Effect of inclination angle on free convection thermal performance of louver finned heat exchanger |
| |
| Affiliation: | 1. Mae Moh Training Center, Electricity Generating Authority of Thailand, Mae Moh, Lampang 52000, Thailand;2. Department of Mechanical Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai 50200, Thailand;3. Energy and Resources Laboratories, Industrial Technology Research Institute, Hsinchu 310, Taiwan, ROC;1. Building Physics Section, Department of Civil Engineering, KU Leuven, Kasteelpark Arenberg 40 – Box 2447, 3001 Heverlee, Belgium;2. Department of Architecture, National University of Singapore, 4 Architecture Drive, 117 566 Singapore, Singapore;1. Department of Mechanical Engineering, Korea University, Anam-Dong, Sungbuk-Ku, Seoul 136-713, Republic of Korea;2. Department of Mechanical Engineering, Chosun University, Seosuk-Dong, Dong-Ku, Kwangju 501-753, Republic of Korea;1. Department of Mechanical and Aerospace Engineering, Malek-Ashtar University of Technology, P.O. Box 83145/115, Shahin-Shahr, Isfahan, Iran;2. Department of Mechanics, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran |
| |
| Abstract: | The effect of inclination angle on the louver finned tube heat exchanger subject to natural convection condition is reported in this study. It is found that the inclination angle plays an importance role on the performance of the louver finned heat exchanger. Performance of the heat exchanger is associated with the interactions between fin, louver, tube, and inclination angle. The heat transfer performance generally decreases with the rise of the inclination angle. This decrease of heat transfer performance is due to the blockage fin and its reversed heat dissipating direction against the raising air. However, at an inclination angle such as 30–45°, a considerable increase of heat transfer performance is seen. This is because appreciable amount of air flow was directed by the louver, causing a “louver-directed” phenomenon as that of in forced convection. With a further increase of inclination angle, the blockage effect caused by the fin is so strong as to offset the “louver-directed” phenomenon. Unlike those shown in force convection, the heat transfer performance decreased with the number of tube row. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
