Effect of Louvered Positions on Air-Side Heat Transfer in Louvered Fin Heat Exchangers

루우버 위치(位置)가 루우버핀 열교환기(熱交換器)의 공기측열전달(空氣側熱傳達)에 미치는 영향(影響)

A Study has been conducted experimentally on heat transfer characteristics of louvered fin heat exchangers with various louvered positions in air. The experimental results are as follows; 1. Mean heat transfer coefficient is increased with increasing air velocity and decreasing temperature difference. The maximum value of heat transfer coefficient shows at 10㎜ backward louvered fins. 2. Pressure drop is increased with increasing air velocity and apparently depended on the louvered positions at V>10m/sec. 3. $\bar{h}/{\Delta}P$ is decreased with increasing air velocity and its maximum value shows at 10mm forward louvered fins and its minimum value shows at plate fins.