GFNS₂ · 800–4,000 m³/h per cell

Torre quadrada GFNS₂ de contracorrente com estrutura de concreto

A faixa de nove tamanhos com estrutura de concreto: estrutura e enchimento patenteados, inversor com economia anual de 40–52%.

MotorVariable frequency; low-speed reverse in winter for de-icing

A GFNS₂ é a torre de grande volume desenvolvida com o Instituto nº 4 do Ministério de Máquinas e a Universidade de Tsinghua. Células grandes para projetos de refrigeração central.

Especificação

Single-cell capacity	800–4,000 m³/h, nine specifications
Main frame	Reinforced concrete, natural frequency 12 Hz, max amplitude 0.09 mm
Enclosure	Polyester FRP — light, high strength, corrosion and ageing resistant
Fan cylinder	Kinetic-energy-recovery type, FRP
Fan blade	Epoxy FRP, airfoil section, foam-filled core
Reducer	Horizontal, oil-lubricated, oil-temperature and vibration alarm
Motor	Variable frequency; low-speed reverse in winter for de-icing
Fill	Modified PVC trapezoidal wave, −35 °C to 65 °C, flame retardant, to NDGJ88-89
Water distribution	Pipe type, three-splash Type II nozzles, 1.5 m free head
Perda por arraste	HC150-45 eliminator, drift below 0.01 % at high speed

Notas de projeto

Patent 88215994.1 — energy-saving FRP towerThe VFD drive delivers 40–52 % annual energy saving against a fixed-speed tower of the same duty.
Patent 93201355.4 — beam frameCantilever multi-span continuous-beam RC frame with air-inlet columns moved inward 1–2.5 m, cutting vortex losses and lowering tower height by 0.5–0.9 m.
Patent 91216967.2 — trapezoidal fill23 mm wave, 30 mm pitch, fill height raised from 1.0 m to 1.5 m — more heat transfer in the same plan area.
Stable under windA 12 Hz natural frequency and 0.09 mm amplitude keep the structure out of resonance without extra stiffening.

Opções

Multi-cell arrangement for very large circulating systems
Stainless or FRP water distribution headers
Winter de-icing and basin heating control
Structural drawings stamped for local building approval

Aplicações

Thermal and nuclear power plants
Petroleum refineries and petrochemical plants
Steel and metallurgy plants
Large manufacturing and industrial parks

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