Engineering Case Studies

Application requirements, product choices and engineering project stories from LONGWELL.

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By longwell / April 23, 2026 / Engineering Case Studies

250mm Hydraulic Radiator Cooling Fan | 415V

Read how we specified a 250mm hydraulic radiator cooling fan to meet 4...

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By longwell / April 23, 2026 / Engineering Case Studies

IP55 Cross Flow Fan: 1020 CFM for Harsh Outdoor Cooling

Review the engineering choices of sizing an IP55 cross flow fan to pus...

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By longwell / April 22, 2026 / Engineering Case Studies

Custom 158mm Housing for a 969 Pa Blower

Read how we modified a 24V DC centrifugal blower to hit a 158mm mounti...

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By longwell / April 21, 2026 / Engineering Case Studies

Cabinet Cooling 24V DC Centrifugal Fan and PWM Controller

Review the engineering constraints, trade-offs, and costs of specifyin...

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By longwell / April 21, 2026 / Engineering Case Studies

Negative Pressure Exhaust Fan: 38,000 m3/h Specification

Review a real project where we specified a negative pressure exhaust f...

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By longwell / April 21, 2026 / Engineering Case Studies

Custom 110V Fan Engineered for 6900 CFM and Extreme Heat

We engineered a custom 110V explosion proof axial fan for a US client....

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By longwell / April 21, 2026 / Engineering Case Studies

High-Pressure Make-Up Air: 300mm EC Circular Duct Fan

Learn how an EC circular duct fan delivers 747 Pa in a tight 255 mm sp...

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longwell-wi-6975592248-project
By longwell / April 21, 2026 / Engineering Case Studies

Transformer Cooling Fan Replacement for 220V Dry-Type Units

See how we built a 220V transformer cooling fan to replace old GFDD420...

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By longwell / April 20, 2026 / Engineering Case Studies

Commercial Air Handler EC Cross Flow Fan 640 m³/h

Learn how we sized an EC cross flow fan to deliver 640 m3/h at 1500 RP...

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By longwell / April 20, 2026 / Engineering Case Studies

Solving an EC centrifugal fan replacement with a 150W cap

Learn how we engineered an EC centrifugal fan replacement to match an ...

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