As an innovative thermal energy technology, the spray-type packed bed has advantages of high efficiency and low cost. A liquid distributor is the key component for the spray-type packed bed for scattering heat-transfer liquid drops evenly. In this study, the distribution performance and pressure drop of the perforated plate distributors of different orifice diameters were studied experimentally. The experimental results indicate that orifice diameter has a greater effect on the distribution performance compared to flow rate. With an increase in flow rate, the flow pattern through the distributor changes from the uncovered drop to the covered drop and then to the jet flow. The covered drop pattern shows the best performance with a good distribution and a small pressure drop simultaneously, which is the design and optimization principle of the distributor for a spray-type packed bed.

喷雾式填充床作为一种创新的热能技术，具有高效、低成本的优点。液体分布器是喷雾式填充床的关键部件，用于均匀分散传热液滴。本研究对不同孔口直径的孔板分配器的分配性能和压降进行了实验研究。实验结果表明，与流量相比，孔口直径对分配性能的影响更大。随着流速的增加，通过分配器的流型从未覆盖的液滴变为覆盖的液滴，然后变为射流。覆盖的下降模式显示出最佳性能，同时具有良好的分布和小压降，