Multi-Layer Insulation (MLI) stands as the leading heat protection material and super insulation technology for cryogenic applications. At Frako-Term, we specialize in delivering superior MLI solutions, precisely engineered to operate efficiently in temperature ranges from -150°C to -269°C. This makes our insulation method the premier for high-vacuum cryogenic systems ensuring excellent insulation performance even in extreme conditions.
Multi-Layer Insulation is a sophisticated thermal protection system and heat barrier solution consisting of alternating layers of reflective materials and low-conductivity spacer material.
This unique construction creates multiple radiation shields that significantly reduce heat transfer through radiation, conduction, and convection, effectively preventing heat gain.
Each layer of MLI contributes to the overall resistance, making it exponentially more effective than basic insulation or single-layer insulation types. This cryogenic insulation approach ensures maximum protection against heat loss.
Our insulation achieves exceptional performance under vacuum conditions, with laboratory-tested heat conductivity as low as 0.03 mW/mK.
| Parameter |
MLI Insulation (Frako-Term) |
Evacuated Perlite | Foam Insulation (PIR/PUR) |
|---|---|---|---|
| Thermal Conductivity (λ) |
~0.03 mW/mK
Excellent
|
~2.0 mW/mK
Good
|
~20 mW/mK
Poor
|
| Required Thickness |
16 mm
Minimal
|
100 mm
High
|
250 mm
Very High
|
| System Weight |
Very Low
|
Very High
|
Low
|
| Installation Requirements |
Requires High Vacuum
|
Requires Vacuum
|
No Vacuum Required
|
| Vibration Resistance |
High
|
Poor (powder settling)
|
Good
|
Independent research by Cracow University of Technology demonstrates our insulation's superiority over different insulation methods. At identical pressure levels, MLI consistently outperforms perlite insulation, requiring only 16 mm insulation thickness compared to perlite's 100 mm requirement. This six-fold reduction in total thickness translates to significant space and weight savings, highlighting our superior insulation capabilities.
Designed for temperatures up to -269 °C
Designed for temperatures: -170°C to -269°C
Temperature range: -170°C to -269°C
Temperature range: up to -269°C
Frako-Term offers Multi-Layer Insulation in multiple configurations for various insulation solutions:
Our insulation products undergo rigorous testing to ensure consistent insulating quality:
Our insulation is essential for cryogenic storage in LNG storage tanks, cryostats, and vacuum-insulated vessels. For LNG applications (P=1 bar abs, T=111 K), properly installed Multi-Layer Insulation with 40 layers achieves heat flux as low as 0.3-0.4 W/m² under 10⁻³ Pa vacuum conditions. This exceptional performance allows our clients to safely and efficiently transport and store cryogenic gas with minimal boil-off losses.
The space industry relies heavily on our advanced insulation for satellite temperature control, rocket fuel tanks, and deep space instrumentation. The high vacuum environment of space provides ideal conditions for its performance, where it protects sensitive equipment from the damaging effects of cryogenic temperatures and solar heat gain.This is critical for spacecraft operations.
Multi-Layer Insulation is crucial for superconducting cryogenic systems, including MRI machines, particle accelerators, and quantum computing equipment. These applications require ultra-stable temperatures, making its exceptional stability essential for proper operation and minimizing unwanted heating.
Mobile cryogenic systems, including LNG transport vessels and cryogenic trailers, benefit from its lightweight design and superior insulation properties. The reduced weight compared to traditional insulation types improves efficient transport while maintaining performance for storage and transportation of liquefied gases like cryogenic hydrogen and liquid oxygen. Our cryogenic pipe insulation also plays a key role here.
The multi-layer structure of MLI creates multiple heat barriers that work together to minimize heat transfer through all three mechanisms: radiation, conduction, and convection. In high vacuum environments, this insulation achieves heat conductivity values impossible with bulk insulation materials. This prevents heat gain and controls vapor.
The optimal number of layers depends on the specific application and insulation thickness requirements. Common configurations range from 10 to 60 layers, with 40 layers being typical for many cryogenic storage applications. More layers provide better insulation performance but with diminishing returns on total thickness.
While our insulation can function in atmospheric conditions, its performance is significantly reduced. For optimal heat protection, MLI should be used in vacuum environments of 10⁻³ Pa or better, within the designated vacuum space.
Our insulation must be stored in dry conditions to prevent moisture absorption by the spacer material. During installation, rubber gloves should be worn to prevent contamination from skin oils, which can degrade insulating effectiveness and affect material properties.
When properly installed and maintained, our products can provide decades of reliable service. The cryogenic insulation materials are stable under cryogenic conditions and do not degrade significantly over time when protected from contamination and physical damage, ensuring safe and efficient long-term operation.
Yes, this insulation is excellent for mobile cryogenic applications due to its lightweight construction and vibration resistance. It's commonly used in LNG transport vehicles, mobile laboratories, and spacecraft applications, ensuring efficient transport and effective temperature maintenance. This includes robust cryogenic pipe insulation and tank insulation.
MLI requires minimal maintenance when properly installed. Regular vacuum system checks and monitoring for physical damage are the primary maintenance requirements. Damaged sections should be repaired promptly to maintain its effectiveness and integrity of the cryogenic insulation system.
