ebm-papst Enhances EC Centrifugal Fans for HVAC Applications

HVAC systems, electronics cooling, and refrigeration applications require efficient and reliable air movement solutions capable of operating under demanding conditions. ebm‑papst has introduced the third generation of RadiPac EC centrifugal fans, featuring metal impellers and updated drive technology to address performance, safety, and integration requirements.

Metal Impeller Design Improves Fire Safety and Efficiency
The new RadiPac series incorporates high-performance metal impellers manufactured using advanced sheet metal forming and joining processes. Unlike conventional plastic designs, the metal construction does not melt or emit smoke under fire conditions, supporting compliance with stricter fire safety requirements.

The impellers feature a 3D-formed blade geometry with tight manufacturing tolerances, contributing to improved aerodynamic efficiency and structural strength. For applications requiring further optimisation, hybrid configurations combining a metal impeller with a plastic inlet nozzle are available to reduce air gaps and increase overall efficiency.

Wide Operating Range Supports Diverse HVAC Applications
The fan series is available in multiple sizes with impeller diameters ranging from 280 mm to 800 mm. It covers a power range from 170 W to 24 kW and delivers airflow rates of up to 50,000 m³/h at free discharge, with a pressure increase of approximately 2,500 Pa.

These specifications make the fans suitable for a variety of applications, including air handling units, precision air conditioning systems, cooling towers, and electronics cooling environments where stable airflow and pressure performance are critical.

Flexible Integration Simplifies System Upgrades
The RadiPac fans are designed for compatibility with existing systems, allowing straightforward replacement of older models. Mounting plates and peripheral components are engineered to align with previous installations, enabling reuse of inlet grilles and nozzles.

Both standard and compact versions are available, supporting installation in space-constrained environments while maintaining performance requirements. This modular approach reduces retrofit complexity and minimises system downtime during upgrades.

Intelligent Control and Monitoring Enhance Reliability
The integrated EC motor technology enables demand-driven operation without the use of rare-earth magnets, contributing to energy-efficient performance. The fans support control via 0–10 VDC or MODBUS RTU interfaces, allowing integration into building management and industrial control systems.

An automatic resonance detection feature is incorporated to protect the bearing system during startup and operation. By identifying and mitigating vibration-related stress, this function helps reduce mechanical wear and improve operational reliability.

Additional features include electromagnetic compatibility (EMC) filters, compliance with EU and UL standards, and the ability to integrate external sensors for advanced control strategies. Remote monitoring capabilities further support predictive maintenance and system optimisation.

Comparison with Conventional Centrifugal Fan Solutions
Traditional centrifugal fans often use plastic impellers and standard AC motors, which can limit efficiency and pose challenges in high-temperature or fire-sensitive environments.

In contrast, the RadiPac series combines EC motor technology with metal impeller construction, offering improved energy performance and enhanced safety characteristics. The integration of intelligent control features and compatibility with existing systems also supports more flexible deployment compared to conventional designs.

By combining advanced materials, efficient motor technology, and integrated control capabilities, the latest RadiPac fans address the evolving requirements of HVAC and refrigeration systems where energy efficiency, safety, and reliability are critical.

Edited by Natania Lyngdoh, Induportals Editor — Adapted by AI.

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