【摘要】 CW型原表面回热器以结构紧凑和高效低阻的优势成为微型燃气轮机回热装置的最佳选择。然而，基于换热芯体对CW型原表面回热器进出口结构的研究鲜有公开成果。本文基于换热芯体构建了五个对比模型：考虑CW型通道结构壁面模型、不考虑CW型通道结构壁面模型、倾斜角α=60°模型、倾斜角α=45°模型和倾斜角α=30°模型。对进出口结构倾角α对CW型通道结构的热力学性能的影响进行对比分析，进而对倾角α进行寻优。结果显示，倾角对CW型通道结构的温升分布影响较小，对其进出口附近的压降影响显著。从热力学第一和第二定律角度对五种模型进行总体对比分析后可得最佳倾斜角α=45°。更多还原

【Abstract】 The Cross-wavy primary surface recuperator has become the best choice for micro gas turbine regenerative devices due to its compact structure, high efficiency, and low resistance. However, there are few publicly available research results on the inlet and outlet structures of Cross-wavy primary surface recuperator based on heat exchange cores. This article constructs five comparative models based on the heat exchange core: considering the wall model of CW channel structure, not considering the wall model of CW channel structure, and inclination angle α= 60°model, inclination angle α=45°model and inclination angle α=30°model. Inclination angle of inlet and outlet structures α Compare and analyze the thermodynamic performance of CW channel structures, and then investigate the inclination angle α Conduct optimization. The results show that the inclination angle has a small impact on the temperature rise distribution of the CW channel structure, but a significant impact on the pressure drop near its inlet and outlet. By comparing and analyzing the five models from the perspective of the first and second laws of thermodynamics, the optimal tilt angle can be obtained α=45°.更多还原