.
• Easy maintenance: Modular design facilitates inspection and component replacement.

Advantages of the CDU-VRF Unit by Mitsubishi Electric:

• Inverter compressor technology: CDU-VRF units incorporate inverter-driven compressors, significantly reducing energy consumption by adjusting capacity based on actual thermal load.
• Compact and flexible design: Enables long-distance and high-altitude connections to AHU-DX units. The compact outdoor unit is particularly beneficial for high-rise buildings or space-constrained installations.
• High durability in extreme environments: Capable of stable operation in ambient temperatures up to 52°C.

System Synchronization

Some concerns arise regarding the compatibility and operational control challenges when integrating AHU-DX units with CDU-VRF units from different manufacturers. However, Mitsubishi Electric has developed and refined the LEV-KIT integration module, ensuring precise and stable synchronization between AHU-DX units and CDU-VRF systems. Multiple projects have successfully deployed this solution, demonstrating its reliability and effectiveness.

3. Limitations of the Solution

The initial investment cost for integrating AHU-DX with CDU-VRF is higher compared to conventional VRF systems using standard indoor units (IU).

This integration requires an experienced technical team for proper design and installation.

4. Applications of the Solution

The integrated AHU-DX by Dunham-Bush and CDU-VRF by Mitsubishi Electric is an ideal solution for:

Hospitals and surgical rooms: Demanding high air quality standards for temperature, humidity, and cleanliness control.

Manufacturing facilities and cleanrooms: Designed to handle large airflow volumes with flexibility in airflow and static pressure control, meeting strict requirements for air change rates (ACH), temperature, humidity, cleanliness, and noise levels.

Luxury hotels and premium office spaces: Ensures efficient fresh air handling while maintaining low noise levels and high energy efficiency.

Shopping malls and auditoriums: Large spaces with high occupancy, requiring substantial fresh air supply and energy recovery solutions.

5. Typical Project Implementing the AHU-DX and CDU-VRF Integrated Solution

Some images from the Kusumi Hospital Project at Tokyo Medical University Vietnam, located in Ecopark Urban Area, Xuan Quan Commune, Van Giang District, Hung Yen Province.