摘要
以房式仓为对象,研究为期7 d的通风过程中粮堆温度的变化情况,探究优化方测温电缆布置方式的法.采用数值模拟方法,比较不同测温电缆布置方式下的粮温监测效果,通过误差和成本分析,评估其优劣.研究结果显示,按照国家标准布置的测温电缆,其粮温监测值的最大绝对误差为0.70℃,均方根误差为 25.83%.在其基础上扩大或缩小测温电缆间距的均匀布置方式存在准确性和经济性之间的平衡问题.相比之下,非均匀布置的测温电缆,其粮温监测值的均方根误差降至 22.23%,同时降低了成本.此外,研究验证了非均匀布局对不同尺寸房式仓的适用性,优化的测温电缆非均匀布置方式具有实际应用和推广的潜力.
Abstract
This study investigated the changes in grain temperature during a seven-day ventilation process in a rectangular warehouse.It also explored the optimization of the cable layout for temperature measurement.Numerical simulation was used to compare the grain temperature monitoring performance of different cable layouts,and their trade-off were evaluated through error and cost analyses.The results showed that the maximum absolute error in temperature monitoring with the national standard cable layout was 0.70℃,and the root mean square error was 25.83%.Uniform arrangements with adjusted cable spacing achieved a balance between accuracy and cost.In contrast,heterogeneous layouts reduced the root mean square error of grain temperature monitoring to 22.23%,while further lowering costs.In addition,the study verified the applicability of the heterogeneous layout in warehouses of different sizes.The optimized heterogeneous cable layout shows potential for practical implementation and wider adoption.
维普
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