NaCl溶液静态闪蒸的蒸发特性

doi:10.3969/j.issn.0438-1157.2013.11.025

化工学报 ›› 2013, Vol. 64 ›› Issue (11): 4068-4073.DOI: 10.3969/j.issn.0438-1157.2013.11.025

NaCl溶液静态闪蒸的蒸发特性

杨庆忠¹, 刘光耀², 张丹¹, 赵冰超¹, 严俊杰¹

1. 西安交通大学动力工程多相流国家重点实验室, 陕西西安 710049;
2. 华电电力科学研究院, 浙江杭州 310030

收稿日期:2013-03-14 修回日期:2013-07-24 出版日期:2013-11-05 发布日期:2013-11-05
通讯作者: 严俊杰
作者简介:杨庆忠(1987-),男,硕士研究生。
基金资助:
国家重点基础研究发展计划项目(2009CB219803);国家自然科学基金项目(50976089,51125027)。

Evaporation characteristics of static flash evaporation of aqueous NaCl solution

YANG Qingzhong¹, LIU Guangyao², ZHANG Dan¹, ZHAO Bingchao¹, YAN Junjie¹

1. State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China;
2. China Hua Dian Electric Research Institute, Hangzhou 310030, Zhejiang, China

Received:2013-03-14 Revised:2013-07-24 Online:2013-11-05 Published:2013-11-05
Supported by:
supported by the National Basic Research Program of China(2009CB219803)and the National Natural Science Foundation of China(50976089,51125027).

摘要/Abstract

摘要： 对不同初始条件下NaCl溶液静态闪蒸过程中蒸发质量的变化规律进行了实验研究,实验过程中溶液初始质量分数为5%～26%,初温为74～104℃,初始液位高度为0.1～0.3 m,过热度为0.79～42 K。结果表明:在以ΔT_s为过程参量时,溶液闪蒸蒸发质量随NaCl初始质量分数的增加明显下降;以ΔT为过程参量时,相同初始液位高度,不同初始质量分数NaCl溶液闪蒸蒸发质量相差较小;增加初始液位高度虽可增加总蒸发质量,但使单位质量溶液闪蒸蒸发质量下降;闪蒸蒸发质量随过热度增大而呈近似线性增加。综合分析静态闪蒸过程中主要过程参量对蒸发质量的影响,在实验基础上,提出蒸发质量的量纲1关联式。

关键词: 静态闪蒸, NaCl溶液, 蒸发质量, 过程参量

Abstract: Vapor quality in static flash evaporation was studied experimentally,using aqueous solution of NaCl at a mass fraction range of 5%-26%,an initial temperature range of 74-104℃,an initial aqueous solution height range of 0.1-0.3 m,and a superheated range of 0.79-42 K.The results showed that increasing concentration of aqueous NaCl solution reduced the vapor quality at a given initial solution temperature and a final equilibrium flash chamber pressure.The effect of concentration became weak at a given superheat(ΔT)and the same aqueous solution height.Vapor quality increased with increasing initial aqueous solution height,but at the same time,vapor quality produced by per unit mass of aqueous NaCl solution decreased.Vapor quality increased linearly with increasing superheat.Based on the experimental results,the dimensionless correlation for vapor quality in static flash evaporation was established.

Key words: static flash evaporation, aqueous NaCl solution, vapor quality, process variables

中图分类号:

TK124

杨庆忠, 刘光耀, 张丹, 赵冰超, 严俊杰. NaCl溶液静态闪蒸的蒸发特性[J]. 化工学报, 2013, 64(11): 4068-4073.

YANG Qingzhong, LIU Guangyao, ZHANG Dan, ZHAO Bingchao, YAN Junjie. Evaporation characteristics of static flash evaporation of aqueous NaCl solution[J]. CIESC Journal, 2013, 64(11): 4068-4073.

