The sinusoidal channel can reduce the pressure drop by 8.3% and increase heat transfer coefficient by 2.9% compared to the zigzag with sharp corner channel at a constant mass flow rate of 2.0 × 10 –4 kg/s. The smoothness of bend corner is conducive to heat transfer and leads to the reduction of hydraulic resistance. The flow separation and recirculation around the corner inhibit the heat transfer and increase the pressure drop. The PCHE channel shapes included straight, zigzag with different sharp and round corners ( R = 1.0, 1.5, 2.0, and 3.0 mm), and sinusoidal shapes. Shear stress transport k− ω turbulent model was used to determine the numerical solutions in the PCHEs. In this study, the local and global thermal-hydraulic performances of different PCHEs using supercritical LNG and liquid nitrogen were investigated by a numerical method. PCHE is seen as the most promising technology in LNG-floating production storage and offloading due to its high efficiency and compactness. Printed circuit heat exchanger (PCHE) has semi-circular micro-channels with high thermal performance and is widely used in the oil and gas industry, refrigeration, and other fields.