Cryogenic Thermal Insulation Systems

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$(Microsoft PowerPoint - Einf\374hrung Gespr\344chsanalyse)$

Research Testing Conclusion Well over 1000 cryogenic thermal performance tests of over 100 different thermal insulation systems have been produced by the CryoTestLab at NASA Kennedy Space Center Specific insulation systems must be optimized for best performance (such as lowest k-value and bulk density) under different vacuum levels All modes of heat transfer (radiation, solid conduction, gas conduction, and convection) must be addressed Aug 2005 CryoTestLab 58
Significance and Impact Invented new test equipment and methods for thermal performance characterization of insulation systems New standard for testing under actual-use, cryogenic-vacuum conditions Partnered in development of new products now on the market Aerogel composite blanket (Aspen <strong>Systems</strong>) Python vacuum-insulated piping (Chart-MVE) Aerogel beads for thermal insulation (Cabot) Aug 2005 CryoTestLab 59
Page 1 and 2:
Cryogenic Thermal Insulation System
Page 3 and 4:
INTRODUCTION
Page 5 and 6:
Two things about cryogenics Store
Page 7 and 8: Cryogenics on Earth and in space C
Page 9 and 10: Energy Efficiency on Earth Spacepo
Page 11 and 12: Energy Efficiency for Industry Ind
Page 13 and 14: PART 1 MATERIALS
Page 15 and 16: Basics about Materials Three Basic
Page 17 and 18: New Materials Cabot, aerogel beads
Page 19 and 20: 1. Thermal Conductivity Material t
Page 21 and 22: Representative k-values Material an
Page 23 and 24: Variation of mean heat flux and tot
Page 25 and 26: 3. Density Total installed density
Page 27 and 28: Aerogel Materials LIGHTER THAN AIR?
Page 29 and 30: Flexible aerogel composite blanket,
Page 31 and 32: Aerogel Composite Heat Transfer AER
Page 33 and 34: PART 2 TESTING
Page 35 and 36: Comparison of Insulation Test Metho
Page 37 and 38: Cryostat Test Methods Full tempera
Page 39 and 40: Cryostat-1
Page 41 and 42: Cryostat-4
Page 43 and 44: Performance Characterization of Per
Page 45 and 46: Temperatute (K) 350 300 250 200 150
Page 47 and 48: Flow (scm 3 /min) 500 400 300 200 1
Page 49 and 50: Layer temperature profiles as a fun
Page 51 and 52: Main Categories High Vacuum (HV)
Page 53: New Applications Aerogel blankets
Page 56 and 57: There is a hot side and a cold side
Page 60 and 61: Selected References Fesmire, J. E.
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Cryogenic Thermal Insulation Systems

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