Cited by 50Aerogels and thermal insulationSpacecraft and Cryogenic TechnologiesSuperconducting Materials and Applications

AEROGEL BLANKET INSULATION MATERIALS FOR CRYOGENIC APPLICATIONS

Open access
Coffman, B. E., Fesmire, J. E., White, S., Gould, G., Augustynowicz, S., Weisend, J. G.·2010·AIP Conference Proceedings

Abstract

Aerogel blanket materials for use in thermal insulation systems are now commercially available and implemented by industry.Prototype aerogel blanket materials were presented at the Cryogenic Engineering Conference in 1997 and by 2004 had progressed to full commercial production by Aspen Aerogels.Today, this new technology material is providing superior energy efficiencies and enabling new design approaches for more cost-effective cryogenic systems.Aerogel processing technology and methods are continuing to improve, offering a tailorable array of product formulations for many different thermal and environmental requirements.Many different varieties and combinations of aerogel blankets have been characterized using insulation test cryostats at the Cryogenics Test Laboratory of NASA Kennedy Space Center.Detailed thermal conductivity data for a select group of materials are presented for engineering use.Heat transfer evaluations for the entire vacuum pressure range, including ambient conditions, are given.Examples of current cryogenic applications of aerogel blanket insulation are also given.

AI snapshot

Written from the paper’s full text.

TL;DR

Aerogel blanket insulation materials were characterized for cryogenic applications using NASA KSC insulation test cryostats, with over 90 tests of 9 different aerogel blanket systems. The results show low apparent thermal conductivity across vacuum levels and support use in cryogenic piping, tanks, and other systems.

Key findings

Over 90 tests of 9 aerogel blanket systems showed k-values rising only moderately in soft vacuum; for example, A111 Pyrogel ranged from 1.70 mW/m-K at 0.01 millitorr to 13.34 mW/m-K at 760,000 millitorr, while A112 Cryogel ranged from 1.55 to 11.28 mW/m-K over the same CVP range. Systems including MLI showed improved performance in high vacuum, with A113 Cryogel + MLI reaching 0.26 mW/m-K at 1 millitorr. Ambient-pressure maximum thermal conductivity data in TABLE 1 include Spaceloft 14.0 mW/m-K at 144 K and 17.0 mW/m-K at 297 K, Cryogel 13.4 and 17.0 mW/m-K at those temperatures, Pyrogel 20.0 mW/m-K at 297 K and 31.0 mW/m-K at 533 K, and Pyrogel XT 21.0 mW/m-K at 297 K and 43.3 mW/m-K at 644 K. Aerogel blanket development began in 1993 through an SBIR program, progressed from 75-mm diameter specimens to near 1 m² sizes by 1995, produced a field installation kit of about 20 m² of 13 mm thick blankets in 1996, and led to Aspen Aerogels, Inc. in 2001 with over a hundredfold cost reduction.

Methods

The primary instruments were Cryostat-100 and its predecessor Cryostat-1, liquid nitrogen boil-off calorimeters providing absolute apparent thermal conductivity data; Cryostat-100 used a cylindrical cold mass of 167 mm by 1026 mm including guarded ends, with cold-boundary temperature 78 K, warm-boundary temperature 293 K, and ΔT 216 K. Cryostat-4, a flat plate comparative apparatus, was used for smaller specimens and calibrated using in-house standard reference data from Cryostat-100. Specimens were typically heated above 340 K and evacuated to high vacuum, with a warm-vacuum pressure typically 1 millitorr, then tested over cold-vacuum pressures from high vacuum (below 1×10⁻⁴ torr) through soft vacuum (~1 torr) to no vacuum (760 torr), using nitrogen as the residual gas; a typical test series consisted of a minimum of eight CVP levels.

