蒸汽浸没射流冷凝特性实验研究
收稿日期: 2020-09-21
网络出版日期: 2022-01-21
基金资助
国家重点研发计划(2017YFC0307800/06);国家自然科学基金资助项目(51806141)
Experimental Study on Condensation of Steam Jet Injection in Submerged Condition
Received date: 2020-09-21
Online published: 2022-01-21
针对直接接触冷凝压力脉动与汽羽形态在单孔鼓泡器结构下的特性开展实验研究.基于高速摄像和高频压力传感器实现汽羽形态瞬时压力的同步测量,获得蒸汽质量流率及水箱温度对直接接触冷凝特性的影响规律,建立冷凝相图.分析不同冷凝区域瞬时压力与汽羽形态变化过程的对应关系,发现压力高频振荡与脱离气泡溃灭同时出现,脱离气泡溃灭后的冷凝消失过程伴随着压力波动强度的指数型振荡衰减.获得冷凝振荡区与稳定冷凝区的汽羽长度变化规律,发现在冷凝振荡区内汽羽长度随流率及温度的上升而增加;进入稳定冷凝区时,汽羽长度发生突降,而后继续随流率及温度的上升而增加.研究结果对鼓泡器在蒸汽排放装置上的工程应用具有一定的参考价值.
张伟, 蒋朝飞, 叶亚楠, 王晓雁, 龚自力, 胡晨, 肖瑶, 顾汉洋 . 蒸汽浸没射流冷凝特性实验研究[J]. 上海交通大学学报, 2022 , 56(1) : 1 -13 . DOI: 10.16183/j.cnki.jsjtu.2020.302
An experimental study is conducted to find the characteristics of steam plume and pressure oscillation on direct contact condensation by a side-hole sparger. Synchronal measuring of transient pressure of the steam plume is gained from the high-speed camera and high-pressure sensor respectively. The influence of steam mass flux and water temperature on direct contact condensation characteristic are presented and its regime map is plotted. Then, the dynamic connections of transient pressure and steam plume in different condensation regimes are analyzed. It is found that high frequency pressure oscillation and the collapse of detached bubbles occur at the same time. Together with the condensing and disappearing process of the collapse of detached bubbles, the intensity of pressure oscillation decays exponentially in a vibration way. The changing trends of steam plume length in condensation oscillation regime and stable condensation regime are also obtained, which shows that the steam plume increases with the steam mass flux and the temperature in the condensation oscillation regime. When entering the stable condensation regime, the steam plume suddenly decreases and then increases with the temperature and the steam mass flux. The research results are useful for the engineering application of sparger in steam emission devices.
| [1] | PATEL G, TANSKANEN V, HUJALA E, et al. Direct contact condensation modeling in pressure suppression pool system[J]. Nuclear Engineering and Design, 2017, 321:328-342. |
| [2] | 黄雄, 吕雪峰, 李依霖, 等. AP1000核电厂自动卸压系统功能分析[J]. 热力发电, 2016, 45(5):84-87. |
| [2] | HUANG Xiong, LV Xuefeng, LI Yilin, et al. Function analysis for automatic depressurization system in AP1000 nuclear power plant[J]. Thermal Power Generation, 2016, 45(5):84-87. |
| [3] | DE WITH P A, CALAY R K, DE WITH G. Three-dimensional condensation regime diagram for direct contact condensation of steam injected into water[J]. International Journal of Heat and Mass Transfer, 2007, 50(9/10):1762-1770. |
| [4] | CHO S, CHUN S Y, BAEK W P, et al. Effect of multiple holes on the performance of sparger during direct contact condensation of steam[J]. Experimental Thermal and Fluid Science, 2004, 28(6):629-638. |
| [5] | ZHAO Q B, HIBIKI T. Review: Condensation regime maps of steam submerged jet condensation[J]. Progress in Nuclear Energy, 2018, 107:31-47. |
| [6] | XU Q, GUO L J. Direct contact condensation of steam jet in crossflow of water in a vertical pipe. Experimental investigation on condensation regime diagram and jet penetration length[J]. International Journal of Heat and Mass Transfer, 2016, 94:528-538. |
| [7] | XU Q, YE S Y, CHEN Y S, et al. Condensation regime diagram for supersonic and subsonic steam jet condensation in water flow in a vertical pipe[J]. Applied Thermal Engineering, 2018, 130:62-73. |
| [8] | LI W C, MENG Z M, SUN Z N, et al. Investigations on the penetration length of steam-air mixture jets injected horizontally and vertically in quiescent water[J]. International Journal of Heat and Mass Transfer, 2018, 122:89-98. |
| [9] | YANG X P, LIU J P, FU P F, et al. Experimental and theoretical study of pressure oscillation of unstable steam-air jet condensation in water in a rectangular channel[J]. International Journal of Multiphase Flow, 2019, 119:14-27. |
