摘要
根据不同季节的太阳高度角随地理纬度变化这一原理,确定牛舍塑料暖棚面与地面的最佳夹角,使冬季大寒(最冷)这天正午时分,太阳辐射的入射角与塑料棚面垂直,以其充分利用太阳的辐射热能,提高牛舍内的温度。通过对地处北纬43°地区通辽市科尔沁区余粮堡镇吴金宝村设计的日光暖棚牛舍的温热环境和舍内空气质量的测定表明:大寒这天舍外气温-20￣-8℃下,牛舍内的温度平均5.25℃,有害气体浓度均低于中华人民共和国国家标准,达到了防寒抗灾的目的。
According to the principle that sun high angle in different seasons changes with the change of latitude, the most proper angle between cattle＇s plastic warm shed and ground was determined, which make angle between sun incident position and surface of shed vertical at midday of ＂Dahan＂ （the coldest day in winter ）. Thus, radiative sun heat can be effectively utilized to increase economic profits of raising cattle. The results of determining air temperature, relative humidity and air quality of a cattle＇ s shed and a sheep＇ s shed at north latitude 43°show that average air temperature of the cattle＇s shed is 5.25 ℃ while the outside temperature is -20-8℃ on the ＂Dahan＂ day. Air quality is within the scope of national standard and it is valid to resist cold and defend snow disaster.
出处
《中国畜牧杂志》
CAS
北大核心
2006年第17期54-56,共3页
Chinese Journal of Animal Science
基金
内蒙古自治区教育厅项目(J02075)
内蒙古民族大学项目(2002108)
关键词
畜牧学
畜舍设计
环境评价
日光暖棚
animal science
cattle＇s shed design
environmental evaluation
plastic warm shed
