vacuum-type insulation

vacuum-type insulation

[′vak·yəm ¦tīp in·sə′lā·shən]
(chemical engineering)
Highly reflective double-wall structure with high vacuum between the walls; used as insulation for cryogenic systems; Dewar flasks have vacuum-type insulation.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.