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Day: July 18, 2026

By longwell / July 18, 2026 / Engineering Case Studies

LWAA4D450S-5MEB-39-00 AC Axial Fan for Condenser Units

Case study on a 450mm AC axial fan delivering 7,004 m³/h for a commerc...

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Impeller reverse engineering of a 300mm 8-blade metal axial wheel

By longwell / July 18, 2026 / Engineering Case Studies

The Last Supplier Measured It With Calipers

They had tried this before with another supplier and got a drawing bac...

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LONGWELL EC motors

By longwell / July 18, 2026 / Technical Articles

EC Motor Efficiency Explained for HVAC Systems

Electric motors served as the driving components of HVAC systems. Thei...

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