Experimental study of heat transfer of corrugated channels

• Main Authors: Sun, Y.M., 孫禹銘
• Other Authors: Su, C.C.
• Format: Others
• Language: zh-TW
• Published: 2001
• Online Access: http://ndltd.ncl.edu.tw/handle/37754120703168538823

碩士 === 國立臺灣大學 === 機械工程學研究所 === 89 === This experimental study investigated the heat transfer characteristics of the corrugated channel appeared in plate heat exchangers (PHEs). A flow channel with wavy surfaces was constructed within which air was passed through. The temperature of the wall was maintained constant. Starting from the entrance, the air temperatures within two wavelengths were measured at about 300 locations. The Reynolds number of air was varied from 300 to 9000. Results show that both the average and local Nusselt numbers increase with the Reynolds number. However, the local Nusselt number decreases with the distance from the entrance and is greater at sections near the crest. In addition, both the average and local Nusselt numbers are apparently greater in the entrance region.