scholarly journals Research on the Thermal Insulation Performance of High Temperature Gradient Composite Insulation Material

2019 ◽  
Vol 678 ◽  
pp. 012100
Author(s):  
Xiankai Sun ◽  
Shichao Zhang ◽  
Haoran Sun ◽  
Kai Fang ◽  
Dachen Yan ◽  
...  
Keyword(s):  
High Temperature ◽  
Temperature Gradient ◽  
Thermal Insulation ◽  
Insulation Material ◽  
High Temperature Gradient ◽  
Insulation Performance

Effect of Moisture Absorption on High Temperature Thermal Insulation Performance of Fiber Insulation Materials

2016 ◽  
Vol 697 ◽  
pp. 445-448
Author(s):  
Hao Ran Sun ◽  
Si Chao Zhang ◽  
Shu Guang Chen ◽  
Guang Hai Wang ◽  
Liu Shi Tao ◽  
...  
Keyword(s):  
High Temperature ◽  
Pore Size ◽  
Thermal Insulation ◽  
Moisture Absorption ◽  
Fiber Material ◽  
Insulation Material ◽  
Insulation Property ◽  
Effect Of Moisture ◽  
Thermal Insulation Property ◽  
Insulation Performance

In this paper, effect of moisture absorption on high temperature thermal insulation performance of fiber insulation material is studied. Fiber material is stored in 40°C through a long period of time, then spontaneous moisture absorption of fiber material is measured. According this test result, 20% and 40% moisture absorption content gradient are determined. Pore distribution and high temperature thermal insulation property of samples of 20% and 40% moisture absorption and the dry samples are all tested in this study. The internal pore size distribution of fiber insulation material after moisture absorbing has a certain coarsening. Fiber material after moisture absorbing will make its pore size become large. And oxygen acetylene test results showed that: the larger moisture absorption, the more slowly the initial temperature rises. Fiber material after moisture absorbing will make its low temperature thermal insulation performance reduce, but it has little impact of its high temperature thermal insulation performance.

Thermal Insulation Property of Newspaper Membrane Encased Soil-Based Aerated Lightweight Concrete Panels

2011 ◽  
Vol 261-263 ◽  
pp. 783-787 ◽  
Author(s):  
Soon Ching Ng ◽  
Kaw Sai Low ◽  
Ngee Heng Tioh
Keyword(s):  
Temperature Gradient ◽  
Thermal Insulation ◽  
Lightweight Concrete ◽  
Clayey Soil ◽  
Heat Insulation ◽  
Control Panel ◽  
Insulation Property ◽  
Concrete Panels ◽  
Thermal Insulation Property ◽  
Insulation Performance

Roof and wall are known to be responsible for heat entering into a building and should therefore be thermally insulated in order to lessen energy consumption required for air-conditioning. In this study, four soil-based aerated lightweight concrete (ALC) panels each measures 750 mm (length) x 750 mm (breadth) x 70 mm (thick) with different aerial intensity of newspaper membrane encased were produced and tested on their thermal insulation property. For environmental friendly and economy reasons, clayey soil was used in place of sand to produce the ALC panels and they were tested in the Thermal Laboratory for twenty hours. Temperature gradient was computed based on the surface temperature measured during the test. The results obtained indicated that newspaper membrane encased soil-based ALC panels have superior heat insulation performance compared to control panel in terms of temperature gradient. It is found that the temperature gradient increased from 1.92 °C/cm to 2.08 °C/cm or 8.3% higher than control panel with just merely 0.05 g/cm2 of newspaper membrane encased.

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