Limitations

The paper does not state explicit limitations. Evident from the text: the detailed thermal conductivity data are presented for a select group of materials, while many different aerogel blanket materials and combinations were tested; no measurement uncertainty or error analysis is reported; and several referenced figures are available only as captions, so some plotted data are not numerically recoverable from the text.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.1063/1.3422458

Cites

7 of 7 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Claims the paper makes

  • Findingreasoning

    The two insulation systems including MLI blankets show improved performance in the high-vacuum range.

    “The two insulation systems, including MLI blankets, show improved performance in the high-vacuum range where radiation heat transfer becomes a dominant factor.”
    Quote in the paperSubstantial claim
  • Findingreasoning

    The apparent thermal conductivity (k-value) of aerogel blanket insulation materials rises only moderately in the soft-vacuum range.

    “The k-values rise only moderately in the soft-vacuum range as the gas conduction that begins to dominate the heat transfer is suppressed by the nanoporous aerogel material.”
    Quote in the paperSubstantial claim
  • Findingnone given

    Cryogel has a decreased insulation thickness requirement in comparison to conventional insulations for cryogenic pipes.

    “These benefits include a decreased insulation thickness requirement in comparison to conventional insulations (FIGURE 5a)”
    Quote in the paperSubstantial claim
    • Rests on an assumption: The test temperatures used (78 K to 293 K) are representative of actual cryogenic use conditions.
  • Interpretationnone given

    In the high-vacuum range, radiation heat transfer becomes a dominant factor.

    “The two insulation systems, including MLI blankets, show improved performance in the high-vacuum range where radiation heat transfer becomes a dominant factor.”
    Quote in the paperNot a substantial claim
  • Interpretationnone given

    Cryogel allows fast installation, even during operating conditions, for cryogenic pipes.

    “fast installation, even during operating conditions (FIGURE 5b)”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: The test temperatures used (78 K to 293 K) are representative of actual cryogenic use conditions.
  • Classified as probably not a substantial claim. 10
  • May combine two claims. 1
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Study design and conductnone given

    The Cryostat-100 apparatus is capable of extremely stable boil-off rates over a very wide range of heat flux.

    “This new apparatus is capable of extremely stable boil-off rates over a very wide range of heat flux.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S2 (checkable).

    Interpretationreasoning

    Aerogel blanket technology enables new possibilities for long-life, low-maintenance thermal insulation systems in both industry and consumer products.

    “Developed over the last 15 years, this technology enables new possibilities for long-life, low-maintenance thermal insulation systems in both industry and consumer products.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: The tested aerogel blanket materials and test conditions are representative of actual cryogenic applications.
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Interpretationnone given

    Cryogel offers a simplified insulation system design (no contraction joints) for cryogenic pipes.

    “a simplified insulation system design (i.e., no contraction joints)”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: The test temperatures used (78 K to 293 K) are representative of actual cryogenic use conditions.
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductnone given

    Over 90 tests of 9 different aerogel blanket systems were performed.

    “Over 90 tests of 9 different aerogel blanket systems were performed.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Interpretationown data

    The measured temperature profiles provide a way to perform an estimated computation analysis of the intermediate thermal conductivity, depending on the number of layers making up the total test specimen.

    “The measured temperature profiles provide a way to perform an estimated computation analysis of the intermediate thermal conductivity ( ), depending on the number of layers making up the total test specimen.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductnone given

    Cryostat-4 was calibrated using in-house standard reference data from Cryostat-100.

    “Calibration is accomplished using in-house standard reference data from Cryostat-100.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim.

    Interpretationreasoning

    The thermal performance benefits of aerogel blankets are clear.

    “The thermal performance benefits of aerogel blankets are clear.”
    Quote in the paperSubstantial claim
    • Rests on an assumption: The tested aerogel blanket materials and test conditions are representative of actual cryogenic applications.
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Interpretationnone given

    Cryogel is useful for insulating difficult areas such as between flanged sections of vacuum-jacketed piping.

    “Cryogel is also useful for insulating difficult areas such as between flanged sections of vacuum-jacketed piping.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: The test temperatures used (78 K to 293 K) are representative of actual cryogenic use conditions.
  • May combine two claims.

