能源塔波纹填料间气液两相热质交换模拟
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摘要
为了提高能源塔吸热过程塔内波纹填料间液相降膜与逆流气相的热质交换性能,该文分析了波纹填料间气液两相热质交换过程,建立了波纹填料间气液两相逆流接触热质交换模型,模拟了不同气液相入口参数时填料间气液两相热质交换过程,发现相较于改变其它气液相入口参数,增大气相入口流量能在显著提高气液两相间传热传质量的同时减小潜热比,从提高换热量并减缓溶液稀释的角度出发,是改善能源塔换热性能的好方法。
In order to improve the heat and mass transfer performance of the liquid falling film and the countercurrent gas in the corrugated packing during the heat absorbing process of the energy tower.The heat and mass transfer model of countercurrent gas-liquid in corrugated packing is established based on a detailed analysis.The heat and mass transfer processes with different inlet parameters in the packing are simulated.It is found that compared with the variation of the other gas-liquid inlet parameters,the increase of the inlet gas flow can significantly improve the performance of the energy tower while increasing the heat transfer rate.It is a good method to improve the heat transfer performance of energy tower based on the ability to increase the heat transfer of the gas and liquid to slowdown the dilution of the solution.
In order to improve the heat and mass transfer performance of the liquid falling film and the countercurrent gas in the corrugated packing during the heat absorbing process of the energy tower.The heat and mass transfer model of countercurrent gas-liquid in corrugated packing is established based on a detailed analysis.The heat and mass transfer processes with different inlet parameters in the packing are simulated.It is found that compared with the variation of the other gas-liquid inlet parameters,the increase of the inlet gas flow can significantly improve the performance of the energy tower while increasing the heat transfer rate.It is a good method to improve the heat transfer performance of energy tower based on the ability to increase the heat transfer of the gas and liquid to slowdown the dilution of the solution.
引文
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[2]贾雪迎,梁坤峰,王林,等.带有能源塔的自复叠热泵系统及其热力分析[J].制冷技术,2015,43(8):77-82.Jia Xueying,Liang Kunfeng,Wang Lin,et al.Thermodynamic analysis of heat pump system with energy tower based on auto cascade refrigeration circle[J].Refrigeration,2015,43(8):77-82.
[3]Tan Kunxiong,Deng Shiming.A method for evaluating the heat and mass transfer characteristic in a reversibly used water cooling tower for heat recovery[J].International Journal of Refrigeration,2002,25(5):552-561.
[4]Tan Kunxiong,Deng Shiming.A numerical analysis of heat and mass transfer inside a reversibly used cooling tower[J].Building and Environment,2003,38(1):91-97.
[5]Wen Xiantai,Liang Caihua,Zhang Xiaosong.Experimental study on heat transfer coefficient between air and liquid in the cross-flow heat-source tower[J].Building and Environment,2012,57:205-213.
[6]Wu Jiasheng,Zhang Guoqiang,Zhang Quan,et al.Artificial neural network analysis of the performance characteristics of a reversibly used cooling tower under cross flow conditions for heat pump heating system in winter[J].Energy and Buildings,2011,43(7):1685-1693.
[7]余延顺,张少凡.无压尾水洞引风喷淋串联空气处理系统特性研究[J].南京理工大学学报,2009,33(6):745-750.Yu Yanshun,Zhang Shaofan.Performance of series airhandling system of spray and tailrace tunnel ventilation[J].Journal of Nanjing University of Science and Technology,2009,33(6):745-750.
[8]赵思昆,刘巍,高文义,等.波纹气分板流化床干燥玉米膏的热效率[J].南京理工大学学报,2012,36(1):147-151.Zhao Sikun,Liu Wei,Gao Wenyi,et al.Heat efficiency of drying corn paste in fluidized bed with corrugated gas distributor[J].Journal of Nanjing University of Science and Technology,2012,36(1):147-151.
[9]杨新飞,郭延柱,任丽,等.降膜蒸发器传热传质与流动过程数值模拟[J].山东建筑大学学报,2016,31(1):14-18.Yang Xinfei,Guo Yanzhu,Ren Li,et al.Numerical study on flow,heat and mass transfer characteristics of horizontal-tube falling-film evaporators[J].Journal of Shandong Jianzhu University,2016,31(1):14-18.
[10]王世政,牛润萍,刘斌.平板降膜除湿场协同性分析[J].建筑科学,2017,33(2):83-88.Wang Shizheng,Niu Runping,Liu Bin,et al.Field synergy analysis of film falling desiccant[J].Building Science,2017,33(2):83-88.
[11]程友良,杨星辉,韩富强.正弦波形填料基底上液膜的研究及热经济性分析[J].动力工程学报,2015,35(3):230-236.Cheng Youliang,Yang Xinghui,Han Fuqiang.Study of liquid film flowing on the packing with sine wave form and related thermal economic analysis[J].Journal of Chinese Society of Power Engineering,2015,35(3):230-236.
[12]Xu Yuanyuan.Computational approach to characterize the mass transfer between the counter-current gas-liquid flow[J].Chem Eng Technol,2009,32:1227-1235.