储粮通风减损技术在滇西地区的应用

Grain storage ventilation with moisture retention in western Yunnan

2011年冬季对2号仓(玉米)、3号仓(籼稻)、6号仓(小麦)、15号仓(粳稻)4个试验仓进行节能减排通风减损实仓试验。当引入粮堆后的仓外空气的相对湿度大于等于粮食水分增加2%时粮堆空气的相对湿度,但小于粮食水分增加3%时粮堆空气的相对湿度同时外界温度与粮温温差大于等于6℃时利用轴流风机进行通风。冬季通风结束后2号仓平均粮温9.9℃,水分增加0.1%,3号仓平均粮温9.1℃,水分增加0.9%,6号仓平均粮温11.4℃,水分减少0.1%,15号仓平均粮温10.2℃,水分增加0.1%。

We do real test for moisture retention in ventilation with four grain bins： No.2, No.3, No.6, No.15 grain bins in 2011 winter. We open axial-flow fans when the air relative humidity of introduced into grain heap greater or equal to the relative humidity of air in the grain mass when grain moisture content increased by 2%, but smaller than the relative humidity of air in the grain heap when the grain moisture content increased by 3%, at the same time the outside temperature equal to or greater than 6 degree. The No.2 grain bin after the winter ventilation the average temperature 9.9 ℃, an increase of 0.1% moisture; The No.3 grain bin after the winter ventilation the average temperature 9.1 ℃, an increase of 0.9% moisture; The No.6 grain bin after the winter ventilation the average temperature 11.4℃, an decrease of 0.1% moisture; The No.15 grain bin after the winter ventilation the average temperature 10.2℃, an increase of 0.1% moisture.