加氣混凝土隔熱屋面熱工性能的實(shí)驗(yàn)研究
[Abstract]:Guangzhou is a sub-tropical monsoon climate region. Guangzhou is located at low latitudes and receives more solar radiation on the surface. At the same time, due to the influence of monsoon, the warm currents of the ocean in summer form a climate of high temperature, high humidity, and heavy rain, so, The use of passive evaporation and cooling technology has climate advantages. As a new energy-saving material, aerated concrete has the characteristics of heat preservation, heat insulation, light weight, fire retardant, sound absorption and sound insulation and easy to process, and aerated concrete is a kind of porous water storage material which is used in many fields. It can be used not only as insulation layer of thermal insulation roof, but also as passive evaporation layer of evaporative insulation roof. All belong to aerated concrete insulated roof. Whether the aerated concrete layer in aerated concrete insulation roof is better as insulation layer or as passive evaporation layer, the previous research has not come to a clear conclusion. In this experiment, the experimental roof was built in the actual building roof in July and August, the highest temperature in one year in Guangzhou area, and the influence of the position of aerated concrete soil layer on the thermal insulation performance of aerated concrete insulation roof was compared and analyzed. The influence of the thickness of aerated concrete layer on the thermal performance of aerated concrete insulated roof is analyzed, and the optimum thickness of aerated concrete insulated roof is sought. The main work of this paper is as follows: 1. The thickness of aerated concrete layer is 50mm 100mm 150mm aerated concrete insulation roof and aerated concrete evaporative insulation roof. The temperature and heat flux of the external and inner surfaces of the roof were measured. The thermal insulation effect of aerated concrete insulation roof and evaporative insulation roof with the same thickness of aerated concrete is compared and analyzed, and the influence of the position of aerated concrete layer on the thermal performance of aerated concrete insulated roof is studied. The influence of aerated concrete layer thickness on thermal performance of aerated concrete thermal insulation roof is studied by comparing and analyzing the thermal insulation effect of aerated concrete insulation roof with different thickness of aerated concrete layer; 4. the influence of the thickness of aerated concrete layer on the thermal performance of aerated concrete thermal insulation roof is studied. The thermal insulation effect of aerated concrete evaporative insulation roof with different thickness of aerated concrete is compared and analyzed, and the influence of the thickness of aerated concrete layer on the thermal performance of aerated concrete evaporative insulation roof is studied.
【學(xué)位授予單位】:華南理工大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2013
【分類號(hào)】:TU111.2
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