[1]王 怡,第五徐涛,黄艳秋.双热源作用下侧吸罩流场及捕集效率特性研究[J].西安建筑科技大学学报(自然科学版),2016,48(04):568-573.592.[doi:10.15986/j.1006-7930.2016.04. 018]
 WANG Yi,DIWU Xutao,HUANG Yanqiu.Research on the flow field and capture efficiency characteristics of side suction hood influenced by the double heat source s[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2016,48(04):568-573.592.[doi:10.15986/j.1006-7930.2016.04. 018]
点击复制

双热源作用下侧吸罩流场及捕集效率特性研究()
分享到:

西安建筑科技大学学报(自然科学版)[ISSN:1006-7930/CN:61-1295/TU]

卷:
48
期数:
2016年04期
页码:
568-573.592
栏目:
出版日期:
2016-08-31

文章信息/Info

Title:
Research on the flow field and capture efficiency characteristics of side suction hood influenced by the double heat source s
文章编号:
1006-7930(2016)04-0568-06
作者:
王 怡第五徐涛黄艳秋
(西安建筑科技大学环境与市政工程学院,陕西 西安 710055 )
Author(s):
WANG Yi DIWU Xutao HUANG Yanqiu
(School of Environment and Municipal Engineering, Xi’an Univ. of Arch. & Tech., Xi’an 710055, China)
关键词:
双热源 侧吸罩 流场特性 捕集效率
Keywords:
two heat source side-suction hood flow field capture efficiency
分类号:
TU834.3
DOI:
10.15986/j.1006-7930.2016.04. 018
文献标志码:
A
摘要:
在精炼镁车间内,广泛存在着双热源作用下的侧吸罩,研究双热源之间的影响将为研究双热源产生污染气体的捕集提供一定的理论依据.本文在实验与数值模拟误差分析的基础上,运用数值模拟方法研究了在同一局部排风系统中存在两个热源(主热源、辅热源)时,辅热源位置、辅热源初始速度以及辅热源初始温度对侧吸罩流场和排风罩捕集主热源产生污染气体捕集效率的影响.研究结果表明:(1)当辅热源位于主热源与排风罩之间时,随着辅热源初始速度的增加,侧吸罩的捕集效率先增大后减小.最大捕集效率出现在初始速度为1.0 m/s时.(2)当辅热源位于排风罩相对主热源之外时,随着辅热源初始温度从300 K增大到600 K,侧吸罩的捕集效率降低8.36%.
Abstract:
Side suction hoods influenced by muti-heat sources have been extensively adopted in magnesium metal refining plants. However, the combined effects of two heat sources have not been thoroughly studied. In this paper, based on the validation of simulation, the effects of the source position, initial velocity and initial temperature of auxiliary heat source on the efficiency of side suction hood,which used to trap the polluted gas produced by the primary heat source, were studied via numerical simulation for an e xhaust system with two heat source. The results showed that, 1)When the auxiliary heat source lies between the primary heat source and the exhaust hood, by increasing the initial velocity of the auxiliary heat source, the capture efficiency of side suction hood may increase at first and decreases while the maximum efficiency reached 70% at velocity 1.0; 2) When the auxiliary heat source is in the opposite derection that exhaust hood is relative to the primary heat source, by increasing the initial temperature of anxiliary heat source from 300 K to 600 K, the suction-side trapping efficiency was decreased by 8.36%

参考文献/References:

References

[1] 谭良才,张旭,沙高原.大空间中强热源诱导含尘气流控制模型试验研究[J].通风除尘.1997(2):9-13.

TAN Liangcai,ZHANG Xu,SHA Gaoyuan. An experiment study on controlling the dust induced by high temperature heat source in large space[J].Ventilation and Dedusting.1997(2):9-13.

[2] Kee-Chiang C,Kuo-Pao T,You-Hsuan W. Performance of local ventilated hood in a general ventilation working environment[J].ASHRAE Transactions, 2008, 114:424-430.

[3] Chakroun W ,Mir Mujtaba A Q. Flow characteristics of a local exhaust system[J].ASHRAE Transactions, 2003 ,?109:527-539.

