严寒地区暖风机对鸡舍环境因素影响分析研究

在我国严寒地区采用暖风机采暖的鸡舍,其环境因素对肉鸡产量有直接影响.采用CFD模拟测试鸡舍暖风机不同工况,通过Airpak模拟单、双侧布置暖风机下温度场、风速分布、二氧化碳分布情况,对模拟数据进行比较分析.结果表明暖风机的布置及送风参数对气流变化影响较小,主要体现在对鸡舍内温度的影响上,故暖风机单侧布置时,最佳送风风量应控制在4 500 m~3/h左右,相比单侧布置暖风机,双侧布置能有效改善远离暖风机侧温度过低的现象,同时对鸡舍内气流及二氧化碳(CO_2)分布影响较小.

Influences of warm air heaters on chicken assembly occupancies in cold regions

In the cold regions of China,warm- air heaters are used for chicken assembly occupancies while environmental factors will have direct impacts on the chicken production. This research uses CFD to simulate the different working conditions of warm- air heaters,and tests with the help of Aipak the temperature,the air velocity and the distribution of carbon dioxide with the warm air heaters on one side or both sides. The analysis of the results shows that the distribution of the warm- air heaters and the air inlet parameter have no significant impact on the air current,but mainly on the temperature. Thus,if the warm- air heaters are put on one side,the optimum air velocity is about 4 500 m~3/ h. If the warm- air heaters are put on both sides,the temperature field,the air velocity and the distribution of carbon dioxide will be better for the chicken production.