Technical Blog -- Cooling Guides & Application Notes | Herays
Technical Blog

Technical Resources & Industry Insights

Explore technical guides, application notes, product selection tutorials, and industry news for industrial cooling solutions.

Diagram showing the lifecycle stages of a DC axial fan from manufacturing through end-of-life recycling
DC Axial Fan

What Actually Happens to a DC Axial Fan at the End of Its Life?

Every fan eventually reaches the end of its service life, and what happens next -- landfill, proper recycling, or somewhere in between -- depends on decisions made well before the fan ever stopped spinning. A DC axial fan's environmental footprint depends on manufacturing compliance, material choices, and end-of-life handling together -- RoHS and REACH govern […]

Liang · · 10 min read
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Chart showing DC axial fan cooling capacity derating as a function of installation altitude
DC Axial Fan

How Altitude Quietly Derates Your DC Axial Fan’s Performance

A fan that cools perfectly at sea level can quietly underperform once it's installed somewhere genuinely high up -- not because anything about the fan changed, but because the air it's moving got thinner. Air density decreases with altitude, and since a fan moves air by volume rather than mass, thinner high-altitude air carries away […]

Liang · · 10 min read
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A vibration-tested DC axial fan mounted for automotive electronics cooling application
DC Axial Fan

DC Axial Fans for Automotive Electronics: Built for Heat, Shock, and EMC Compliance

A fan that works perfectly in a lab bench test can fail within months once it's actually bolted into a vehicle -- the temperature swings, constant vibration, and EMC requirements automotive electronics demand are a different category of problem entirely. DC axial fans for automotive electronics need a wider operating temperature range, real vibration and […]

Liang · · 10 min read
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