系统最低温度为380 K对SRC预冷器的影响，最佳摩尔质量为40 g/mol，最高操作温度和压力分别为1273 K和1.36 MPa。结果表明，随着PR的增加，预冷器的质量单调增加。这一趋势可归因于随着压比增加，预冷器的对数换热温差不断减小，使得换热面积增加，因此质量单调增加。

The effect of the minimum system temperature of 380 K on the SRC precooler is studied, with an optimal molar mass of 40 g/mol and a maximum operating temperature and pressure of 1273 K and 1.36 MPa, respectively. The results indicate that as PR increases, the mass of the precooler monotonically increases. This trend can be attributed to the fact that as the pressure ratio increases, the logarithmic heat transfer temperature difference of the precooler continuously decreases, resulting in an increase in heat transfer area and a monotonic increase in mass.