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Nowadays with the development of science, many new technologies are being introduced to the fabric membrane material fields. Membrane structures have been widely used in industrial storage buildings to reduce the dust pollution from open storage depots. But the thermal environment of these buildings is poor due to its light weight and low thermal resistance. It is worth exploring appropriate measures to study this problem. Therefore, a monitoring platform was established in order to study the indoor thermal environment of the industrial storage building with membrane structure. The solar radiation heat model was established using MATLAB program based on the theory of thermal transfers. And studied the impact of the outdoor temperature and solar radiation intensity in the heat transfer characteristics of membrane material. The indoor air temperature distribution of the buildings was also analyzed. The results show that solar radiation has a significant effect on the surface temperature of the fabric membrane material. The solar radiation of different intensities incident on the surface of the fabric membrane causes its surface temperature to fluctuate rapidly and significantly. Without indoor heat source, the indoor thermal environment is mainly affected by the solar radiation heat exchange of the fabric material. [ABSTRACT FROM AUTHOR]

• Thermal optical characteristic parameters test of 13 thin membrane samples. • Analysis of the influence of thermal optical parameters on solar radiation heat gain. • Establishment of solar radiant heat gain model for thin membrane structure building. • Calculation of indoor heat gain in thin membrane structure industrial building. In recent years, the construction of enclosed material yard projects has becoming an urgent requirement to improve ecological environment and living environment quality. Thin membrane structures have been widely used in industrial building, especially for storage building roofs. Due to the thermal-optical properties of translucent thin fabric material, such as the absorption and transmittance of solar radiation, the indoor thermal environment is seriously disturbed. Moreover, membrane building structures are usually irregular. Compared with conventional buildings material, the translucent thin fabric material particularly responsive to changes in external environment conditions. As a result, the solar radiation heat gain calculation of membrane buildings is complicated. It is worth exploring measures to tackle this problem. Therefore, in order to solve the problem that the relevant thermal-optical parameter is difficult to obtain. The 13 thin membrane samples were tested and the thermal optical characteristic parameters were analyzed in this paper. A practical enclosed membrane structure building was selected as the research object. In addition, a solar radiation heat transfer model was established. The indoor solar heat gain under the action of solar radiation heat was calculated and the effect of different light transmittance and absorptance on the indoor radiation heat gain was studied. It can provide reference for heat gain calculation and ventilation design of membrane structure storage buildings. [ABSTRACT FROM AUTHOR]