Ningbo Longwell Electric Technology Co., Ltd. (LONGWELL) has launched its LWBE3G biomimetic EC fan platform for HVACR, air-handling units and data-center cooling. The company says the backward-curved impeller achieves 73–82% static efficiency and operates 4–6 dB(A) quieter than conventional fans.
According to LONGWELL, the impeller improves static efficiency by 5–8 percentage points and reduces energy use by 8–12% at equal airflow. The design also reduces high-frequency noise content by more than 50% and extends stall margin by 25–30%. Each design is validated through in-house whole-unit CFD analysis.
The EC drives support 0–10V, PWM, Modbus RTU and BACnet MS/TP control protocols and include 12 protection functions. The platform has an L10 bearing life of 60,000 hours at 40°C (104°F).
LONGWELL said the platform holds CE, UL 507, cUL and ETL certifications, as well as RoHS and REACH compliance, ISO 9001, ISO 14001, ISO 45001 and EN 50155 standards. Air performance is tested to AMCA 210 and ISO 5801, while CRP registration is in progress.
In a 2024 European AHU retrofit project, the LWBE3G450-188PT-09 delivered approximately 30% energy savings at 8,660 m³/h (about 5,098 cfm) and more than 2,000 Pa (about 8.0 in. w.g.). The LWBE3G560-188PT-01 delivered 16,039 m³/h (about 9,441 cfm), matching the airflow of the 16,000-class ebm-papst R3G560 for direct replacement without air-chamber modifications. LONGWELL lists lead times of one to three days for samples and 15–30 days for production.
“We are competing on impeller physics, not just price,” said Bruce Li, Chief Executive Officer of LONGWELL. “When the aerodynamics are this efficient and this quiet, switching becomes an easy engineering decision.”