参考文献 20

[1]	Yan Junjie,Shao Shufeng,Wang Jinhua,Liu Jiping. Improvement of a multi-stage flash seawater desalination system for cogeneration power plants[J].Desalination,2007,217(1/2/3):191-202
[2]	Zotarelli M F,Porciuncula B D A,Laurindo J B.A convective multi-flash drying process for producing dehydrated crispy fruits[J].Journal of Food Engineering,2012,108(4):523-531
[3]	Kumar V,Prud'home R K.Nanoparticle stability:processing pathways for solvent removal[J].Chemical Engineering Science,2009, 64(6):1358-1361
[4]	Ho Kon Tiat V,Sebastian P,Quirante T.Multi-objective optimization of the design of two-stage flash evaporators(Ⅰ):Process modeling[J].International Journal of Thermal Sciences,2010,49(12):2453-2458
[5]	Luo Chao,Huang Lichang,Gong Yulie,Ma Weibin. Thermodynamic comparison of different types of geothermal power plant systems and case studies in China[J].Renewable Energy,2012,48:155-160
[6]	Miyatake O,Mutakami K,Kawata Y,Fujii T. Fundamental experiments with flash evaporation[J].Heat Transfer-Jap. Res.,1973,2(4):89-100
[7]	Miyatake O,Fujii T,Tanaka T,Nakaoka T.Flash evaporation phenomena of pool water[J].Heat Transfer-Jap.Res.,1977,6(2):13-24
[8]	Zhang Dan,Chong Daotong,Yan Junjie,Zhao Bingchao. Experimental study on static flash evaporation of aqueous NaCl solution[J].International Journal of Heat and Mass Transfer,2012,55(23/24):7199-7206
[9]	Zhang Dan,Chong Daotong,Yan Junjie,Zhao Bingchao. Experimental study on static flash evaporation of aqueous NaCl solution at different flash speed:heat transfer characteristics[J].International Journal of Heat and Mass Transfer,2013,65:584-591
[10]	Kim J L,Lior N,Some critical transitions in pool flash evaporation[J].International Journal of Heat and Mass Transfer,1997,40(10):2363-2372
[11]	Jin W X,Low S C.Investigation of single-phase flow patterns in a model flash evaporation chamber using PIV measurement and numerical simulation[J].Desalination,2002,150(1):51-63
[12]	Lior N,Nishiyama E.The effect of gas bubbles on flash evaporation[J].Desalination,1983,45(2):231-240
[13]	Cipollina A,Micale G,Rizzuti L.Investigation of flash phenomena in MSF chambers[J].Desalination,2007,216(1/2/3):183-195
[14]	Yan Junjie,Zhang Dan,Chong Daotong,Wang Guifang. Experimental study on static/circulatory flash evaporation[J].International Journal of Heat and Mass Transfer,2010,53(23/24):5528-5535
[15]	Gopalakrishna S,Purushothaman V M,Lior N.An experimental study of flash evaporation from liquid pools[J].Desalination,1987,65(11):139-151
[16]	Saury D,Harmand S,Siroux M.Flash evaporation from a water pool:influence of the liquid height and of the depressurization rate[J].International Journal of Thermal Science,2005,44(10):953-965
[17]	Zhang Dan,Chong Daotong,Yan Junjie,Zhang Yousen. Study on steam-carrying effect in static flash evaporation[J].International Journal of Heat and Mass Transfer,2012,55(17/18):4487-4497
[18]	Saury D,Harmand S,Siroux M.Experimental study of flash evaporation of a water film[J].International Journal of Heat and Mass Transfer,2002,45(16):3447-3457
[19]	Moffat R J.Contributions to the theory of single-sample uncertainty analysis[J].Journal of Fluid Engineering-Transactions of the ASME,1982,104:250-260
[20]	Miyatake O,Tanaka I,Lior N.Bubble growth in superheated solutions with a non-volatile solute[J].Chemical Engineering Science,1994,49(9):1301-1312

NaCl溶液静态闪蒸的蒸发特性

Evaporation characteristics of static flash evaporation of aqueous NaCl solution

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