Conveners
C1OrF - Thermal Insulation Applications and Measurements
- Sergey Koshelev (Fermilab)
- Shannon White (Aspen Aerogels, Inc.)
Mr
Kyeong Ho Kim
(Korea Institute of Science and Technology), Dr
Sarng Woo Karng
(Korea Institute of Science and Technology), Ms
Soojin Shin
(Korea Institute of Science and Technology)
6/29/15, 4:00 PM
CEC-14 - Thermal Insulation Systems
Contributed Oral Presentation
Many researchers have studied performance of cryogenic thermal insulation materials with various cryogenic liquids. However, there are not many cases under liquid hydrogen environment. KIST has been operating a 1 L/hr scale hydrogen liquefaction and storage facility since 2013. The KIST liquid hydrogen system can liquefy hydrogen gas to liquid, store and transfer to a dedicated storage...
Thomas Richter
(Karlsruhe Institute of Technology (KIT))
6/29/15, 4:15 PM
CEC-14 - Thermal Insulation Systems
Contributed Oral Presentation
Complex, non-developable surfaces require a tailored multi-layer insulation (MLI) for lowest heat loads. The most experiments showing the heat transfer through MLI are performed under quasi-ideal conditions determining the principle insulation quality. But the surface to be insulated in real cryostats implies feed-throughs and other non-developable surface parts. The thermal performance of MLI...
Dr
QuanSheng Shu
(Retired Senior Scientist)
6/29/15, 4:30 PM
CEC-14 - Thermal Insulation Systems
Contributed Oral Presentation
The power consumption in large scale superconducting devices is due to the refrigeration system and the cryogenic devices used in special applications often require an extremely long cryogen holding time. All cryogenic devices and superconducting instruments, regardless of size, small, large or huge, are all working at cryogenic temperature. To economically maintain the device at its operating...
Wesley Johnson
6/29/15, 4:45 PM
CEC-14 - Thermal Insulation Systems
Contributed Oral Presentation
Once on orbit, high performing insulation systems for cryogenic systems need just as good radiation (optical) properties as conduction properties. This requires the use of radiation shields with low conductivity spacers in between. By varying the height and cross-sectional area of the spacers between the radiation shields, the relative radiation and conduction heat transfers can be...
Jared Sass
(NASA Kennedy Space Center)
6/29/15, 5:00 PM
CEC-02 - Large-Scale Systems, Facilities, and Testing
Contributed Oral Presentation
Culminating years of extensive research and development, field demonstrations have proven glass bubbles to be a superior insulation material for spherical liquid hydrogen storage tanks. Six years of operational history has been accumulated on a spherical 218,000-liter liquid hydrogen (LH2) storage tank with glass bubbles insulation in the evacuated annulus. Over this period of time the tank...
Jonathan Demko
(LeTourneau University)
6/29/15, 5:15 PM
CEC-14 - Thermal Insulation Systems
Contributed Oral Presentation
Standards for thermal insulation used in applications between ambient and low temperatures, below 100 K, require test data under relevant conditions and by different laboratories to develop data sets for the proper comparisons of materials. This critically important technology is needed to provide reliable data and methodologies for industrial energy efficiency and energy conservation. Under...
Dr
Ronald Ross
(Jet Propulsion Laboratory)
6/29/15, 5:30 PM
CEC-14 - Thermal Insulation Systems
Contributed Oral Presentation
Multilayer Insulation (MLI) uses stacks of low-emittance metalized sheets combined with low-conduction spacer features to greatly reduce the heat transfer to cryogenic applications from higher temperature surrounds. However, as the hot-side temperature decreases from room temperature to cryogenic temperatures, the level of radiant heat transfer drops as the forth power of the temperature,...
Wesley Johnson
6/29/15, 5:45 PM
CEC-14 - Thermal Insulation Systems
Contributed Oral Presentation
Early comprehensive testing of cryogenic multilayer insulation (MLI) focused on the use of silk netting as a spacer material. Silk netting was used for multiple test campaigns designed to provide baseline thermal performance estimates for cryogenic insulation systems. As more focus was put on larger systems, the cost of silk netting became a deterrent and most aerospace insulation firms...
