Roxul Industrial Insulation Process - Manual (Page 48)

Insulation of piping
1.2.11 tracing
When media are transported over long distances,
in particular, the media inside the piping can spoil,
set or be at risk from frost in the winter. Insulation
can reduce heat losses and postpone the moment
at which the installation freezes. Insulation alone,
however, cannot indefinitely prevent the
installation from freezing. Installing additional
tracing may be necessary between the object and
the insulation.
A distinction is made between pipe tracing and
electrical tracing. In pipe tracing systems, a
heating pipe is fitted parallel and close to the
media pipe. Steam, warm water or thermal oil
flows through the tracing pipes as a heat transfer
medium. Electrical tracing consists of cables
mounted onto the pipes. These cables heat the
pipes
Traced pipes can be insulated with pipe sections
or wraps (mats). Ensure that no insulation
occupies the space between the tracing and the
pipe; otherwise the heat transfer will be
hampered. Pipes are therefore often wrapped in
aluminum foil. If pipe sections are used, select a
correspondingly larger internal diameter of the
pipe section. With vertical piping, sealing the end
of each pipe section with loose ROXUL
® insulation
is recommended to prevent convection (chimney
effect).
The diagrams on the right show various design
options.
1. Pipe - 2. Insulation: ProRox ® Pipe Sections -
3. Electrical tracing - 4. Aluminum foil - 5. Cladding
1. Pipe - 2. Insulation: ENERWRAP ® MA 960 NA or Wired
Mats - 3. Tracing - 4. Aluminum foil -
5. Cladding
1. Pipe - 2. Insulation: ProRox ® Pipe Sections -
3. Tracing - 4. Binding tape - 5. Cladding
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