[1]俞晓静,王远成*,戚禹康.高大平房仓横向与竖向通风的数值模拟及分析[J].山东建筑大学学报,2020,(01):64-70.[doi:10.12077/sdjz.2020.01.010]
 YU Xiaojing,WANG Yuancheng*,QI Yukang.Numerical simulation and comparative analysis of lateral and vertical ventilation of large warehouses[J].Journal of Shandong jianzhu university,2020,(01):64-70.[doi:10.12077/sdjz.2020.01.010]
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高大平房仓横向与竖向通风的数值模拟及分析()
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《山东建筑大学学报》[ISSN:1673-7644/CN:37-1449/TU]

卷:
期数:
2020年01期
页码:
64-70
栏目:
研究论文
出版日期:
2020-02-15

文章信息/Info

Title:
Numerical simulation and comparative analysis of lateral and vertical ventilation of large warehouses
文章编号:
1673-7644(2020)01-0064-07
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 Xiaojing WANG Yuancheng*QI Yukang
(School of Thermal Engineering,Shandong Jianzhu University, Jinan 250101,China)
关键词:
高大平房仓数值模拟横向通风竖向通风均匀性
Keywords:
large warehouse numerical simulation lateral ventilation vertical ventilation uniformity
分类号:
S379
DOI:
10.12077/sdjz.2020.01.010
文献标志码:
A
摘要:
机械通风是调节高大平房仓粮堆温湿度的有效方式,对横向和竖向通风方式下粮堆内部热湿耦合传递规律进行分析,可为实际储粮仓的最佳通风条件设置提供重要依据。文章建立了高大平房仓的物理模型,采用计算流体动力学软件,模拟了横、竖向通风下粮堆的温度和水分分布,分析了温度水分均匀性指数和通风能耗。结果表明:进风湿度会影响粮堆的水分分布,由于粮堆内部吸湿与解吸湿过程更快达到平衡,因此横向通风方式粮堆内部的保水性能更好;相较于竖向通风,横向通风系统具有通风路径长、温度和水分分布均匀性好等优势;横向通风单位阻力小,空气流动速度快,相同温湿度条件下其降温调湿的效率更高。
Abstract:
Mechanical ventilation is an effective way to adjust the temperature and humidity of grain stacks in large warehouses. The numerical simulation and analysis of the coupled heat and humidity transfer law in grain stacks under lateral and vertical ventilation modes can provide important basis for the optimal temperature and humidity setting of ventilation in actual grain storage. This paper establishes a physical model of a large warehouse, simulates the temperature and moisture distribution of grain stack under lateral and vertical ventilation by using computational fluid dynamics software, and analyses the temperature and moisture uniformity and ventilation energy consumption. The results show that the moisture distribution of grain stack is affected by the degree of lative humidity of the air. Because the process of moisture absorption and desorption in grain stack can reach equilibrium faster, the water retention of grain stack is better by lateral ventilation. Compared with vertical ventilation, the lateral ventilation system has the advantages of long ventilation path, good uniformity of temperature and moisture distribution. The unit resistance to lateral ventilation is small, the air flow speed is fast, and the cooling and humidification efficiency is higher under the same temperature and humidity conditions.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2019-12-10 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: 2020-01-18