文档介绍：氧化锌纳米流体对氨水降膜吸收影响的实验研究

刘四美..武卫东..武润宇..韩志明

(上海理工大学能源与动力工程学院,)

摘要研究了不同浓度的 ZnO 纳米流体在定吸收器内初始压力时的吸收效果,结果表明:不同浓度的纳
米流体体现出对氨水降膜吸收强化的效果有所不同,随着 ZnO 纳米流体浓度的增大对氨水降膜吸收的强化
影响先增大后减小且在浓度为 %时强化效果最佳,从实验还可看出,氨水基液浓度的增加使氨气的吸
收量逐渐减小,但纳米流体的添加均可使吸收量得到不同程度的提高,纳米流体的加入还可放缓由于氨水
基液浓度增高引起的吸收速率降低的速度,且强化吸收的最佳纳米流体浓度不随氨水基液浓度的改变而改
变。
关键词纳米流体降膜吸收强化

EXPERIMENTAL STUDY ON THE EFFECT OF ZnO NANOFLUID ON
AMMONIA FALLING FILM ABSORPTION

Liu Simei Wu Weidong Wu Runyu Han Zhiming
(University of shanghai for science and technology School of Energy & Power Engineering, shanghai 200093)

Abstract The absorptive capacity of ZnO nanofluid with different concentrations was experimentally studied at
a constant initial absorber pressure. The results indicated that: nanofluid with different concentrations could
reflect different enhancing effects on ammonia/water falling-film absorption performance, with the concentration
of ZnO nanofluid increasing, the enhancing influences on ammonia/water falling-film absorption increased early,
then decreased and the optimal one was obtained at a concentration of %. Besides, with the concentration of
ammonia-based solution increasing the ammonia gas absorptive amount decreased gradually, but the addition of
nanofluid could all improve absorptive amount to varying degrees, and could also slow down the decreasing speed