摘要
本文采用冬季太阳高度角最小,夏季太阳高度角最大,太阳高度角随纬度变化而变化这一原理,确定牛舍棚面间的计算公式为C=B-h(B:为50°临界值,h为太阳高度角),在舍外温度达-20℃~-30℃时夜间舍内温度达7℃~8℃以上。
In the thesis using the principle that the sun hign angle is the smallest in the winter and the largest in the summer and the sun high angle change with latitude change defined the computing formula of the cattle shed the shack angle is: C=B-h(B is 50° critical angle h is the sun high angle), Temperature of the cattle shed outside is -20°~-30°, in the night cattle house temperature is 7°-8° over.
出处
《黄牛杂志》
1998年第5期13-14,共2页
Journal of Yellow Cattle Science