| Title |
Experimental Study on Flow Distribution in PCHE Using Flow Visualization |
| Authors |
Hanee Seol ; Sangho Sohn ; Kong Hoon Lee ; Jungchul Kim |
| DOI |
https://doi.org/10.6110/KJACR.2023.35.1.001 |
| Keywords |
유동분배; 유동 가시화; 미세 채널; 입자; PCHE(인쇄기판형 열교환기) Flow distribution; Flow visualization; Micro channel; Particle; PCHE |
| Abstract |
PCHE, Printed Circuit Heat Exchanger, is widely used for industrial applications with increasing demand in extreme environments. As interest in hydrogen for future fuel is increased, the interest in PCHE is also increased. In this study, we focused on the flow distribution in channels of PCHE. Although flow distribution has been employed a lot of times for decades, there are few reliable studies based on experimental results that can be directly applied in actual industrial fields. Here, we introduce experimental results about flow distribution by flow visualization. Effects of flow rates and the verticality are addressed to clarify the difference in distribution. When the flow rate is low, the flow speed difference between channels is not significantly large. If it becomes larger, the difference becomes large. Moreover, when inlet and outlet pipes are installed at a slight angle, back flow is observed. The speed profile of the tilted case in high flow rate is not easily predicted. Although the tilting angle looks very small, the measured speed profile can be completely different. |