    Interpretationown data

    In the soft-vacuum range, gas conduction begins to dominate heat transfer but is suppressed by the nanoporous aerogel material.

    “The k-values rise only moderately in the soft-vacuum range as the gas conduction that begins to dominate the heat transfer is suppressed by the nanoporous aerogel material.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Interpretationnone given

    Ambient temperature data for thermal conductivity (lambda) combined with cryogenic data for k-value can allow some first approximations of lambda as a function of temperature or extrapolation to another set of boundary temperatures of interest.

    “Ambient temperature data for thermal conductivity (lambda) combined with cryogenic data for k-value can allow some first approximations of lambda as a function of temperature or extrapolation to another set of boundary temperatures of interest.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductnone given

    Many different aerogel blanket materials have been tested at the Cryogenics Test Laboratory (CTL) of NASA KSC using a family of insulation test cryostats.

    “Many different aerogel blanket materials have been tested at the Cryogenics Test Laboratory (CTL) of NASA KSC using a family of insulation test cryostats.”
    Quote in the paperNot a substantial claim
11 of 11
  • The paper relies on this without support.

    The tested aerogel blanket materials and test conditions are representative of actual cryogenic applications.

    “Characterization of the materials under the appropriate boundary temperatures and environmental conditions as they will be used in the field is essential to implementation of aerogels over conventional insulation materials.”
  • The paper relies on this without support.

    The test temperatures used (78 K to 293 K) are representative of actual cryogenic use conditions.

    “Test temperatures are as follows: cold-boundary temperature (CBT) 78 K, warm-boundary temperature (WBT) 293 K, and temperature difference ( T) 216 K.”
2 of 2

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

Each contradiction between two passages listed here was confirmed by an independent check.

  • Production projections use incompatible area equivalents

    Minor

    Tens of thousands of square meters correspond to hundreds of thousands of square feet, not tens of millions of square feet. The two parenthetical projections differ by roughly a factor of 100.

1 of 1

Cites

Flagged first, then by citations

Research works printed but not linked: 1

  1. Begag, R. and Fesmire, J.E., "Nonflammable, hydrophobic aerogel composites for cryogenic applications," in Thermal Conductivity 29, DEStech Publications, Lancaster, PN, 2008, pp. 323-333.

Cited by

Sorted by citations

Authors
Coffman, B. E., Fesmire, J. E., White, S., Gould, G., Augustynowicz, S., & Weisend, J. G.
Affiliations
  • Kennedy Space Center (US)
  • Aspen Aerogels (United States) (US)
Venue
AIP Conference Proceedings
Publisher
AIP
Published
2010
Pages
913-920
ISSN
0094-243X (ISSN-L)
OpenAlex
W1971794945
Cited by
50
References
7
Citations by year
2026: 3 · 2025: 1 · 2024: 2 · 2023: 7 · 2022: 5 · 2021: 2 · 2020: 1 · 2019: 3 · 2018: 1 · 2017: 6 · 2016: 4 · 2015: 6 · 2014: 3 · 2013: 1 · 2012: 4
FWCI
13.83
Type
conference paper
Language
en
Open access
Locations
  • AIP conference proceedings (publishedVersion)
  • NASA STI Repository (National Aeronautics and Space Administration) (submittedVersion)
Topics
  • Physical Sciences › Chemistry › Spectroscopy › Aerogels and thermal insulation
  • Physical Sciences › Engineering › Aerospace Engineering › Spacecraft and Cryogenic Technologies
  • Physical Sciences › Engineering › Biomedical Engineering › Superconducting Materials and Applications
Keywords
aerogel blankets, cryogenic insulation, thermal conductivity, heat transfer, vacuum insulation, cryogenic systems, energy efficiency

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Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Claims read by deepseek-v4.1-flash under definition version 3 (extract-v3) on 2026-11-03.

Classified by jev-1.13-20260917 (gold-guideline-v0.2) on 2026-11-03.

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