Engineering Case Studies

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

Cross-flow fan assembly with a metal tangential impeller and end-mounted motor
By longwell / April 8, 2026 / Engineering Case Studies

Cross Flow Fan Impeller Technical Drawing Specifications

Technical drawing and specification parameters for plastic and metal c...

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Axial fan with a circular wire guard and metal blades
By longwell / April 8, 2026 / Engineering Case Studies

EC Axial Fan Retrofit Engineering: Model LWEE500(20″)SP-405

Engineering specification for the LONGWELL LWEE500(20")SP-405 EC axial...

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Axial fan with a circular wire guard and metal blades
By longwell / April 3, 2026 / Engineering Case Studies

AC Axial Fan Specifications: LWAA2E200S-7MKW-28 and LWAA2E250S-5MKW-45

Technical specification output for 220V 60Hz AC axial fan models LWAA2...

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Engineering reference photo accompanying this project record
By longwell / April 3, 2026 / Engineering Case Studies

Roof Exhaust Fan Selection for Dual Operating Duty Points

LONGWELL engineering response for dual roof exhaust fan requirements, ...

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Circular inline duct fan with a white cylindrical housing
By longwell / April 2, 2026 / Engineering Case Studies

EC Mixed Flow Inline Duct Fan Specification: LWDE3G125-IS-01-00

Technical case on the LWDE3G125-IS-01-00 125mm EC mixed flow inline du...

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Backward-curved centrifugal fan with a metal impeller
By longwell / April 1, 2026 / Engineering Case Studies

115V AC Centrifugal Fan Customization with Round Capacitor Specs

LONGWELL engineering case for 115V AC backward curved centrifugal fans...

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Forward-curved centrifugal blower in a scroll housing
By longwell / April 1, 2026 / Engineering Case Studies

EC Forward Centrifugal Fan Specification for Model LWFE3G180-092DS-02-00

Technical specification document for LONGWELL LWFE3G180-092DS-02-00 EC...

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Illustration of a four-blade axial fan impeller with a central hub
By longwell / April 1, 2026 / Engineering Case Studies

1585mm Replacement Axial Impeller: Reference Dimensions and Part Definition

LONGWELL reviewed customer reference dimensions for a 1585 mm axial im...

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AC cross-flow fan assembly with a metal tangential impeller and end-mounted motor
By longwell / April 1, 2026 / Engineering Case Studies

Cross Flow Fan Design for Residential Split Air Conditioner Units

LONGWELL engineering evaluated cross flow fan requirements and prepare...

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Illustration of a compact centrifugal blower with a circular housing and short rectangular outlet
By longwell / March 30, 2026 / Engineering Case Studies

Radial Exhaust Fan Specifications for LONGWELL LWEA Series

LONGWELL evaluated customer requirements for 6-inch and 8-inch radial ...

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