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本文根据奶牛舍机械通风的要求,提出以工作区域的平均风速和风速分布不均匀系数J作为评价通风方案的主要指标。通过模型试验,探讨了舍内气流的分布规律,以及送风参数、风机安装方式对、J的影响。同时,还对模型试验和实测结果进行了比较。所得结论可作为研究、设计和改进畜禽舍正压通风方案的参考。
Based on the requirements of mechanical ventilation in dairy cow houses, this paper proposes to use the average wind speed in the work area and the uneven distribution coefficient of wind speed J as the main indicators for evaluating the ventilation scheme. Through the model test, the distribution of airflow in the house was discussed, as well as the influence of air supply parameters, fan installation methods, and J. At the same time, comparisons were made between model tests and actual measurements. The conclusions can be used as reference for researching, designing and improving the positive pressure ventilation program in livestock houses.