The Opitamal Analysis of Thermal Performance in Crossflow Heat Exchanger

• Main Authors: Wen-Long Liaw, 廖文龍
• Other Authors: Hong-Sen Kou
• Format: Others
• Language: en_US
• Published: 1993
• Online Access: http://ndltd.ncl.edu.tw/handle/02736400851773476729

碩士 === 大同工學院 === 機械工程研究所 === 81 === The present study is investigate the effectiveness of direct transfer type, crossflow heat exchanger with neither fluid mixed due to the influnce of the aspect ratio, capacity ratio and conductance ratio. FAM (finite analytic method) is utilized in the two fluid flows and FDM(finite difference method)is utilized in the separator sheet to analyze the exchanger effectiveness.Numerical results show the comparison between he finite analytic method and finite difference method in the different boundary form of the insulatededge and the different node-point in the separator sheet. The present study is also to propose the useful modification in the finite analytic method. Next,the optimun aspect ratio is found with various parameters like as capacity rate and conductance ratio.