Finned Channel Strip Heaters
Finned channel strip heaters are highly efficient heating cells that are utilized in many air heating applications like driers, duct heaters, curing ovens, dehumidifiers and shrink tunnels. These heaters are designed to function in forced as well as natural convection air heating applications.
The core of these heaters are channel strip heaters that have 0.375” x 1.5” cross section. In order to make their exposed surface area relatively larger, finned channel strip heaters utilize 2” x 1.375” aluminized steel fins (Stainless Steel is optional) that are designed in such a way that they grip the channel heater housing and dissipate heat efficiently.
Finned channel strip heaters are made with slotted mounting tabs.
- HOT PLATES
- SPACE HEATING
- SEALING BARS
- LOAD BANK RESISTORS
|Max Sheath Temperature||12000 F|
other voltages are available; consult the factory
|120V or 240V|
|Watt density in still air|
|up to 2500 F||20 watt/in2|
|2500 F - 5000 F||15 watt/in2|
|5000 F - 7500 F||10 watt/in2|
Watt density 10ft/sec moving air
for other air/velocity combinations; consult the factory
|up to 2000 F||38 watt/in2|
|2000 F-3500 F||30 watt/in2|
|3500 F-5000 F||20 watt/in2|
|Wattage tolerance||+5%, -10|
- Channel strip heaters expand when energized and thus tend to get detached from the surfaces they are mounted on. To prevent this, it is essential to allow room for expansion by tightening firmly the mounting screw on one end (usually terminal side) and leaving the other side slightly loose. When relatively long strip heaters are used, it is good practice to use clamps to hold strip heaters firmly attached to application surfaces.
- While tightening post terminals, a backup wrench should be used to hold the counter-nut to ensure tightness and prevent terminals from damage.
- When a finned channel strip heater is placed in an air stream, the air flow should be perpendicular to the length of the heater and parallel to its width (1.5" side).
- Channel strip heaters (with or without fins) that operate at a potential difference of more than 300 V between their line voltage and the ground, should be isolated from the surface of an application by secondary isolating ceramic bushings. Bucan offers insulators that are adequate for dia. 1/4" screws. To be able to use these ceramic insulators, strip heaters should have 1/2" x 5/8" mounting slots (factory pre-punched upon request).