Fan Efficiency

Fan efficiency should be judged wire-to-air — from electrical input to useful air power — not from motor nameplate alone. Articles cover FEI metrics, part-load behaviour, annual energy calculation and the design factors separating premium EC platforms from commodity fans.

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By longwell / March 27, 2026 / Engineering Case Studies

Upgrading a Fan Coil Blower from 220V to 0-10V DC Control

Learn how we updated an AC cabinet to a dc fan coil blower. We cover s...

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By longwell / March 27, 2026 / Engineering Case Studies

Sizing a Direct Drive Centrifugal Blower for AHU Systems

We consolidated sheet metal parts into a direct drive centrifugal blow...

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longwell-wi-6929310984-project
By longwell / March 27, 2026 / Engineering Case Studies

Air Curtain Rotor: Custom 90mm Cross Flow Impeller

Review our design case study on a custom 90mm cross flow impeller. We ...

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longwell-lwaa8025sh-10-project
By longwell / March 26, 2026 / Engineering Case Studies

Equipment Cooling with an 80mm 220V AC Fan

Review the engineering choices behind specifying an 80mm 220v ac fan f...

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Industrial-Axial-Fan-Solutions-for-Manu
By longwell / March 24, 2026 / Technical Articles

Industrial Axial Fan Solutions for Manufacturing Plants: Case Studies and Efficiency Analysis

Industrial Axial Fan Solutions for Manufacturing Plants: Case Studies ...

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LONGWELL-Cross-Flow-Fans--Breaking-Airf
By longwell / March 20, 2026 / Technical Articles

LONGWELL Cross Flow Fans: Breaking Airflow Boundaries and Reshaping High-Efficiency Standards

LONGWELL Cross Flow Fans: Breaking Airflow Boundaries and Reshaping Hi...

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How-to-Calculate-Axial-Fan-Performance-
By longwell / March 2, 2026 / Technical Articles

How to Calculate Axial Fan Performance: CFM, Static Pressure, and Efficiency

How to Calculate Axial Fan Performance: CFM, Static Pressure, and Effi...

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2026-Industrial-Compliance--Efficiency-
By longwell / February 25, 2026 / Technical Articles

2026 Industrial Compliance: Efficiency Analysis of LONGWELL EC Centrifugal Fans in High Static Pressure Applications

2026 Industrial Compliance: Efficiency Analysis of LONGWELL EC Centrif...

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The-Balancing-Act-of-Silence-and-Effici
By longwell / January 27, 2026 / Technical Articles

The Balancing Act of Silence and Efficiency: Why the LONGWELL LWDE3G100-IS-01 is the Ultimate Ventilation Upgrade

The Balancing Act of Silence and Efficiency: Why the LONGWELL LWDE3G10...

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By longwell / January 20, 2026 / Events & Exhibitions

LONGWELL Makes a Grand Debut at the Turkey International Refrigeration Exhibition with Its Latest EC Ultra-High-Efficiency Motor Fan

Energy Efficiency Surpasses 92%, Leading the Green Revolution in HVACR...

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