CAJ | 학술논문

搭建了管排和填料交替结构中液膜流动的可视化实验装置，并对管排和V形不锈钢丝网填料交替结构以及无丝网的光管排中的溴化锂溶液流动进行了观察实验。通过对比溴化锂溶液在单列光管排和管排加丝网填料交替结构中的流动特征，分析了V形丝网填料对溶液流动的引流、布液和收集飞溅液体的有益作用。溴化锂溶液在交替结构中流动时，溶液在填料上依附于丝网表面向下流淌，并由丝网填料导流至下层管子上端。这种结构能够加强溶液混合，减小溶液的飞溅率和管子表面的干斑比例，有利于增加溶液与蒸汽接触的时间和传质面积，从而增强溶液吸收的驱动势，有利于吸收传热传质的强化。
탑건료관배화전료교체결구중액막류동적가시화실험장치，병대관배화V형불수강사망전료교체결구이급무사망적광관배중적추화리용액류동진행료관찰실험。통과대비추화리용액재단렬광관배화관배가사망전료교체결구중적류동특정，분석료V형사망전료대용액류동적인류、포액화수집비천액체적유익작용。추화리용액재교체결구중류동시，용액재전료상의부우사망표면향하류창，병유사망전료도류지하층관자상단。저충결구능구가강용액혼합，감소용액적비천솔화관자표면적간반비례，유리우증가용액여증기접촉적시간화전질면적，종이증강용액흡수적구동세，유리우흡수전열전질적강화。
A visualization test rig was built to observe the LiBr solution flowing in a column of tubes and V-shaped mesh alternating structure.The visual experimental investigation was conducted for the alternating structure and the column of bare tubes.The beneficial impacts of the V-shaped mesh packing inserts between tubes in collecting, guiding and distributing the fluid flow were demonstrated and the different features of LiBr solution flow patterns were investigated in bare tube column and the alternating structure.It is shown that when the LiBr solution flows down from the outer surface of the upper tube, the V-shaped mesh packing can guide and distribute the fluid well onto the lower tube , which greatly decrease both the spatter loss rate of splashed liquid and the dry spots ratio of the lower tube surface and promote solution mixing as well.All these features can expand the absorption time and area, enhance the absorption driving potential, and therefore, enhance the absorption heat and mass transfer.