DFN / GFN Square Counter-Flow FRP Cooling Tower

Specification

Tower type	Square counter-flow, induced draft, FRP shell, modular multi-cell
Cell arrangement	Single-row or double-row multi-cell; add cells instead of oversizing one
Fan drive	Variable-frequency motor or low-noise permanent-magnet direct drive
Control	Temperature-sensor driven, real-time fan adjustment
Pipe direction	Inlet and outlet rotatable by 90°, 180°, 270°
Water basin	L — no basin · DP — shallow basin · GP — deep basin, 400 mm effective depth
Design conditions	Standard 5 °C range (D / CD) · industrial 10–25 °C (G type)
Inlet water	Up to 60 °C (higher on request)
Water quality	Circulating turbidity ≤ 50 mg/L, short term ≤ 100 mg/L
Cold resistance	−50 °C; anti-icing required below −10 °C monthly average

Design notes

• Cells, not one big towerA failed cell is isolated and the plant keeps running at reduced capacity; the same cell size covers a 20 % expansion without a new tower.
• Direct drive where noise mattersThe permanent-magnet direct-drive option removes the belt and gearbox, cutting the dominant low-frequency noise and the maintenance interval with it.
• Three basin depthsNo basin for pit installations, shallow basin for slab mounting, 400 mm deep basin where pump suction needs the volume.
• Rotatable connectionsInlet and outlet can be turned 90°, 180° or 270° on site, which saves a header rework when the plant room layout changes.