Getting Low-E Glass Preheating Right (Even at 3 Meters Wide)
When you’re dealing with Low-E glass on a massive scale, you need a heat footprint that actually covers the whole surface. If your line is wider than 3 meters, you’ve probably realized that standard, off-the-shelf lamps just don’t do the job. That’s why we build custom, continuous infrared quartz heaters specifically for those wide-span baking tunnels. The struggle with long tubes Here’s the thing: once you push a quartz tube past the 3-meter mark, you run into a real headache with voltage drop. If you aren’t careful, the ends get hot while the middle stays lukewarm. No one wants a cold spot in the middle of their glass. We solve this by dialing in the wattage and voltage so the heat stays steady from end to end. We use high-purity quartz to handle the thermal shock, but a word of warning: these long tubes are delicate.**Make sure your mounting brackets are perfectly aligned.**If there’s too much mechanical stress when the tube expands from the heat, it’ll snap. Simple as that. What’s happening inside the lamp We fill our quartz designs with halogen to push more energy through the glass. We go with short-wave emission because it actually penetrates the Low-E coating, whereas long-wave options just bounce off. And because we’ve seen too many lamps burn out early, we obsess over the seal integrity at the end caps. If the gas leaks, the lamp dies. We make sure those seals are tight. Plus, we can customize the connectors to match however you’ve got your wiring set up in the field. Fitting them into your tunnel These units are designed to swap right into your old heating arrays. By using longer individual elements, you get rid of those annoying gaps between lamps. Fewer gaps mean fewer cold spots, which means your coating sticks better. It’s a much cleaner process. Just one tip: check your power supply. A 3-meter array pulls a lot of current. If your electrical panel isn’t ready for that peak load, you’re going to be tripping breakers all day.