[4] 赵荣,赵宇,高红,等.常用局部排风罩调查及卫生学评价[J].中国卫生工程学,2005,4(5):273-275.

ZHAO Rong,ZHAO Yu,GAO Hong,et al. Investigation and hygiene evaluation of common local exhaust hood[J]. Chinese Health Engineering, 2005, 4(5):273-275.

[5] 简瑞民,张旭,沙高原.强热源诱导含尘浮射流的浓度示踪及捕集效率[J].同济大学学报,1999,06:594-598.

JIAN Ruimin,ZHANG Xu,SHA Gaoyuan. Concentration trace and capture efficiency of dust jet induced by high temperature heat source[J]. Tongji University,1999,06:594-598.

[6] 彭泰瑶,邵强.局部排风罩的捕集效率实验[J].通风除尘.1988(3):20-24.

PENG Taiyao,SHAO Qiang. An experiment study on capture efficiency of local exhaust hood[J],Ventilation and Dedusting. 1988(3):20-24.

[7] YAN Fanliao,HUANG Yanqiu ,WANG Yi,et al. Study on Limited flow rate ratio for a Side suction hood above High-temperature polluted airflow[A].Shanghai, Tongji University,2015,The 11th International Conference on Industrial Ventilation.

[8] 陈俊俊,多污染热源置换通风实验研究[D],西安,西安建筑科技大学,2003

CHEN Junjun,The experiment research of displacement ventilation about many polluting heat source[D].Xi’An: Xi’an Univ. of Arch. &Tech,2003.

[9] Donghyun Rim ,Lance Wallace,Steven Nabinger,et al. Reduction of exposure to ultra?ne particles by kitchen exhaust hoods: The effects of exhaust ?ow rates, particle size, and burner position. Science of the Total Environment, 2012, 432:350–356

[10] 中华人民共和国国家职业卫生标准: GBZ2.1-2007 [S].北京:人民卫生出版社,2008

National occupational health standards of People’s Republic of China: GBZ2.1-2007 [S].Beijing:People’s Health Press, 2008

[11] CHEN Q. Comparison of different k-εmodels for indoor air flow computations[J]. Numerical Heat Transfer[J],Part B:Fundamentals,1995, 28(3):353-369.

[12] ROUND O,HAVET M. Computation of the airflow in a pilot scale clean room using k- ε turbulence models[J].

(下转第592页)

International Journal of Refrigeration,2002,25(3): 351-361.

[13] 王怡.黄艳秋.炼铁厂高温烟气流场特性及排风罩优化[J].土木建筑与环境工程,2013(S1):162-166.

WANG Yi, HUANG Yanqiu. Flow field of high-tempera-

ture gases and exhaust hood optimization in ironmaking plant [J]. Journal of Civil, Architectural & Environmental Engineering, 2013 (S1 ) :162-166.

[14] LI Yuguo,NIELSEN P V. CFD and ventilation research[J]. Indoor Air ,2011, 21(6):442-453.

[15] 王怡、疏艺波、黄艳秋. 浮射流速度场和断面流量规律
特性的研究[J].西安建筑科技大学学报(自然科学版),2014, 46(6):839-843.

WANG Yi,SHU Yibo,HUANG Yanqiu.The study on the characteristics of velocity field and section flow rate of buoyant jet [J]. Xi’an Univ. of Arch. &Tech.(Natural Science Edition), 2014, 46 (6):839-843.

[16] 高军. 建筑空间热分层理论及应用研究[D]. 哈尔滨,哈尔滨工业大学,2007.
GAO Jun,Research of the theory of thermal stratification in buildings and its applications[D].Harbin: Harbin In-stitute of Technology,2007.

备注/Memo

备注/Memo:
收稿日期:2015-12-12 修改稿日期:2016-08-15
基金项目:国家自然科学基金重点项目(51238010);国家杰出青年基金项目(51425803);中国博士后科学基金(2015M580823)
作者简介:王怡(1970-),女,教授,博士生导师,主要从事建筑通风理论及其在实际中应用研究. Email:wangyi6920@126.com
更新日期/Last Update: 2016-10-30