High-efficiency extruded bimetal tubes for a food drying line, where hygiene and stable performance mattered more than first cost.
Requirement
The dryer manufacturer needed air heaters that could run continuously at 180 °C with a clean air stream, and could be cleaned between product changeovers. The tube surface had to be free of solder and flux.
Specification
| Item | Specification |
|---|---|
| Tube | Extruded bimetal, A179 base, aluminium fin |
| Fin | 10 mm height, 3.0 mm pitch |
| Quantity | 1,200 m |
| Surface | Degreased, end-capped, no coating |
Outcome
The extruded construction gave the highest surface area in the available duct space, and the absence of filler metal met the customer’s hygiene requirement. The tubes have run for multiple seasons without measurable performance loss.
Discuss a food-grade heating duty
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