Dealing with the Headache of 2-Meter+ Infrared Heaters for Glass Tunnels
Most infrared lamps are built to be easy to ship. They’re short, manageable, and fit in a standard box. But if you’re running a massive glass tunnel kiln, those short segments are a nightmare. You end up with “cold spots” where the heat just doesn’t hit, and in the glass world, that’s a recipe for disaster. That’s why we build continuous units that push past the 2-meter mark. The struggle with length and power You can’t just stretch a quartz tube and call it a day. If you do, the ends will run cooler than the middle because of the voltage drop. It’s a common trap. We spend a lot of time tweaking the wattage to make sure the heat is dead-even across the entire 2000mm+ span. Why? Because if one spot is cooler than the rest, your glass warps. And nobody wants to throw away a whole batch because of a few cold inches. Keeping things sturdy Here is the thing: long tubes are fragile. If they aren’t supported just right, they start to sag under their own weight. To stop that, we use heavy-wall quartz glass. It’s beefier and can handle the stress of a tunnel kiln. We design these to sit side-by-side, creating a literal wall of heat. But a word of warning: your mounting brackets have to be spot on. If the tube bows even a little, your radiation patterns get wonky, and your glass surface pays the price. The reality of the installation On the electrical side, we wire these for industrial grids. We usually stick with high-voltage setups just to keep the current from getting out of hand. But you’ve got to be careful here. A 2-meter element puts a massive amount of heat on your kiln’s chassis. You can’t just slide these into a standard frame and hope for the best. Check your cooling system. If you don’t have enough airflow to pull the ambient heat away from the lamp ends, you’ll fry your connectors. It’s as simple as that. Weak ventilation equals a shorter lamp life, and that’s a cost you don’t want.