氨水鼓泡吸收强化实验中的倒吸现象及存在机理分析

设计和建立了纳米流体氨水鼓泡吸收强化的实验系统．实验中倒吸现象影响着实验系统的稳定性和实验结果的真实性．实验发现：在氨气定流量条件下，在敞开式鼓泡吸收实验时，不容易发生倒吸现象，在吸收器真空状态吸收实验时，容易发生倒吸现象；在定压实验且压力为130kPa以上的真空吸收实验时，不容易发生倒吸现象．结合实验现象，从化学动力学角度，对倒吸现象发生可能存在的机理进行了分析．同时发现，纳米流体对氨水与氨气的化学反应转化速率并没有多大影响，说明纳米流体对氨水的强化吸收是一种物理现象．

Possible mechanism analysis on reverse absorption phenomena in enhanced experiment of ammonia bubble absorption

An ammonia-water bubble absorption experimental system for researching the enhanced effect of nanofluid was devised and established.The system stability and the reality of the experimental results are influenced by reverse absorption phenomena.It's found that,when developing constant flow rate experiments,in open ammonia-water bubble absorption process,the reverse absorption phenomena do not exist,while easily take place if keeping the absorber in vacuum condition;when developing isobaric experiments,the ph...