温湿度对稻谷粮堆结露的影响及实仓结露预警  

Effect of Temperature and Humidity on Condensation of Grain Bulk and Its Early Warning on Condensation

作　　者：章铖 鞠兴荣 宋宏铭 田兴国 徐欣东 袁建 何荣 Zhang Cheng;Ju Xingrong;Song Hongming;Tian Xingguo;Xu Xingdong;Yuan Jian;He Rong(College of Food science and Engineering,The Jiangsu Province Center of Collaborative Innovation Center for Modem Grain Circulation and Safety, Key Laboratory of Grains and Oils Quality Control and Processing, Nanjing University of Finance and Economics, Nanjing 210023;Sinograin Reserves of Yangzhou Depot , Yangzhou 225000)

机构地区：[1]南京财经大学食品科学与工程学院,江苏省现代粮食流通与安全协同创新中心,江苏高校粮油质量安全控制及深加工重点实验室,南京210023 [2]中央储备粮扬州直属库有限公司,扬州225000

出　　处：《中国粮油学报》2018年第12期87-94,共8页Journal of the Chinese Cereals and Oils Association

基　　金：国家重点研发计划(2016YFD0401005-2);国家重点研发计划(2017YFD0401404);2017年江苏省研究生科研创新计划项目(KYCX17_1223);江苏高校优势学科建设工程(2014-124).

摘　　要：粮食安全是国家自立、经济发展和社会稳定的重要保障。粮食在储藏过程中由于粮堆结露使得粮堆局部水分含量升高,易引起粮食呼吸旺盛,微生物活动加剧,甚至引起粮堆发热、霉变,严重危害粮食安全。本研究通过分析空气中饱和水汽量与温湿度的关系曲线,获得露点温度与空气温度、湿度的数学模型t_2=t_1+lg(RH_1)/lg1. 063,并绘制露点温度预测图。通过实验室模拟结露绘制稻谷表层结露曲线,拟定义了稻谷表层结露的前期、中期与末期。此外分析季节交替对粮堆各区域的温度变化的影响,进行结露预警。为完善我国的粮情监测系统,指导储粮实践,保障粮食安全提供借鉴。Food security is an important guarantee for national independence, economic development and social stability. The condensation of grain bulk has increased the local moisture content of the grain bulk in the process of storage, which may easily lead to strong food respiration, intensified microbial activities and even caused heat and mildew in grain bulk, which seriously endangered food security. In this paper, the mathematical model of the dew point temperature,air temperature and humidity were obtained by analyzing the curve of the relationship between the amount of saturated vapor in the air and temperature and humidity,t2= t1 + 1 g（ RH1）/lg1.063, and the dew point temperature prediction figure was plotted. The condensation curve of rice surface was plotted by simulating the condensation in the laboratory, and the early, middle and final stages of the surface condensation of rice were quasi-defined. In addition, the effect of seasonal alternation on temperature changed in each region of the grain bulk was analyzed and condensation warning was performed. It would provide a theoretical basis for improving Chinese grain situation monitoring system, guiding grain storage practices and ensuring food security.

关 键 词：温度 湿度 稻谷粮堆 结露 预警 

分 类 号：TS210.2[轻工技术与工程—粮食、油脂及植物蛋白工程]