湿帘-风机系统对北京育肥猪舍的降温效果

发布时间：2018-06-01 20:28

本文选题：风机 + 降温　；参考：《农业工程学报》2017年07期

【摘要】：北京市夏季高温将对猪的生产造成严重影响,夏季猪舍环境温度控制尤为重要。该试验研究比较了湿帘-风机和单纯风机在北京猪舍的降温效果,设计了风机风量测量系统并实测了猪舍通风量,每天定时分别测定两猪舍内温度、湿度、风速和舍外温、湿度并进行比较分析。结果表明:试验期间,湿帘-风机猪舍和单纯风机舍6个断面风速范围分别为0.51~0.84和0.51~0.68 m/s,整体风速差异不显著(P0.05)。湿帘-风机舍舍内温度显著低于单纯风机舍(P0.05),湿帘-风机舍和单纯风机舍舍内温度高于30.0℃的小时数占比分别为5.0%和20.2%。湿帘-风机舍同一时刻断面1(湿帘端)温度低于断面6(风机端)温度0.4~2.2℃,单纯风机舍各时刻不同断面的温度差异不显著(P0.05)。单纯风机舍内的猪只呼吸频率均显著高于湿帘-风机舍内呼吸频率3.82次/min(12:00)和3.05次/min(14:00)(P0.05)。湿帘-风机舍降温系统日用水量为1.20~6.27 m~3。北京地区猪舍使用湿帘-风机系统降温效果优于单纯风机降温效果,但湿帘-风机降温将耗用一定水资源。
[Abstract]:The summer high temperature in Beijing will have a serious effect on the production of pigs. The temperature control of the piggery in summer is particularly important. The experimental study compared the cooling effect of the wet curtain fan and the simple fan in the Beijing pig house, designed the fan air volume measurement system and measured the ventilation volume of the piggery, and measured the temperature, humidity and wind in two piggery each day. The results show that the wind speed ranges of 6 sections of the wet curtain fan pig house and the Dan Chunfeng machine house are 0.51~0.84 and 0.51~0.68 m/s respectively during the test, and the overall wind speed difference is not significant (P0.05). The Shashane temperature of the wet curtain fan is significantly lower than the single pure fan house (P0.05), the wet curtain fan house and the simple fan house. The number of hours with internal temperature higher than 30 degrees centigrade, 5% and 20.2%. wet curtain fan house at the same time section 1 (wet curtain end) temperature below section 6 (fan end) temperature 0.4~2.2 C, the temperature difference of different sections of the single fan house at all times is not significant (P0.05). The respiratory rate in the simple fan house is significantly higher than that in the wet curtain winder house. The absorption frequency is 3.82 times /min (12:00) and 3.05 times /min (14:00) (P0.05). The daily water consumption of the cooling system of the wet curtain fan house is 1.20~6.27 m~3., and the cooling effect of the wet curtain fan system in Beijing area is better than that of the simple fan, but the cooling of the wet curtain fan will consume a certain amount of water.
【作者单位】：中国农业大学动物科技学院;动物营养学国家重点实验室;中国科学院国家天文台;
【基金】：生猪产业技术体系北京市创新团队项目(BAIC02-2016)
【分类号】：S828

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