[1]俞晓静,王远成*,戚禹康.储粮仓横向保水通风的数值模拟及对比研究[J].山东建筑大学学报,2019,34(02):37-44.[doi:10.12077/sdjz.2019.02.007]
 YU Xiaojing,WANG Yuancheng*,QI Yukang.Comparative study on numerical simulation of lateral ventilation for moisture retention of grain storage[J].Journal of Shandong jianzhu university,2019,34(02):37-44.[doi:10.12077/sdjz.2019.02.007]
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储粮仓横向保水通风的数值模拟及对比研究()
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《山东建筑大学学报》[ISSN:1673-7644/CN:37-1449/TU]

卷:
34
期数:
2019年02期
页码:
37-44
栏目:
研究论文
出版日期:
2019-04-15

文章信息/Info

Title:
Comparative study on numerical simulation of lateral ventilation for moisture retention of grain storage
文章编号:
1673-7644(2019)02-0037-08
作者:
俞晓静王远成*戚禹康
(山东建筑大学 热能工程学院,山东 济南 250101)
Author(s):
YU XiaojingWANG Yuancheng*QI Yukang
(School of Thermal Engineering, Shandong Jianzhu University, Jinan 250101, China)
关键词:
横向通风温湿度数值模拟保水通风
Keywords:
lateral ventilation temperature and humidity numerical simulation ventilation for moisture retention
分类号:
S379
DOI:
10.12077/sdjz.2019.02.007
文献标志码:
A
摘要:
粮仓横向通风方式相比于传统的竖直通风方式,便于粮食装卸,但其通风跨度大,粮堆内部的温度和水分分布复杂,对储粮横向保水通风的模拟对比研究,可以为安全储粮提供参考依据。文章基于多孔介质的传热传质理论,建立了横向通风过程中粮堆热湿传递的数学模型,并对横向送风温湿度不同的工况进行模拟和分析。结果表明:当进风空气与粮堆的相对湿度差为0 时,粮堆内部吸湿与解吸湿过程会很快达到动态平衡,既保证了降温又使粮堆水分降低幅度很小;进风温湿度一定,通风时间越长能耗越大,因此通风时间不宜过长,横向通风时间为120~144 h;通风天数相同的情况下,相比于传统的竖直通风方式,采用横向通风方式可以实现高效降温的效果,并且反向通风能有效降低粮堆的平均温度。
Abstract:
Compared with the traditional vertical ventilation of barn, the lateral ventilation is convenient for grain loading and unloading, but the span of lateral ventilation is large, the temperature and moisture distribution inside the grain pile is complicated. Therefore, the comparative study on numerical simulation of lateral ventilation for moisture retention of grain storage can provide a reference for safe storage of grain. This paper, based on the theory of heat and mass transfer of porous media, establishes the mathematical model of heat and moisture transfer of grain in the process of lateral ventilation and simulates and analyzes the working conditions of different temperature and humidity of air. The results show that the relative humidity difference between the inlet air and the grain pile is 0%, the process of moisture absorption and desorption in the grain pile quickly reaches a dynamic equilibrium, which not only ensures cooling, but also reduces the moisture content of grain pile very little. Given the temperature and humidity of the inlet air, the longer the ventilation time, the greater the energy consumption, so the ventilation time should not be too long, and lateral ventilation for 120~144 hours is enough. The lateral ventilation can effectively reduce the average temperature of the grain pile compared to traditional vertical ventilation during the same period of ventilation, and reverse ventilation can effectively reduce the average temperature of grain pile.

参考文献/References:

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相似文献/References:

[1]戚禹康,王远成*,俞晓静.浅圆仓横向通风和垂直通风数值模拟对比研究[J].山东建筑大学学报,2019,34(03):1.
 QI Yukang,WANG Yuancheng*,YU Xiaojing.Comparative study on radial and vertical ventilation simulation of squat silo[J].Journal of Shandong jianzhu university,2019,34(02):1.

备注/Memo

备注/Memo:
收稿日期:2019-02-17基金项目:国家重点研发计划项目(2016YFD0400100, 2016YFD0401002);国家粮食公益专项(201513001)作者简介:俞晓静(1995-),女,在读硕士,主要从事多孔介质传热传湿等方面的研究. E-mail:13065053585@163.com通讯作者*:王远成(1963-),男,教授,博士,主要从事复杂多孔介质传热传湿等方面的研究.E-mail:wycjn1@163.com
更新日期/Last Update: 2019-05-05