Study of thermal properties for insulation coatings applied to roof pavement

• Main Authors: Lee Hsin Lun, 李欣倫
• Other Authors: Hung Ming Jui
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/51406273438543744183

碩士 === 明志科技大學 === 生化工程研究所 === 99 === How to effectively control the greenhouse effect and mitigate the urban heat island intensity is an urgent issue on the improvement of long-term survival and the living environment for mankind. Among them, the use of cool paving technology to increase the albedo of the solar radiation heat for roof of the building, the body wall or the pavement of public space, roads, squares etc., has gradually become an emerging field of study, is expected to reduce the urban heat island and building energy-saving and carbon reduction, play a substantial benefit. For this reason, the use of Infrared Thermal Imager, thermal conductivity meter, scanning electron microscope etc. as the main equipment of the instrument, respectively, the thermal characteristics of a series of pavement materials and surface coating insulation paint materials tests in the real field, outdoor and the laboratory. Expectations for the thermal properties of cold pavement technology, environmental benefits, technology and energy conservation and reduce carbon emissions assessment, to have a more in-depth understanding. The preliminary findings show that: (1)the surface temperature reaction trends for man-made pavement and surface coating insulation paint materials are consistent with outdoor air temperature, the thermal properties deeply affected by solar radiation of heat; (2)In this paper, “Pavement Temperature Load Index, Tp"and" Improvement Targets of the Temperature Difference Strength, Ip” two indicators can be used to analyze the use of artificial surfacing materials is excessive and improper basis for the assessment; (3)Solid surface coating insulation paint materials compared to the rheological state have relatively low thermal conductivity, due to the presence of water molecules in the endothermic process of evaporation latent heat, will help increase the sake of thermal conductivity; (4)Found by the SEM image, If the presence of porous structure of surface coating insulation paint materials, by the effect of the hollow off the heat to reduce the thermal conductivity of the material itself; (5)In the same material composition and the same exposure conditions, the lowest surface temperature of the white material, gray secondly, while the green highest, temperature differences of up to 1.13 to 2.23 times (green opposed to white), or 0.99 to 1.48 times (gray opposed to white), the color of the surface coating insulation paint materials will affect the surface temperature response of pavement materials; (6) Surface coating insulation paint material is applied on the surface of the insulation tiles, as time progresses, the surface temperature rising trend. Time effects and surface cleanliness of the surface temperature of surface coating insulation paint materials, the existence of adverse effects. Keywords: Urban heat island effect, surface coating, insulation materials, cold pavement, the sun radiant heat.