高大平房仓双侧吸出式斜流通风数值模拟和实验的比较研究  

Numerical and Experimental Study on Temperature and Moisture Distribution in Stored Grains in a Warehouse During the Bilateral Suction Aeration

作　　者：王远成[1] 石天玉 曲安迪 杨开敏[1] 魏雷 Wang Yuancheng;Shi Tianyu;Qu Andi;Yang Kaimin;Wei Lei(School of Thermal Engineering,Shandong Jianzhu University,Jinan 250101;Institute of Food Quality and Nutrition,Academy of National Food and Strategic Reserves Administration,Beijing 100037)

机构地区：[1]山东建筑大学热能工程学院,济南250101 [2]国家粮食和物资储备局科学研究院,北京100037

出　　处：《中国粮油学报》2020年第3期139-146,共8页Journal of the Chinese Cereals and Oils Association

基　　金：国家重点研发计划(2016YDF0401002,2016YFD0400100)。

摘　　要：本研究基于数值模拟方法,对高大平房仓双侧吸出式斜流降温保水通风实验工况进行了数值模拟仿真,分析了在双侧吸出式斜流通风过程中粮堆温度和水分的变化规律,对实验数据与计算机模拟结果进行了对比分析。同时,探究了斜流通风与横向通风相结合时的降温保水效果。研究发现,采用双侧吸出式揭膜斜流通风,在通风空气温度和湿度合适的情况下,可以实现高大平房粮堆上部的快速降温保水效果。在进行斜流通风后,再适当地进行一段时间的横向通风,就可以有效地降低粮堆底部的粮温,而且粮堆水分基本不变。斜流与横向相结合的通风方式可以实现储粮快速降温保水效果。The research is based on numerical simulation method.The numerical and experimental investigations of the temperature and moisture change in bulk stored wheat in warehouse during the bilateral suction aeration were conducted in the present paper.The experimental data and numerical simulation results were compared and analyzed.The effect of cooling and moisture retention during combination of bilateral suction and horizontal cross aeration was investigated.It was found in the research that numerical simulation method helps to effectively predict the variation of temperature and moisture in grain stack in warehouse during the bilateral suction aeration.The combination of bilateral suction aeration with horizontal cross aeration contributes to achieving rapid cooling and moisture retention in bulk stored grain in warehouse.

关 键 词：数值预测 斜流通风 热湿传递 降温保水 

分 类 号：TH432[机械工程—机械制造及自动化]