A Novel Rigid Vacuum Insulation Panel: Vacuum Insulation Sandwich

2012 ◽  
Vol 430-432 ◽  
pp. 741-745
Author(s):  
Juan Zhang ◽  
Zhao Feng Chen ◽  
Jie Ming Zhou ◽  
Bin Bin Li ◽  
Zhou Chen
Keyword(s):  
High Performance ◽  
Aluminum Film ◽  
Core Material ◽  
Atmospheric Gases ◽  
Detailed Structure ◽  
Rigid Barrier ◽  
Practical Applications ◽  
Vacuum Insulation ◽  
Gas Tight ◽  
Vacuum Insulation Panel

VIP (Vacuum insulation panel), as a high performance insulation component, combine with limited thickness, have recently been introduced to numerous energy conservation applications. VIP consists of a highly insulating core material and a gas tight barrier envelope which is generally composed of plastic film and aluminum film. When the envelope is stainless steel sheet, VIP is called VIS (vacuum insulation sandwich). Because of this hardly permeable rigid barrier, VIS presents more fantastic properties such as resistance against external mechanical loads and penetration of atmospheric gases and water vapor. Consequently, the service life of VIS is significantly longer than that of VIP. Detailed structure and some practical applications of VIS elements are also reviewed in this paper.

scholarly journals Preparation and Characterization of a Type of Green Vacuum Insulation Panel Prepared with Straw Core Material

Materials ◽  
2020 ◽  
Vol 13 (20) ◽  
pp. 4604
Author(s):  
Lu Wang ◽  
Yong Yang ◽  
Zhaofeng Chen ◽  
Yiyou Hong ◽  
Zhou Chen ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Moisture Content ◽  
High Performance ◽  
Core Material ◽  
Insulation Material ◽  
Total Thermal Conductivity ◽  
Vacuum Insulation ◽  
Inner Pressure ◽  
Compression Characteristics ◽  
Vacuum Insulation Panel

The Vacuum Insulation Panel (VIP), regarded as the most promising high-performance thermal insulation material, still has application limitations because of its high cost. In this paper, VIPs using natural straw as the core material are prepared. The fiber saturation point (FSP) is important in order to determine the optimum for the use of renewable straw materials as a potential VIP core. The microstructure of straw core material, together with the relationship between the moisture content, the diametral compression strength, and the thermal conductivity of as-prepared straw VIPs are investigated. Compression characteristics of straw core material and heat insulation mechanism within the straw VIP envelope enclosure are analyzed. Total thermal conductivity of a straw VIP is sensitive to both the inner pressure and the moisture content of straw core material. The optimum drying process for straw VIPs is heating the straw core material at a temperature of 120 ℃ for 60 min, with its center-of-panel value being about 3.8 mW/(m·K).

scholarly journals Thermal insulation properties of green vacuum insulation panel using wood fiber as core material

BioResources ◽  
2019 ◽  
Vol 14 (2) ◽  
pp. 3339-3351 ◽  
Author(s):  
Baowen Wang ◽  
Zhihui Li ◽  
Xinglai Qi ◽  
Nairong Chen ◽  
Qinzhi Zeng ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Bulk Density ◽  
Thermal Insulation ◽  
Wood Fiber ◽  
Core Material ◽  
High Porosity ◽  
Total Thermal Conductivity ◽  
Wood Fibers ◽  
Vacuum Insulation ◽  
Vacuum Insulation Panel

Wood fibers were prepared as core materials for a vacuum insulation panel (VIP) via a dry molding process. The morphology of the wood fibers and the microstructure, pore structure, transmittance, and thermal conductivity of the wood fiber VIP were tested. The results showed that the wood fibers had excellent thermal insulation properties and formed a porous structure by interweaving with one another. The optimum bulk density that led to a low-cost and highly thermally efficient wood fiber VIP was 180 kg/m3 to 200 kg/m3. The bulk density of the wood fiber VIP was 200 kg/m3, with a high porosity of 78%, a fine pore size of 112.8 μm, and a total pore volume of 7.0 cm3·g-1. The initial total thermal conductivity of the wood fiber VIP was 9.4 mW/(m·K) at 25 °C. The thermal conductivity of the VIP increased with increasing ambient temperature. These results were relatively good compared to the thermal insulation performance of current biomass VIPs, so the use of wood fiber as a VIP core material has broad application prospects.

