本文主要研究内容
作者唐玉洁（2019）在《寒冷地区奶牛舍保温幕应用效果研究》一文中研究指出：寒冷地区密闭牛舍冬季通风和保温存在矛盾,导致舍内环境长期处于低温高湿状态。为掌握密闭式牛舍冬季舍内主要环境参数的分布和变化规律,对位于吉林省白城市的密闭式自然通风牛舍的舍内温度、相对湿度和风速等进行了连续的现场测试,并利用CFD软件对改造前舍内温湿度环境进行了数值模拟。在此基础上,对牛舍建筑实施了现场改造,一是在牛舍上方距离地面4.0m位置安装了温室中常用的保温幕,以增加舍内下方奶牛活动区域的保温;二是在牛舍屋面均匀安装了16台专门为牛舍通风设计的烟囱风机,并设计了7种不同运行工况,试验结果表明:(1)测试期间舍外平均温度为-14.58℃,平均相对湿度为51.51%,舍内平均温度为-3.92℃,平均相对湿度为85.7%,舍内长期处于低温高湿状态,舍内卧床处1.2 m平均温度比4.3 m平均温度低1.49℃,靠近大门横截面平均温度比靠近中间横截面平均温度低4.56℃,整舍温度分布布局,同时CFD数值模拟显示,舍内空气流场受卷帘门影响较大,主要热源是奶牛,热量在热压通风作用下汇集在卧床上方,导致舍内卧床上方温度较高。(2)冬季将舍内温度维持在0℃作为改造目标,选择相应的保温幕材料安装到舍内一侧,安装后通过连续测试舍内温湿度,安装保温幕一侧平均温度比未安装保温幕一侧平均温度提升为3.55℃,相对湿度提升1.04%,保温幕在舍内不同横截面保温效果相同,并且舍外温度越低,舍内保温幕保温效果越好,夏季保温幕对舍内通风有所改善,保温幕对舍内保温效果显著,但未能解决舍内高湿问题。(3)舍内安装16台屋顶烟囱风机,舍内全天开启16和12台时,整体相对湿度有所改善,但是舍内温度明显降低,安装保温幕一侧保温效果不明显,开启8台时,保温幕保温效果有所提升,但对舍内相对湿度改善效果不明显,开启12台风机对舍内温度分布不均有所改善,通过对比确定舍内风机分段开启方案。本研究为未来建立高产奶牛基地奠定理论基础,对提高养奶牛场经济效益,促进乳业健康发展具有重要意义。
Abstract
han leng de ou mi bi niu she dong ji tong feng he bao wen cun zai mao dun ,dao zhi she nei huan jing chang ji chu yu di wen gao shi zhuang tai 。wei zhang wo mi bi shi niu she dong ji she nei zhu yao huan jing can shu de fen bu he bian hua gui lv ,dui wei yu ji lin sheng bai cheng shi de mi bi shi zi ran tong feng niu she de she nei wen du 、xiang dui shi du he feng su deng jin hang le lian xu de xian chang ce shi ,bing li yong CFDruan jian dui gai zao qian she nei wen shi du huan jing jin hang le shu zhi mo ni 。zai ci ji chu shang ,dui niu she jian zhu shi shi le xian chang gai zao ,yi shi zai niu she shang fang ju li de mian 4.0mwei zhi an zhuang le wen shi zhong chang yong de bao wen mu ,yi zeng jia she nei xia fang nai niu huo dong ou yu de bao wen ;er shi zai niu she wu mian jun yun an zhuang le 16tai zhuan men wei niu she tong feng she ji de yan cong feng ji ,bing she ji le 7chong bu tong yun hang gong kuang ,shi yan jie guo biao ming :(1)ce shi ji jian she wai ping jun wen du wei -14.58℃,ping jun xiang dui shi du wei 51.51%,she nei ping jun wen du wei -3.92℃,ping jun xiang dui shi du wei 85.7%,she nei chang ji chu yu di wen gao shi zhuang tai ,she nei wo chuang chu 1.2 mping jun wen du bi 4.3 mping jun wen du di 1.49℃,kao jin da men heng jie mian ping jun wen du bi kao jin zhong jian heng jie mian ping jun wen du di 4.56℃,zheng she wen du fen bu bu ju ,tong shi CFDshu zhi mo ni xian shi ,she nei kong qi liu chang shou juan lian men ying xiang jiao da ,zhu yao re yuan shi nai niu ,re liang zai re ya tong feng zuo yong xia hui ji zai wo chuang shang fang ,dao zhi she nei wo chuang shang fang wen du jiao gao 。(2)dong ji jiang she nei wen du wei chi zai 0℃zuo wei gai zao mu biao ,shua ze xiang ying de bao wen mu cai liao an zhuang dao she nei yi ce ,an zhuang hou tong guo lian xu ce shi she nei wen shi du ,an zhuang bao wen mu yi ce ping jun wen du bi wei an zhuang bao wen mu yi ce ping jun wen du di sheng wei 3.55℃,xiang dui shi du di sheng 1.04%,bao wen mu zai she nei bu tong heng jie mian bao wen xiao guo xiang tong ,bing ju she wai wen du yue di ,she nei bao wen mu bao wen xiao guo yue hao ,xia ji bao wen mu dui she nei tong feng you suo gai shan ,bao wen mu dui she nei bao wen xiao guo xian zhe ,dan wei neng jie jue she nei gao shi wen ti 。(3)she nei an zhuang 16tai wu ding yan cong feng ji ,she nei quan tian kai qi 16he 12tai shi ,zheng ti xiang dui shi du you suo gai shan ,dan shi she nei wen du ming xian jiang di ,an zhuang bao wen mu yi ce bao wen xiao guo bu ming xian ,kai qi 8tai shi ,bao wen mu bao wen xiao guo you suo di sheng ,dan dui she nei xiang dui shi du gai shan xiao guo bu ming xian ,kai qi 12tai feng ji dui she nei wen du fen bu bu jun you suo gai shan ,tong guo dui bi que ding she nei feng ji fen duan kai qi fang an 。ben yan jiu wei wei lai jian li gao chan nai niu ji de dian ding li lun ji chu ,dui di gao yang nai niu chang jing ji xiao yi ,cu jin ru ye jian kang fa zhan ju you chong yao yi yi 。
论文参考文献
论文详细介绍
论文作者分别是来自黑龙江八一农垦大学的唐玉洁，发表于刊物黑龙江八一农垦大学2019-07-08论文，是一篇关于寒区牛舍论文,低温高湿论文,保温幕论文,屋顶烟囱风机论文,黑龙江八一农垦大学2019-07-08论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自黑龙江八一农垦大学2019-07-08论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。
标签：寒区牛舍论文; 低温高湿论文; 保温幕论文; 屋顶烟囱风机论文; 黑龙江八一农垦大学2019-07-08论文;