Technical Insights
Turning selection and maintenance experience into directly usable articles
Here we collect the selection methods, troubleshooting and industry observations accumulated by our engineering team on projects. Each article aims to land on actionable parameters and decision orders.
Latest
How to Calculate Heater Power: Working Back from Heat-Up Time to kW
The most common selection error is not a wrong formula — it is forgetting heat losses and start-up margin. This article uses two real examples to make heat-up power, holding power and margin factors clear.
Sep 18, 2026 · Houyi Technical Team
Sep 5, 2026
Flanged vs Screw Plug Heaters: Decide by Opening Size and Power
Both are immersion heaters — the difference is the interface, not the principle. How large is the opening, how much power, and how often does it need withdrawal? Those three questions usually settle it.
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Aug 21, 2026
Explosion-Proof Heater Selection: Area, Temperature Class and Material
Explosion protection is not a single label — it is a combination of area classification, gas group, temperature class and type of protection. Choose wrong and a certificate will not save site safety.
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Aug 6, 2026
Why Thermal Oil Systems Coke: Flow Velocity, Film Temperature and Oil Quality
In the same system, some oil stays clear for five years while others form a hard coke layer in two. The difference is usually not the heater itself, but flow velocity and film temperature.
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Jul 22, 2026
Duct Heater Temperature Uneven? Check Cross-Section Air Velocity First
Hot in the middle and cool at the edges, or elements glowing red in spots — most cases are not a power shortage but air distribution and element layout.
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Jul 8, 2026
Short Heating Element Life? Check These Five Installation Details
The same model lasts three years in one plant and three months in another. The difference is usually not quality but a few installation and operating details.
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