Using hard bubble polyurethane,special sealing groove for granary and other materials to transform the floor cracks,inner walls,vents and other key parts of granary,and the actual effects of the transformation are compared and analyzed.The test results show that the modified granaries have significantly enhanced the heat insulation and air tightness,showing superiority in the applications of temperature control grain storage,air regulation grain storage and insect control,and the construction is convenient and the cost is low,which provides a feasible scheme for the green transformation of grain storage industry.
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