管内垂直降膜绝热吸收评估方法与实验分析

上海交通大学学报（自然版） ›› 2013, Vol. 47 ›› Issue (08): 1264-1270.

管内垂直降膜绝热吸收评估方法与实验分析

林芃1，王如竹2，徐振中2，邵飞1，王吉1

(1. 中国舰船研究设计中心，上海 201108；2. 上海交通大学制冷与低温工程研究所，上海 200240)

收稿日期:2012-07-07 出版日期:2013-08-29 发布日期:2013-08-29

Evaluation Method and Experimental Performance of Inner Vertical Adiabatic Falling Film Absorption

LIN Peng1，WANG Ruzhu2，XU Zhenzhong2，SHAO Fei1，WANG Ji1

(1． China Ship Development and Design Center, Shanghai 201108, China； 2． Institute of Refrigeration and Cryogenics, Shanghai Jiaotong University, Shanghai 200240, China)

Received:2012-07-07 Online:2013-08-29 Published:2013-08-29

摘要/Abstract

摘要：

构建了氨水降膜吸收实验设备，研究垂直管内降膜绝热吸收性能.通过套管换热器调节稀溶液入口过冷度，给予溶液吸收潜力，进行变工况降膜吸收实验.基于传质微分方程推导一种新的舍伍德数计算方法，用于传质性能评估.实验表明,传质速率以及舍伍德数随着雷诺数的增大而增大.增加吸收压力，稀溶液入口过冷度均能强化传质效果.具有过冷度的耦合传热传质过程传质速率及舍伍德数大于单独的过冷绝热吸收或者耦合传热传质吸收.利用实验结果拟合绝热吸收传质舍伍德数方程，可应用于传热传质分离的降膜吸收器热设计.

关键词: 绝热吸收, 过冷, 降膜, 吸收制冷

Abstract:

The performance of NH3-H2O inner vertical adiabatic falling film absorption was studied based on the experimental set-up. The potential of absorption was just given by the inlet sub-cooling of the weak solution. Variable working conditions were performed and tested. A novel evaluation method related to Sherwood number was derived from the conservation and transfer equations, which was used to evaluate the experimental data. The experimental results show that transfer rates and Sherwood numbers increase with the growing of Reynolds numbers. The mass transfer process is enhanced by increasing absorption pressure or inlet sub-cooling. The mass transfer performance of coupled heat and mass transfer combined with inlet sub-cooling is higher than inlet sub-cooling or coupled heat and mass transfer only. Sherwood correlation has been fitted based on the experimental data to evaluate the adiabatic falling film absorption. It could be used in designing falling film absorber whose heat and mass transfer are independent of each other.

Key words: adiabatic absorption, sub-cooling, falling film, absorption refrigeration

中图分类号:

TB 61

林芃1，王如竹2，徐振中2，邵飞1，王吉1. 管内垂直降膜绝热吸收评估方法与实验分析[J]. 上海交通大学学报（自然版）, 2013, 47(08): 1264-1270.

LIN Peng1，WANG Ruzhu2，XU Zhenzhong2，SHAO Fei1，WANG Ji1. Evaluation Method and Experimental Performance of Inner Vertical Adiabatic Falling Film Absorption[J]. Journal of Shanghai Jiaotong University, 2013, 47(08): 1264-1270.

参考文献

［1］Wang R Z, Ge T S, Chen C J, et al. Solar sorption cooling systems for residential applications: Options and guidelines ［J］. International Journal of Refrigeration, 2009, 21: 638660.

［2］赵锐, 程文龙, 江守利, 等. 氨鼓泡吸收的动力学模型及其吸收特性［J］. 工程热物理学报, 2007, 28(1): 2528.

ZHAO Rui, CHENG Wenlong, JIANG Shouli, et al. Study on performance of ammonia bubble absorption ［J］. Journal of Engineering Thermophysics, 2007, 28(1): 2528.

［3］Kang Y T, Akisawa A, Kashiwagi T. Analytical investigation of two different absorption modes: Falling film and bubble types［J］. International Journal of Refrigeration, 2000, 23: 430443.

［4］Kang Y T, Akisawa A, Kashiwagi T. Experimental correlation of combined heat and mass transfer for NH3H2O falling film absorption ［J］. International Journal of Refrigeration, 1999, 22: 250262.

