Abstract
In designing a cryogenic storage system with low heat leak, a cautions consideration must be paid on the selection of a support structure and materials connecting the inner vessel with the outer vessel. In view of the structural and thermal requirements on a cryogenic storage system, support materials must exhibit high tensile yield strength accompanied by low thermal conductivity, and these properties must be retained even at cryogenic temperatures. From these points of view, measurements were carried out on mechanical and thermal properties of candidate materials for cryogenic structural support down to liquid helium temperature. The experimental results show that in metallic materials, Titanium Alloys displayed a large ratio of tensile yield strength to thermal conductivity. On the other hand, non metallic materials such as glass- or carbon-fiber reinforced plastics (GFRP, CFRP) exhibited higher strength/conductivity ratios than metallic materials. One particular result is that CFRP showed the extra low thermal conductivity in the temperature range 77K to 4.2K. On the contrary, in the temperature over 77K, GFRP showed lower thermal conductivity than CFRP. Thus, the combined use of GFRP and CFRP will be recommended for cryogenic structural support system.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan)
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
