Fan Performance Curves

A fan curve plots pressure against airflow at fixed speed; where it crosses the system resistance curve is the real operating point. Learn to read total vs static pressure curves, spot stall regions, apply fan laws for speed changes and understand why catalogue and field numbers differ.

LONGWELL greenhouse ventilation fan
By longwell / July 8, 2026 / News

How to Choose Greenhouse Ventilation Fan?

In modern facility agriculture, the stability of the greenhouse enviro...

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10 common ec fan specification mistakes
By longwell / July 1, 2026 / News

EC Fan Specifications: 10 Common Mistakes to Avoid

Selecting the wrong EC fan can cost your countdown and excess noise. E...

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Plug Fan vs Housed Centrifugal Fan: Compare the Installed Boundary
By longwell / May 28, 2026 / News

Plug Fan vs Housed Centrifugal Fan: Compare the Installed Boundary

Compare plug and housed centrifugal fans at the same airflow-pressure ...

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LONGWELL-Encyclopedia--Duct-Fans--Defin
By longwell / March 16, 2026 / News

LONGWELL Encyclopedia: Duct Fans –Definition, Functions, and Complete Application Guide

LONGWELL Encyclopedia: Duct Fans –Definition, Functions, and Complete ...

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In-Depth-Guide--Standard-Installation-P
By longwell / March 14, 2026 / News

In-Depth Guide: Standard Installation Process, Commissioning Specifications, and On-Site Troubleshooting for Cross-Flow Fans

In-Depth Guide: Standard Installation Process, Commissioning Specifica...

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Understanding Centrifugal Fan Curves: How to Read Performance Charts
By longwell / March 10, 2026 / News

Understanding Centrifugal Fan Curves: How to Read Performance Charts

A centrifugal fan curve is a map of measured operating points, not a p...

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-strong-Plug-Fans-for-HVAC-Systems-vs-T
By longwell / December 16, 2025 / News

Plug Fans for HVAC Systems vs Traditional Fans Which Performs Better

Plug Fans for HVAC Systems vs Traditional Fans Which Performs Better Y...

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-strong-How-to-Choose-the-Best-Industri
By longwell / December 4, 2025 / News

How to Choose the Best Industrial Axial Fan

How to Choose the Best Industrial Axial Fan Industrial Axial Fan Choos...

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Industrial-Axial-Fans-for-Warehouse-Ven
By longwell / November 28, 2025 / News

Industrial Axial Fans for Warehouse Ventilation: A Practical Guide to Cooling

Industrial Axial Fans for Warehouse Ventilation: A Practical Guide to ...

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-strong-Is-the-Longwell-Duct-Fan-Worth-
By longwell / November 15, 2025 / News

Is the Longwell Duct Fan Worth It? Users Share Their Experience

Is the Longwell Duct Fan Worth It? Users Share Their Experience You wa...

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