Gold reflector plate for furnace

Fri, 24 Jul 2026 10:38:30 +0800

Getting Your Heat Right in Long Infrared Tunnels

If you’re running a glass tunnel kiln longer than two meters, you already know the struggle. You can’t just keep throwing more lamps at the problem and hope for the best. Usually, you end up with these annoying cold spots or heat that just leaks out of the sides, leaving you with a temperature profile that’s all over the place. We’ve found a better way to handle this: continuous lamp arrays paired with gold reflector plates. Why gold? Most people use aluminum reflectors, but here’s the thing—aluminum absorbs too much energy. It’s a waste. We use gold-coated reflectors because they’re incredible at bouncing infrared radiation right back down onto the glass. Instead of the heat soaking into the kiln’s frame, it goes exactly where it belongs. When you’re dealing with a massive 2-meter setup, this is what keeps the ends of the tunnel from lagging behind the center. You get a steady, tight temperature window from start to finish. No guesswork. The trick to long arrays Wiring a line of heaters this long isn’t just “plug and play.” If you don’t get the voltage drop exactly right, you’ll end up with the first lamp burning out while the last one barely glows. We spend a lot of time crunching the numbers on wattage and voltage so the power is balanced. Plus, by using a continuous layout instead of those clunky modular systems, we get rid of the gaps. That means no more “zebra stripes” on your glass. Just a smooth, even finish. The trade-off (and how to fix it) Now, there is a catch. High-density arrays put out a ton of waste heat. Even with gold reflectors pushing the energy down, your kiln housing is still going to take a beating. You’ve got to make sure your cooling blowers and ventilation can actually handle the kilowatt load. If the airflow is too weak, those quartz tubes will overheat and pop way sooner than they should. It’s a simple fix, but a critical one. Whether you need a custom build for a specific footprint or just a drop-in replacement to fix an old system, we’ve got you covered. Just tell us how long your tunnel is and what temperature you’re aiming for. We’ll handle the math on the lamp density and geometry for you.

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Gold reflector plate for furnace

Getting Your Heat Right in Long Infrared Tunnels