Author/Authors :
Chien, Nguyen Ba Department of Refrigeration and Air-conditioning Engineering - Hanoi University of Science and Technology, Hanoi, Vietnam , Vinh, Nguyen Dinh Department of Refrigeration and Air-conditioning Engineering - Hanoi University of Science and Technology, Hanoi, Vietnam , Khue, Vu Huy Department of Refrigeration and Air-conditioning Engineering - Hanoi University of Science and Technology, Hanoi, Vietnam , Oh, Jong-Taek Department of Refrigeration and Air-conditioning Engineering - Chonnam National University, Yeosu-si, South Korea
Abstract :
Maldistribution of refrigerant flow in parallel heat exchanger is one of the main reasons which reduces the thermal performance. This study demonstrates a numerical method to automatically evaluate the baffles height in order to optimize the flow distribution of two-phase flow refrigerant inside a heat exchanger header. This method couples the computational fluid dynamics (CFD) model and a genetic algorithm to generate the optimal dimensions of multi baffles simultaneously. The numerical results show that the maldistribution of flow could be reduced up to 9 times compare to original design. Furthermore, this framework also could expand the design space, thus it could be a useful tool to boost up the design of headers using in parallel heat exchanger.
