| Title |
Performance Improvement of a Refrigeration System for an Eco-friendly Refrigerator Truck by Optimizing Heat Exchanger Designs |
| Authors |
Jaebeom Kim ; Soonbum Kwon ; Changho Han ; Heeseok Kim ; Youngjoo Kim ; Yongchan Kim |
| DOI |
https://doi.org/10.6110/KJACR.2023.35.6.275 |
| Keywords |
성능계수; 대체냉매; 최적화; 냉동사이클; 냉동탑차; 시뮬레이션 COP; Low-GWP refrigerant; Optimization; Refrigeration cycle; Refrigerator truck; Simulation |
| Abstract |
An analytical study on the optimization of heat exchanger design parameters of a refrigeration system for a one-ton eco-friendly refrigerator truck was conducted to improve its performance. The components of the refrigeration system were modeled analytically. The developed model was validated by comparing the predicted values with the measured data. The effects of the major design parameters on system performance were analyzed using the developed model. The heat exchangers were optimized according to the geometric parameter to improve system efficiency. The COP of the optimized refrigeration system was an average of 12.5% higher than that of the conventional system. Additionally, a drop-in simulation for the optimized refrigeration system using R455A was conducted to determine an alternative for R404A. The COP of the refrigeration system with R455A (COPR455A) was almost the same as that of the refrigeration system with R404A (COPR404A) because the increase in the heat transfer rate was the same as that of the compressor work. However, the COPR455A was 8.7% higher than the COPR404A at the same heat transfer rate. |