| |
HuaYuan Ducts
|
Glass Wool Ducts
|
Galvanized Steel Ducts
|
Fiberglass Reinforced Plastic Ducts
|
|
Thermal Insulation
|
thermal conductivity¡Ü0.022w/m.k,
pre-insulation |
thermal conductivity¡Ü0.038w/m.k,
pre-insulation |
thermal conductivity:
0.05w/m.k |
thermal conductivity:
0.55 w/m.k |
|
Humidity Proofing
|
water absorption¡Ü2%,
water-proof |
water absorption¡Ü98% |
depends on insulated
materials |
water absorption¡Ü6.3% |
|
Hygiene
|
excellent resistance
to fungus growth, available for outdoor & cleanroom |
not available for humid
areas, cleanroom & outdoor |
not available for outdoor
installation |
no fibre peeling off |
|
Sound Deadening
|
Excellent level¡£ |
Good level¡£ |
require muffle &
relative accessories |
require muffle &
relative accessories¡£ |
|
Air Permeability
|
¡Ü2% |
¡Ü4% |
about 8% |
6-8% |
|
Weight
|
3.5kg/m, thickness25mm |
5kg/m,thickness25mm |
14kg/m |
23kg/m |
|
Overall Transfer
|
roughness: 0.24mm |
roughness: 0.24mm |
roughness:0.15mm,+ resis.from
muffle |
roughness:0.20mm,+ resis.from
muffle. |
|
Time Limit for a Project
|
20m per person per day |
15m per person per day |
¡Ü10m per person per
day |
¡Ü4m per person per day |
|
Lifespan
|
Over 20years |
10years |
after 3-6year, rusting |
after 6years, aging |
|
Appearance
|
excellent |
nice |
good |
good |
|
Requirement for Space
|
no space need for chimb
of flange, muffle and covering |
no space need for chimb
of flange, muffle and covering |
Space need for covering
5-10cm, chimb of flange 2-3cm |
Space need for chimb
of flange 2-3cm |
|
Compressive Strength
|
excellent
|
good |
good |
nice |
¡¡¡¡
