Numerical simulation and structural optimization on microchannel heat exchangers

To improve the heat exchange efficiency of microchannel transfer equations are solved using COMSOL and the heat exchange heat exchanger, characteristics of the flow and heat microchannel heat exchanger is numerically simulated. The parameters such as the temperature, differential pressure between inlet and outlet and total thermal resistance of the microchannel exchanger are analyzed, and its heat exchange performance is evaluated. The heat exchange performance can'be effectively improved by optimizing the geometry structure of microchannel heat exchanger. The numerical simulation results indicate that the thermal resistance can be minimized and the heat exchange can reach the best performance when the height to width ratio of microchannel is 0.8, the width ratio of microchannel to interval is 0.6, and the channel number is 71.