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NCT 74

Advanced Fill Technologies

High-Efficiency/Low-Clog Film Fill

  • Special surface textures
  • Larger water passages
  • Anti-fouling coatings

Zero Drift Fills

  • Integrated drift elimination
  • Reduced plume potential

Fire-Retardant Fills

  • Special PVC formulations
  • Required for certain locations/industries

Installation Considerations

  • Module size: Typically 2′ × 4′ or 1m × 1m modules
  • Support systems: Grids, beams, or cables
  • Stacking pattern: Staggered for optimal flow
  • Expansion/contraction: Allowance for thermal movement

Economic Impact

Fill represents 15-25% of tower cost but determines 60-80% of cooling performance

  • Good fill selection: Can reduce tower size by 30-40%
  • Poor maintenance: Can increase energy consumption by 15-25%

Industry Trends

  1. Higher surface area densities (up to 250 m²/m³)
  2. Sustainable materials (recyclable PVC)
  3. Digital monitoring for fill condition
  4. Anti-microbial coatings
  5. Modular designs for easier replacement