SalvoR
Mechanical
- Jan 26, 2023
- 2
Hello everyone,
I am trying to figure out a heat transfer problem.
I am dealing with a 250-micron fiber optic strand that needs to heat to 300 degrees before entering an extruder. The strand goes into a preheater at 72 degrees, gets multi-wrapped (10 wraps) around sheaves, and then exits the preheater into the extruder. The preheater uses two Leister 61S heaters for heat and they both get their air blown by Leister's own airpak blower. We can assume 13 meter per second air speed out of each heater.
The fiber optic strand itself is moving 400 meters per minute. The height of the heating zone is 25 inches (.635 meters). This translates to roughly 250 inches (6.5 meters) of fiber strand in the active heat zone. At 400 meters per minute, 6.5 meters of strand is exposed to heat for about 1 second.
If I set the preheater temp to 500 degrees, what would the product's temperature be exiting the preheater?
Can anyone help me figure this out?
TIA!
I am trying to figure out a heat transfer problem.
I am dealing with a 250-micron fiber optic strand that needs to heat to 300 degrees before entering an extruder. The strand goes into a preheater at 72 degrees, gets multi-wrapped (10 wraps) around sheaves, and then exits the preheater into the extruder. The preheater uses two Leister 61S heaters for heat and they both get their air blown by Leister's own airpak blower. We can assume 13 meter per second air speed out of each heater.
The fiber optic strand itself is moving 400 meters per minute. The height of the heating zone is 25 inches (.635 meters). This translates to roughly 250 inches (6.5 meters) of fiber strand in the active heat zone. At 400 meters per minute, 6.5 meters of strand is exposed to heat for about 1 second.
If I set the preheater temp to 500 degrees, what would the product's temperature be exiting the preheater?
Can anyone help me figure this out?
TIA!
