GFNS₂ · 800–4,000 m³/h per cell
Torre cuadrada GFNS₂ de contraflujo con estructura de hormigón
La gama de nueve tamaños con estructura de hormigón: bastidor y relleno patentados, variador con ahorro anual del 40–52%.
- MotorVariable frequency; low-speed reverse in winter for de-icing
La GFNS₂ es la torre de gran volumen desarrollada con el Instituto n.º 4 del Ministerio de Maquinaria y la Universidad de Tsinghua. Células grandes para proyectos de refrigeración central.
Especificación
| 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 |
| Arrastre de gotas | HC150-45 eliminator, drift below 0.01 % at high speed |
Notas de diseño
- 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.
Opciones
- 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
Aplicaciones
- Thermal and nuclear power plants
- Petroleum refineries and petrochemical plants
- Steel and metallurgy plants
- Large manufacturing and industrial parks
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