Product Introduction
The Circular Swirl Diffuser is a high-induction air supply terminal specifically designed for commercial large-space HVAC systems. Manufactured from high-strength aluminum or galvanised steel, it generates a swirling airflow pattern through radially arranged guide vanes, offering high induction rates, rapid air velocity decay, and thorough air mixing. Unlike conventional diffusers, the swirling air stream quickly mixes with room air, achieving draft-free comfort at the occupied zone. Widely used in shopping mall atriums, airport terminals, theaters, sports venues, industrial halls, and other high-ceiling spaces — especially ideal for applications with large temperature differences between cooling and heating.
Applicable Locations
With its high airflow capacity, large temperature differential capability, and draft-free comfort, the Circular Swirl Diffuser is widely used in commercial buildings with large and high spaces. Typical applications include:
Product Advantages
1. High Induction Ratio – Rapid Air Mixing
With radially arranged guide vanes generating a swirling airflow, the diffuser creates a vortex beneath it, inducing room air to mix rapidly with supply air. Its induction ratio reaches 10-20 times that of conventional diffusers, causing velocity and temperature to decay quickly after discharge, delivering gentle and comfortable airflow at the occupied zone.
2. High Capacity & Large Temperature Differential – VAV Compatible
The swirl diffuser handles temperature differentials from -12K to +15K, maintaining stable air distribution in both cooling and heating modes. Even with significant airflow variations, the discharge pattern remains stable — making it particularly suitable for VAV systems. The high airflow capacity also reduces the number of terminals required.
3. Adjustable Air Pattern – Summer and Winter Versatility
Air direction can be adjusted by changing the guide vane orientation. Manual type: on-site adjustment as needed. Electric actuator type: remote central control. Thermal control type: built-in temperature sensor automatically adjusts the blade angle — horizontal discharge for cooling mode (supply air ≤17°C) and vertical discharge for heating mode (supply air ≥27°C), requiring no manual intervention or power supply. Ideal for spaces >3.8m in height, with vertical throw up to 20 meters.
4. Low Noise Operation – Suitable for High-Requirement Spaces
Optimised aerodynamic design ensures low noise levels even at high airflow rates, making it ideal for theaters, concert halls, hospital waiting areas, and other noise-sensitive environments.
5. Aluminum Construction – Aesthetic and Durable
Manufactured from high-strength aluminum or galvanised steel with powder-coated finish (standard RAL9010/9016 or custom colours). The clean circular design complements various ceiling styles while providing corrosion resistance for long-term use.
Technical Specifications
Working Principle & Selection Recommendations
Selection Recommendations:
Product Tags:
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Circular Swirl Diffuser for HVAC Systems with High Induction Ratio and Large Temperature Differential for Draft-Free Comfort Images
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