［5］盛伟, 武卫东, 张华, 等. Al2O3纳米颗粒对氨水鼓泡吸收过程的强化影响［J］. 化工学报, 2008, 59(11): 27622767.

SHENG Wei, WU Weidong, ZHANG Hua, et al. Enhancing influence of Al2O3 nanoparticals on ammonia bubble absorption process ［J］. Journal of Chemical Industry and Engineering, 2008, 59(11): 27622767.

［6］Kim J K, Jung Y J, Kang Y T. Absorption performance enhancement by nanoparticles and chemical surfactants in binary nanofluids ［J］. International Journal of Refrigeration, 2007, 30: 5057.

［7］Cerezo J, Bourouis M, Vallès M, et al. Experimental study of an ammoniawater bubble absorber using a plate heat exchanger for absorption refrigeration machines ［J］. Applied Thermal Engineering, 2009, 29: 10051011.

［8］王林. 小型风冷绝热吸收制冷关键技术研究［D］. 杭州：浙江大学机械与能源工程学院，2006.

［9］Conde M. Thermodynamic properties of {NH3+H2O} mixtures for the industrial design of absorption refrigeration equipment ［DB/OL］. (2006) ［20101001］. http://www.mrceng.com.

［10］林芃. 氨水降膜吸收传热传质机理及其在两级风冷吸收制冷中的应用研究［D］. 上海：上海交通大学机械与动力工程学院， 2011.

［11］Kim D S, Ferreira C A I. Analytic modeling of a falling film absorber and experimental determination of transfer coefficients ［J］. International Journal of Heat and Mass Transfer, 2009, 52: 47574765.

［12］Seara J F, Sieres J, Rodríguez C, et al. Ammoniawater absorption in vertical tubular absorbers ［J］. International Journal of Thermal Science, 2005, 44: 277288.

［13］Goel N, Goswami D Y. Analysis of a countercurrent vapor flow absorber ［J］. International Journal of Heat and Mass Transfer, 2005, 48: 12831292.

［14］Kwon K, Jeong S. Effect of vapor flow on the fallingfilm heat and mass transfer of the ammonia/water absorber ［J］. International Journal of Refrigeration, 2004: 27: 955964.

［15］Islam M R, Wijeysundera N E, Ho J C. Evaluation of heat and mass transfer coefficients for fallingfilms on tubular absorbers ［J］. International Journal of Refrigeration, 2003, 26: 197204.

［16］Islam M R, Wijeysundera N E, Ho J C. Simplified models for coupled heat and mass transfer in fallingfilm absorbers ［J］. International Journal of Heat and Mass Transfer, 2004, 47: 395406.

［17］Islam M R, Wijeysundera N E, Ho J C. Heat and mass transfer effectiveness and correlations for counterflow absorbers ［J］. International Journal of Heat and Mass Transfer, 2006, 49: 41714182.

编辑推荐 0

Metrics

阅读次数

全文

297

HTML			PDF

最新录用	在线预览	正式出版	最新录用	在线预览	正式出版
0	0	0	5	0	292

来源	本网站	其他网站

次数	29	268
比例	10%	90%

摘要

789

最新录用	在线预览	正式出版

63	0	726

来源	本网站	其他网站

次数	305	484
比例	39%	61%

[1]	张雨龙，张鹏，马非. 冰晶颗粒的浮升融化过程[J]. 上海交通大学学报, 2020, 54(5): 473-480.
[2]	沈佳瑛，孔维梁，刘洪. 壁面表面能影响冰枝尖端生长机制研究[J]. 上海交通大学学报（自然版）, 2018, 52(8): 918-923.
[3]	胡书凡，孔维梁，刘洪. 基于相场法的不同过冷度冰枝生长形态及速率模拟[J]. 上海交通大学学报（自然版）, 2018, 52(8): 910-917.
[4]	李冬1，张辰1，王福新1，刘洪1，杨坤2. 多段翼型的大粒径过冷水滴结冰特征及气动影响分析[J]. 上海交通大学学报（自然版）, 2017, 51(8): 921-931.
[5]	董建锴1, 姜益强1, 姚杨1, 闫凌2. 空气源热泵过冷蓄能除霜特性试验[J]. 上海交通大学学报（自然版）, 2012, 46(10): 1604-1608.
[6]	杨丽，王文，白云飞. 水平管降膜蒸发器的管束列数优化数值模拟[J]. 上海交通大学学报（自然版）, 2010, 44(01): 101-0105.