高幟免保溫材PIRALU隔熱風管系統
GOLDEN FLAG PRE-INSULATED ALUMNIUM
DUCT BOARD
　
Characteristics of PIRALU：
Characteristics
Data
Remarks
Density 35 kg/m3 or 45 kg/m3 with a tolerance of +/-2 kg/m3
Compression Strength 1.5 kg/cm2  +/-0.5 kg/cm2
Coefficient of Heat  Conductivity 0.020 Kcal/m.k 　
Elastic Rigidity

PIRALU 20/35: 190,000N.mm2  

PIRALU 30/35: 570,000N.mm2 

PIRALU 20/45: 258,000N.mm2

 　
Water Absortion less than 0.5% in volume after 24 hours immersion in water
Coefficient of Leaner Thermal Expansion 40 x 10-6 m/m 　
Utilization Temperature -40℃ ~ +80℃ 　
Utilization Pressure

PIRALU 20/35: 1,000Pa 

PIRALU 30/35: 1,400Pa  

PIRALU 20/45: 1,100Pa

 positive or negative inside a duct
Air Speed 15 m/sec 　
Load Loss ruggedness:K=0.025 　
　
Comparison Chart of Thermal Insulators ：
Thermal Insulators Coefficient of Heat  Conductivity (λ)
PIR 0.020 W/m.k
Fiber Glass Wool 0.035 W/m.k
PE 0.038 W/m.k

　
　

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