| Title |
Design Optimization of Heat Exchanger for Cooling of Power Generator using Numerical Analysis |
| Authors |
Dong-Soon Jeon ; Ji-Woon Ko |
| DOI |
https://doi.org/10.6110/KJACR.2020.32.5.223 |
| Keywords |
DOE; Heat exchanger; Power generator; Optimization design DOE; Heat exchanger; Power generator; Optimization design |
| Abstract |
In this study, numerical analysis investigations were conducted on the design optimization of a heat exchanger for the cooling of a power generator. A heat exchanger using coolant was selected after investigating the suitability of cooling methods applicable to power generator cooling. The fractional factorial design of the experiment and response surface method were used for the optimization process. Minitab and Design Experts, which are statistical programs, were used to establish the analysis conditions and analyze the results. The heat transfer rate of the heat exchanger, the pressure drop of the coolant, and the efficiency of the heat exchanger were selected as the heat exchanging performance index. The first optimization step was conducted to derive the main design factors that could influence the heat exchanging performance. The main derived design factors were the width and height of the heat exchanger channel and the volumetric flow of the coolant. The second optimization step was conducted to optimize the main design factors derived in the first optimization step. Although the pressure drop somewhat increased compared to the standard condition, the heat transfer rate and efficiency increased by 1.15 kW and 6.28%, presenting the optimized heat exchanger shape and conditions. |