Study on gas permeation characteristics through heat-sealed flanges of vacuum insulation panels = 진공단열재의 열융착 테두리를 통한 가스 투과도 특성에 관한 연구

Not only outstanding insulation performance but also the extended service lifetime is required in vacuum insulation panels (VIPs). Thermal insulation performance of VIPs is degraded with time due to deterioration of the inner vacuum. The main causes are gas permeation and out-gassing in VIPs. Especially, gas permeation in the lateral through heat-sealed flanges has the largest effect. It is thus necessary to investigate the permeation characteristics of the envelope seal materials (linear low density polyethylene, LLDPE, and low density polyethylene, LDPE). A measurement apparatus using multiple radial permeation passages surrounded by the permeation gas jacket is designed to measure the gas permeation rate through the polymer films. The measurement shows reliable accuracy compared with other reported results. Further, to reduce gas permeation through the heat-seal, a novel method of employing metal wire the heat-sealed layers is also investigated in this study.
Advisors
Song, Tae-Horesearcher송태호researcher
Publisher
한국과학기술원
Issue Date
2011
Identifier
467584/325007  / 020093293
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 기계공학전공, 2011.2, [ viii, 52 p. ]

Keywords

Diffusion coefficient; Permeability; Gas permeaiton; Vacuum Insulation Panel; wire sealing; 와이어실링; 확산계수; 가스투과도; 가스 투과; 진공단열재

URI
http://hdl.handle.net/10203/45857
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=467584&flag=t
Appears in Collection
ME-Theses_Master(석사논문)
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