于春健,马学虎,兰忠,吴静波

• 1:大连理工大学化工学院

摘要(Abstract)：

在现代社会中,低温多效蒸发是一种有效的海水淡化方法。在低温多效蒸发海水淡化过程中,操作压力和浓缩海水中NaCl浓度是影响传热效率的重要因素。为了系统地研究操作压力和浓度对于盐水沸腾传热特性的影响,在不同的操作压力下,测定了质量分数为0%～25%的NaCl溶液在光滑的不锈钢管外的沸腾传热特性。实验结果表明,在常压下,NaCl的浓度对沸腾传热的影响不大;在低压条件下,随着NaCl浓度的增加,沸腾传热系数增大。纯水和3.5%盐水的传热系数随系统压力的升高而增大;盐水浓度为7%和15%时,沸腾传热系数随系统压力的升高先降低后又升高;NaCl的浓度达到25%时,传热系数随压力的升高而减小。这说明操作压力和浓度二者之间存在着相互制约的关系。

关键词(KeyWords)： 低压;浓盐水;盐度;池沸腾;传热特性

Abstract:

Keywords:

基金项目(Foundation): 辽宁省教育厅科技计划项目(2008S043);; 教育部新世纪优秀人才资助计划项目(NCET)-05-0280)

作者(Author): 于春健,马学虎,兰忠,吴静波

参考文献(References)：

• [1]YU Rui-xia(余瑞霞),WANG Yue(王越),WANG Shi-chang(王世昌).A review on brine disposal from desalination plants(海水淡化浓盐水排放与处理技术研究概况)[J].Technology of Water Treatment(水处理技术),2005,31(2):6-13.
• [2]YUN Yan-bin(贠延滨),LIU Li-ying(刘丽英),MA Run-yu(马润宇),et al.Study of membrane distillation mechanism for high con-centration NaCl solution(浓盐溶液的膜蒸馏机理研究)[J].J Chem Eng of Chinese Univ(高校化学工程学报),2002,16(4):389-395.
• [3]MA Xue-hu(马学虎),LAN Zhong(兰忠),WANG Si-fang(王四芳),et al.Impact of discharges in seawater desalination on marineenvironment and progress in zero liquid discharge(海水淡化浓盐水排放对环境的影响与零排放技术研究进展)[J].ChemicalIndustry and Engineering Progress(化工进展),2011,3(1):233-242.
• [4]LIU A-long(刘阿龙),XU Hong(徐宏),JIN Wei(金伟),et al.Heat transfer and fouling characteristics of sintered porous surfacetubes in NaCl solution(烧结型表面多孔管传热和结垢特性研究)[J].J East China University of Seicence and Tech-nologe(Natural Science Edition)(华东理工大学学报(自然科学版),2009,35(2):44-52.
• [5]LIU Zhen-hua(刘振华),QIU Yu-hao(秋雨豪).Boiling heat transfer enhancement in compact smooth and enhanced tube bundlessubmerged in salt/water mixtures(紧凑型滚压强化管管束内水和盐水的沸腾强化换热特性)[J].Journal of Shanghai JiaotongUniversity(上海交通大学学报),2000,38(10):1627-1630.
• [6]LüLun-chun(吕伦春),LIU Zhen-hua(刘振华).Critical heat flux of nanofluids during natural convective boiling in vertical tubes(竖直圆管内纳米流体自然对流沸腾的临界热通量研究)[J].J Chem Eng of Chinese Univ(高校化学工程学报),2007,21(5):734-739.
• [7]WANG Shi-ji(王士骥),LIU Zhen-hua(刘振华).Pool boiling heat transfer of nanofluids on a plate surface under sub-atmosphericpressures(低压条件下纳米流体的沸腾换热特性)[J].J Chem Eng of Chinese Univ(高校化学工程学报),2009,23(6):922-926.
• [8]LIN Ji-fang(林纪方),YANG You-lin(杨友麒).Boiling heat transfer for several solid-dissolved solutions(固体溶质溶液的沸腾给热)[J].Journal of Dalian University of Technology(大连工学院学刊),1964(3):21-50.
• [9]Hiroto Sakashita,Ayako Ono.Boiling behaviors and critical heat flux on a horizontal plate in saturated pool boiling of water at highpressures[J].International Journal of Heat and Mass Transfer,2009,52:744-750.
• [10]Watwe A A,Bar-Cohen A,McNeil A.Combined pressure and subcooling effects on pool boiling from a PPGA chip package[J].ASME J Electron Pack,1997,119(2):95-105.
• [11]Rainey K N,You S M,Lee S.Effect of pressure,subcooling,and dissolved gas on pool boiling heat transfer from microporous,square pin-finned surfaces in FC-72[J].Int.J.Heat Mass Transfer,2003,46(1):23-35.
• [12]McGillis W R,Carey V P,Fitch J S,et al.Pool boiling enhancement techniques for water at low pressure[C]//Proceedings,Sev-enth Annual IEEE Semiconductor Thermal Measurement and Management Symposium,IEEE,Phoenix,AZ:1991:64-72.
• [13]SHA Yong(沙勇),CHENG Hong(成弘),YU Guo-cong(余国琮).Marangoni effect in the mass and heat transport processes(质量、热量传递过程中的Marangoni效应)[J].Progress In Chemistry(化工进展),2003,15(1):9-17.
• [14]Taylor R P,Hodge B K,James C A.Estimating uncertainty in thermal systems analysis and design[J].Applied Thermal Engineer-ing,1999,19:51-73.
• [15]Nishikawa K,Fujita Y,Ohta H.Effect of system pressure and surface roughness on nucleate boiling heat transfer[J].Memoirs Fac-ulty Eng Kyushu Univ,1982,42(2):95-111.