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About Double Glass IGU Glass

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Double Panle and Triple Panel IGU Glass

Double Panle and Triple Panel IGU Glass
Jul 03, 2025

What is Insulated Glass?

Insulated Glass Units (IGUs) consist of two or three glass panes separated by spacers to form sealed cavities filled with dry air or inert gases (e.g., argon). The gas layers block heat transfer, significantly improving thermal and acoustic insulation.

 

Key Components:

  • Glass panes (Float/Tempered/Low-E)
  • Spacers (Aluminum/Stainless Steel/Thermal Break)
  • Desiccant (Molecular Sieve)
  • Sealant (Butyl + Polysulfide)

 

Double Panel Glass and Triple Panel Glass

 

Property  Double Panle (Single Cavity) Triple Panel ( Double Cavity)
Heat Flow Path Glass→Gas→Glass (1 barrier) Glass→Gas→Glass→Gas→Glass (2 barriers)
U-value Higher (≈1.8 W/(m²·K)) Lower (≈1.1 W/(m²·K)) -40%
Sound Insulation Mass Law: 2 panes + gas damping Mass Law: 3 panes + dual damping + resonance shift
Anti-Condensation  ΔT>15℃ ΔT>25℃
Weight 5+12A+5: ≈25kg/m² 5+12A+5+12A+5: ≈38kg/m²

 

Summary

   Double Panle (Single Cavity) Triple Panel ( Double Cavity)
Glass Layer 2 3
Cavities 1 2
Optimal Climate Temperate Extreme Cold/Heat
Acoustic Weakness Low-frequency (<250Hz) Very low-frequency (<125Hz)
Enhancement Low-E + Argon Dual Low-E + Krypton

 

 

 

 

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