[1]马龙潭,*,杨开敏,等.循环喷雾闪蒸影响因素的实验研究[J].山东建筑大学学报,2019,34(06):33-38.[doi:10.12077/sdjz.2019.06.006]
 MA Longtan,*,YANG Kaimin,et al.Experimental investigation on the influencing factors of circulatory spray flash evaporation[J].Journal of Shandong jianzhu university,2019,34(06):33-38.[doi:10.12077/sdjz.2019.06.006]
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循环喷雾闪蒸影响因素的实验研究()
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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06期
页码:
33-38
栏目:
研究论文
出版日期:
2019-12-01

文章信息/Info

Title:
Experimental investigation on the influencing factors of circulatory spray flash evaporation
文章编号:
1673-7644(2019)06-0033-06
作者:
马龙潭1* 杨开敏2 季璨3
(1.山东电力工程咨询院有限公司,山东 济南 250013;2.山东建筑大学 热能工程学院,山东 济南 250101;3.齐鲁工业大学(山东省科学院) 山东省科学院能源研究所,山东 济南 250014)
Author(s):
MA Longtan1 * YANG Kaimin2 JI Can3
(1. Shandong Electric Power Engineering Consulting Institute Co., Ltd., Jinan 250013, China; 2. School of Thermal Engineering, Shandong Jianzhu University, Jinan 250101, China;3. Energy Research Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China)
关键词:
喷雾闪蒸影响因素闪蒸蒸汽流量汽化率
Keywords:
spray flash evaporation influencing factors flow rate of flashed vapor evaporation ratio
分类号:
TK124
DOI:
10.12077/sdjz.2019.06.006
文献标志码:
A
摘要:
闪蒸是液体经历压力突降时的快速汽化现象,循环喷雾闪蒸具有节能环保、可充分利用低品位热能的特点,在高耗能行业的余热回收方面展现出良好的应用前景。文章以闪蒸在余热发电领域的应用为出发点,以工业余热为热源,基于大型闪蒸实验平台,使用控制变量法,进行循环喷雾闪蒸变工况实验,研究液体过热度、闪蒸压力、供水流量、喷射方向和喷嘴尺寸对闪蒸特性的影响,分析闪蒸蒸汽流量和汽化率的变化规律。结果表明:闪蒸蒸汽流量和汽化率随过热度的提高而增大,随闪蒸压力的提高而减小,蒸汽流量随供水流量近似成比例的变化;液体向下喷射的闪蒸效果优于向上喷射,喷嘴尺寸的减小使喷雾液滴粒径减小,缩短了液体在闪蒸罐内停留时间。
Abstract:
Flash evaporation is the instant boiling phenomenon of a liquid caused by an abrupt pressure drop. Circulatory spray flash evaporation is energy-saving and environmentally friendly, and can fully utilize low-grade thermal energy. It is a promising method for waste heat recovery in energy-intensive industries. This study focuses on the application of flash evaporation in waste heat recovery process. A large-scale flash evaporation experimental system is built, which uses industrial waste heat as heat source. Experiments on circulatory spray flash evaporation under various conditions are carried out with the control-variate method. The influence of superheat degree, evaporation pressure, flow rate of supplied water, injecting direction and nozzle size on the characteristics of flash evaporation is investigated. The variation of the flow rate of flashed vapor and the evaporation ratio is analyzed. The results show that both the flow rate of flashed vapor and the evaporation ratio increase with the increase of superheat, and decrease with the elevation of evaporation pressure. The flow rate of flashed vapor is nearly proportional to that of supplied water. Downward injection outperforms upward injection. The reduction in nozzle size reduces the size of droplets in the spray, and at the same time shortens the residence time of the liquid in the flash chamber.

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备注/Memo

备注/Memo:
收稿日期:2019-11-09 基金项目:国家重点研发计划项目(2016YFD0400104);山东省科学院青年科学基金项目(2019QN0021)作者简介:马龙潭(1987-),男,工程师,硕士,主要从事电厂汽机系统设计等方面的研究. E-mail: malongtan@sdepci.com[*通讯作者]??
更新日期/Last Update: 2019-11-18