The effect of drying condition of glassfibre core material on the thermal conductivity of vacuum insulation panel

2013 ◽  
Vol 50 ◽  
pp. 1030-1037 ◽  
Author(s):  
Cheng-Dong Li ◽  
Zheng-Cai Duan ◽  
Qing Chen ◽  
Zhao-Feng Chen ◽  
Fred Edmond Boafo ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Core Material ◽  
Vacuum Insulation ◽  
Drying Condition ◽  
Vacuum Insulation Panel

Effective thermal performance analysis of vacuum insulation panel with metal-less film and infrared-dried core material

2021 ◽  
Vol 233 ◽  
pp. 110684
Author(s):  
Seong Jin Chang ◽  
Youngtag Kim ◽  
Gyeong Seok Choi ◽  
Seunghwan Wi ◽  
Yujin Kang ◽  
...  
Keyword(s):  
Performance Analysis ◽  
Thermal Performance ◽  
Core Material ◽  
Vacuum Insulation ◽  
Vacuum Insulation Panel

Novel Honeycomb Glassfiber Mat as the Core of Vacuum Insulation Panel

2014 ◽  
Vol 900 ◽  
pp. 247-250
Author(s):  
Cheng Dong Li ◽  
Zhao Feng Chen
Keyword(s):  
Thermal Insulation ◽  
High Performance ◽  
Three Dimensional ◽  
High Strength ◽  
Glass Wool ◽  
Core Material ◽  
The Core ◽  
Vacuum Insulation ◽  
Novel Structure ◽  
Chopped Strand Mat

Vacuum insulation panels (VIPs) are regarded as one of the most promising high-performance thermal insulation solutions on the market today. In this paper, a novel structure, i.e., honeycomb glassfiber mat was proposed as the core material of VIP. The honeycomb glassfiber mat was composed of glass wool mat and glassfiber chopped strand mat. Among them, 70% centrifugal glass wool and 30% flame attenuated glass wool were mixed together to form the 0.5mm-thickness glass wool mat, while thirteen holes with diameter of 10mm were opened uniformly on the surface of glassfiber chopped strand mat. Glassfiber VIPs possessed honeycomb core material have superior thermal conductivity of 1.52mW/(m•K). In order to obtain better thermal insulation performance, ultrafine and stiff fibers with three-dimensional overlapping structure is preferable. Meanwhile, hollow fibers with bifurcated structure are the guarantee of high-strength core material.

Correlation between the Thermo-physical Properties and Core Material Structure of Vacuum Insulation Panel: Role of Fiber Types

2018 ◽  
Vol 19 (5) ◽  
pp. 1032-1038 ◽  
Author(s):  
Tengzhou Xu ◽  
Zhaofeng Chen ◽  
Yong Yang ◽  
Zhou Chen ◽  
Junxiong Zhang ◽  
...  
Keyword(s):  
Physical Properties ◽  
Core Material ◽  
Material Structure ◽  
Fiber Types ◽  
Vacuum Insulation ◽  
Thermo Physical Properties ◽  
Vacuum Insulation Panel

Vacuum Insulation Panel for Green Building

2011 ◽  
Vol 71-78 ◽  
pp. 607-611 ◽  
Author(s):  
Zhou Chen ◽  
Zhao Feng Chen ◽  
Jin Lian Qiu ◽  
Teng Zhou Xu ◽  
Jie Ming Zhou
Keyword(s):  
Thermal Insulation ◽  
High Performance ◽  
Green Building ◽  
Mineral Wool ◽  
Thermal Resistivity ◽  
Insulation Materials ◽  
Vacuum Insulation ◽  
Long Time ◽  
Energy Efficient Building ◽  
Vacuum Insulation Panel

Vacuum insulation panel is regarded as one of the most promising high performance thermal insulation materials for green building. It has extremely low thermal conductivity and its insulation performance is a factor of four to eight times better than that of conventional insulation such as mineral wool or polymer foams. The high thermal resistivity of VIP provides new solutions for slim but still energy efficient building envelopes. Although VIP has widely been used in refrigerators and freezers for a long time, it has only recently been discovered by the building sector. There is not yet any alternative for conventional thermal insulation materials in many countries, especially in China. This paper attempts to investigate the components, features and advantages of VIP for building, it will be helpful to the development of green building.

scholarly journals High-Performance Vacuum Insulation Panel: Development of Alternative Core Materials

2008 ◽  
Vol 22 (4) ◽  
pp. 103-123 ◽  
Author(s):  
Phalguni Mukhopadhyaya ◽  
Kumar Kumaran ◽  
Nicole Normandin ◽  
David van Reenen ◽  
John Lackey
Keyword(s):  
High Performance ◽  
Vacuum Insulation ◽  
Vacuum Insulation Panel ◽  
Core Materials
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