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一、概述双层薄膜密闭控温技术,可以较有效地阻止粮堆内外热对流,加之空气是热的不良导体,这对于保持粮堆相对低温起到一定的作用。据资料介绍,经过碾压的麦秸导热系数是0.04千卡/米·时·℃,略高于空气。我县马头粮管所对“双膜”控温技术做了一些改进,即双层薄膜中间夹层麦秸密闭粮面,仓墙四周与麦堆之间填塞麦秸,以减少仓墙导热对麦堆的影响。实验证明这种“双膜一草”密闭控温技术,具有操作简单,易于检查,费用较低等特点,实验仓内各区段上层粮温和中层粮温基本趋于平衡,一般不超过20℃,也没有发生害
I. Overview Double layer film temperature control technology can effectively prevent convection inside and outside the grain, combined with the air is a poor conductor of heat, which is relatively low temperature for the food pile to play a certain role. According to the information, after rolling wheat straw thermal conductivity is 0.04 kcal / m · ℃, slightly higher than the air. Matou Grain and Fertilizer Co., Ltd. made some improvements on the temperature control technology of “double-membrane”, namely double-layer film in the middle of wheat straw confined grain surface, Impact. Experiments show that the double-membrane one grass closed temperature control technology has the characteristics of simple operation, easy inspection and lower cost. The upper grain temperature and the middle grain temperature in each section of the experimental warehouse are basically in balance, generally not exceeding 20 ° C., There is no harm