| [10] | LI S Q, LU T, WANG L, et al. Experiment study on steam-water direct contact condensation in water flow in a Tee junction[J]. Applied Thermal Engineering, 2017, 120:99-106. |
| [11] | CHONG D T, ZHAO Q B, YUAN F, et al. Research on the steam jet length with different nozzle structures[J]. Experimental Thermal and Fluid Science, 2015, 64:134-141. |
| [12] | WU X Z, YAN J J, SHAO S F, et al. Experimental study on the condensation of supersonic steam jet submerged in quiescent subcooled water: Steam plume shape and heat transfer[J]. International Journal of Multiphase Flow, 2007, 33(12):1296-1307. |
| [13] | KIM Y S, YOUN Y J. Experimental study of turbulent jet induced by steam jet condensation through a hole in a water tank[J]. International Communications in Heat and Mass Transfer, 2008, 35(1):21-29. |
| [14] | PARK C K, SONG C H, JUN H G. Experimental investigation of the steam condensation phenomena due to a multi-hole sparger[J]. Journal of Nuclear Science and Technology, 2007, 44(4):548-557. |
| [15] | AYA I, NARIAI H. Boundaries between regimes of pressure oscillation induced by steam condensation in pressure suppression containment[J]. Nuclear Engineering and Design, 1987, 99:31-40. |
| [16] | CHO S, SONG C H, PARK C K,, et al. Experimental study on dynamic pressure pulse in direct contact condensation of steam discharging into subcooled water [EB/OL]. (1998-01-20) [2020-08-01]. https://www.researchgate.net/publication/285905201_Experimental_study_on_dynamic_pressure_pulse_in_direct_contact_condensation_of_steam _discharging_into_subcooled_water. |
| [17] | GREGU G, TAKAHASHI M, PELLEGRINI M, et al. Experimental study on steam chugging phenomenon in a vertical sparger[J]. International Journal of Multiphase Flow, 2017, 88:87-98. |
| [18] | WANG L T, YUE X Y, CHONG D T, et al. Experimental investigation on the phenomenon of steam condensation induced water hammer in a horizontal pipe[J]. Experimental Thermal and Fluid Science, 2018, 91:451-458. |
| [19] | KERNEY P J, FAETH G M, OLSON D R. Penetration characteristics of a submerged steam jet[J]. AIChE Journal, 1972, 18(3):548-553. |
| [20] | XU Q, GUO L J, CHANG L. Mechanisms of pressure oscillation in steam jet condensation in water flow in a vertical pipe[J]. International Journal of Heat and Mass Transfer, 2017, 110:643-656. |
| [21] | XU Q, GUO L J, ZOU S F, et al. Experimental study on direct contact condensation of stable steam jet in water flow in a vertical pipe[J]. International Journal of Heat and Mass Transfer, 2013, 66:808-817. |
| [22] | ZHAO Q B, CHEN W X, YUAN F, et al. Pressure oscillation and steam cavity during the condensation of a submerged steam jet[J]. Annals of Nuclear Energy, 2015, 85:512-522. |
| [23] | CHONG D T, ZHAO Q B, YUAN F, et al. Experimental and theoretical study on the second dominant frequency in submerged steam jet condensation[J]. Experimental Thermal and Fluid Science, 2015, 68:744-758. |
| [24] | QIU B B, YAN J J, LIU J P, et al. Experimental investigation on the second dominant frequency of pressure oscillation for sonic steam jet in subcooled water[J]. Experimental Thermal and Fluid Science, 2014, 58:131-138. |
| [25] | CHUN M H, KIM Y S, PARK J W. An investigation of direct condensation of steam jet in subcooled water[J]. International Communications in Heat and Mass Transfer, 1996, 23(7):947-958. |
| [26] | HONG S J, PARK G C, CHO S, et al. Condensation dynamics of submerged steam jet in subcooled water[J]. International Journal of Multiphase Flow, 2012, 39:66-77. |
| [27] | 张社荣, 孔源, 王高辉. 水下和空中爆炸冲击波传播特性对比分析[J]. 振动与冲击, 2014, 33(13):148-153. |
| [27] | ZHANG Sherong, KONG Yuan, WANG Gaohui. Comparative analysis on propagation characteristics of shock wave induced by underwater and air explosions[J]. Journal of Vibration and Shock, 2014, 33(13):148-153. |
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