Roxul Industrial Insulation Process - Manual (Page 34)

Insulation of piping
1.2.2 Insulation with pipe wraps (mats)
Pipe wraps (mats), such as ENERWRAP ® MA 960 NA
are the latest development in the insulation
business. ENERWRAP
® MA 960 NA is a stone wool
insulation wrap available with black mat or
reinforced foil facing. The flexible application
makes the product easy to cut and install. Pipe
wraps (mats) are ideal for installations involving
large diameter pipes and a high number of shaped
pieces such as elbows or T-joints.
ENERWRAP ® MA 960 NA can be applied up to
temperatures of 1200 °F (650 °C). Due to the high
compression resistance, pipe wraps (mats) can be
applied without additional spacers in many cases.
Consequently, the number of thermal bridges
which have a negative influence on the insulation,
is greatly reduced.
The result is considerably reduced installation
time and costs. The lack of spacers minimizes
heat loss and the risk of personal injuries caused
by hot spots on the cladding. Pipe wraps (mats)
are precisely tailored to the corresponding length
of the pipe circumference on site and are fastened
with clamps.
Insulation thicknesses to guarantee
protection against contact
The table below is an initial guide to help select
suitable insulation thicknesses for the guards. It is
based on the following boundary conditions:
Ambient Temperature 75 °F (25 °C)
Wind speed: 1.1 mph (0.5 m/s)
Cladding: Aluminum
Maximum surface temperature: 140 °F (60 °C)
Insulation: ProRox
® PS 960 NA
Pipe Diameter Temperature
NPS
(inch)
Nominal
diameter
Ø DN
Pipe
diameter
(mm)
<250 °F
(<120 °C)
300 °F
(150 °C)
400 °F
(200 °C)
500 °F
(260 °C)
600 °F
(315 °C)
inch inch inch inch inch
12 300 324 0.5" 1" 1.5" 2" 2.5"
16 400 406 1" 1" 1.5" 2" 3"
20 500 508 1" 1" 1.5" 2.5" 3"
The thicknesses mentioned above should be seen as an indication.
In the event of differing boundary conditions, please contact the ROXUL
® Technical Services Team. The thermo technical
engineering program "ROCKASSIST" (coming soon) or NAIMA 3E Plus ® can be used to design the insulation according to
the specific requirements.
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