| A) Forced Draught | B) Induced Draught |
|---|---|
| 1 - Tube Bundle | 6 - Fan |
| 2 - Header | 7 - Fan Ring |
| 3 - Nozzle | 8 - Fan Deck |
| 4 - Supporting Column | 9 - Drive Assembly |
| 5 - Plenum | 10 - Fan Guard |
| Typical Construction of Tube Bundles | |
|---|---|
| 1 | Tubesheet |
| 2 | Removable cover plate |
| 3 | Removable bonnet |
| 4 | Top and bottom plates |
| 5 | Tube |
| 6 | Pass partition |
| 7 | Gasket |
| 8 | Nozzle |
| 9 | Side frame |
| 10 | Tube spacer |
| 11 | Tube support cross-member |
| 12 | Tube keeper |
| 13 | Vent |
| 14 | Drain |
| 15 | Instrument connection |
| Fin Bonding Type | Maximum Process Temperature °C (°F) |
|---|---|
| Embedded fins | 400 (750) |
| Externally bonded (hot-dip galvanized steel fins) | 360 (680) |
| Extruded fins | 300 (570) |
| Footed fins (single L) & overlap footed fins (double L) | 130 (270) |
| Knurled footed fin, either single L or double L | 200 (390) |
| Externally Bonded (welded or brazed fins) | > 400 (750) (maximum should be negotiated) |
