This document describes Dekoron-Unitherm's 6200 Cryotube Series pre-insulated cryogenic piping. It uses aerogel insulation which reduces outer diameter by 50-70% compared to traditional PIR foam, improving piping installation. The aerogel provides better insulation with lower heat gain and moisture transmission. Thermal modeling shows the Cryotube piping performs similarly to thicker PIR foam piping with lower costs, easier installation, and maintenance-free operation.

1. Dekoron-Unitherm’s
6200 Cryotube Series
The Next Generation in
Pre-insulated Cryogenic Piping

2. Dekoron-Unitherm
• Part of the $7 billion Marmon Group which is a Div. Of
Berkshire Hathaway
• Over 50 years history as the world leader in the design &
manufacture of pre-insulated tubing and small bore piping
• Pre-insulated tubing and pipe are our only business

3. Our 6200 Cryotube Series
• Through the use of proprietary
aerogel insulation materials,
Dekoron Unitherm’s 6200
Cryotube system requires on
average 70% less space than
traditional PIR foam pre-insulated
pipe. This reduction
in OD improves
• Loading in pipe racks
• Relieves congestion in
equipment skids
• Reduces the size of wall
penetrations

4. 6200 Cryotube Series
Pre-insulated Piping
Features & Benefits when
compared to PIR foam
• Reduced
• OD – 50% to 70%
• Weight - 30% to 50%
• Lower
• Heat gain
• ASTM E-96 water vapor
transmission rate – 0.00perm
• ASTM E-84 flame spread &
smoke generation – Class “A”
• Hydrophobic insulation

5. 6200 Cryotube Series
Pre-insulated Piping
Offers major Advantages over
X-50 PIR Foam & Field
Fabrication for 1/2” thru 3”
cryogenic pipe sizes
• Available in stainless & copper in
coils and sticks
• Lower Installed Cost
• by reducing waste
• by greatly reducing field labor
• Pre-Engineered System
• Has more efficient heat transfer
• Has consistent thermal characteristics
• Improved Scheduling
• By reducing craft interference
• By greatly reducing or eliminating the
need for an insulation contractor
• Maintenance Free
50
45
40
35
30
25
20
15
10
5
0
Cryo-Tube
Urethane Foam

6. Heat Gain & Condensation
Control Verification
• A 20 foot section of 6200 Cryotube was
designed & fabricated using 3E-Plus
Thermal Modeling Software published
by NAIMA.
• Thermal properties of the Cryogel Z
insulation system are as follows.
Mean
Temperature °F
K factor
BTU/hr. / ft. sq.
-328 0.0681
-238 0.0793
-148 0.0852
-58 0.0894
31 0.0956
122 0.1076
212 0.1291

7. Heat Gain & Condensation
Test Results
• Test results were within
1.8°F of the values
predicted by 3-E Plus,
thereby validating this
modeling program for
calculating Heat Gain &
Condensation control of the
6200 Cryotube system
• The heat loss efficiency of
1” of 6200 Cryotube is equal
to 4.43” of urethane foam
• 3-E Plus is available free from
the North American Insulation
Manufacturers Association at
• www.pipeinsulation.org

8. Comparison
Based on 3-E Plus Software
6200 Cryotube System PIR Foam System
• Tube Size: 1” copper
• Process Temperature: -300F
• Ambient Temperature: 76F
• Wind: 0 mph
• Relative Humidity: 65%
• Insulation Thickness: 4.43” Urethane Foam C-591, T-VI
• Jacket: Cast FR PVC
• Tube Size: 1” copper
• Process Temperature: -300F
• Ambient Temperature: 76F
• Wind: 0 mph
• Relative Humidity: 65%
• Insulation Thickness: 1” Cryogel
• Jacket: Extruded FR PVC
Surface
Temperature
Heat Gain
BTU/hr/ft
Efficiency
%
-300 °F 278.30
62.8 °F 16.12 94.21%
Surface
Temperature
Heat Gain
BTU/hr/ft
Efficiency
%
-300 °F 278.30
71.3°F 16.18 94.19%

9. What Is An Aerogel Insulation
• Aerogels are nanoporous solids invented in
the 1930’s
• Aerogels are created when silica is gelled in a solvent
• When the solvent is removed, what remains is “puffed-up
sand”, with up to 99% porosity
• Nanoporosity slows heat and mass transport, providing record-low
thermal conductivity
• Twin innovations moved aerogels from lab
curiosity to high-volume industrial product
• Supercritical CO2 extraction process reduces cycle time from
months to hours
• Casting the wet gel into a fibrous batting provides mechanical
integrity
Pores are 1/10,000th
the diameter of a
human hair
Aerogels are often
called “frozen smoke”

10. Aerogel’s Have the Lowest k-Value of Any Industrial
Insulation
-400 -200 0 200 400 600 800 1000 1200
200
150
100
50
Mineral Wool
Pipe &
Board
Perlite
Calsil
Temperature (°F)
-200 -100 0 100 200 300 400 500 600
Temperature (°C)
Thermal Conductivity (mW/m-K)
Pyrogel XT
Cryogel Z PUR/PIR
Mineral Wool
Blanket
Thermal Conductivity (Btu-in/hr-ft2-°F)
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
Cellular
glass

11. Resists the Enemies of Traditional Insulation
Water, Heat, and Abuse
Water Repellant
Aerogel's are hydrophobic, they will not wick or
allow water to pass through it
Damage Tolerant
Cryogel and Pyrogel easily withstand most
impact or compressive loading events (e.g.,
footfalls, tool strike), and will spring back to the
original performance even at loads
> 100 psi. Further, because there is no brittle
failure mechanism (its a flexible blanket),
damage remains local and will not propagate.
Thermally Stable
Aerogel’s products do not use organic
binders, so will not crumble or sag in hot
service.

12. Heath and Safety Aspects of
Aerogel Insulation
• Aerogels are an amorphous (non-crystalline)
silica with 97% of particles larger than 45mm
• Only the pores are nano-scale (~0.01 mm)
• Aerogel particles are much larger
• Amorphous silica has been studied by
OSHA, EPA, and the OECD, concluding:
• “Demonstrated lack of toxicity.
• “Is not expected to pose a carcinogenic risk.”
• “Silica’s are inert when ingested, and unlikely to be absorbed
through the skin.”
• “No concerns for human health.”
• Typical dust loading in fab-shop is <5 mg/m3
• OSHA limit for amorphous silica is 80 mg/m3
Aerogel (amorphous silica)
Crystalline silica

13. Accessories
• Unitherm offers a
complete line of
accessories
including
• End Seal Kits
• Splice Kits
• Patch Kits
• Fitting Kits
Fitting Cover Kits
Splice Kit
End Seal Kit