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流体热物性是流体热物理性质的简称,包括流体的热力学性质和迁移(输运)性质,其中热力学性质主要包括PVT性质、饱和蒸气压、临界参数、饱和气液相密度、比热容、表面张力、声速和混合物的相平衡性质等,而迁移性质则主要包括粘度、导热系数和扩散系数等。实践证明,可靠的热物性数据不仅是许多工程设计和科学研究,特别是动力工程和化学工程中的工业流程设计不可缺少的,而且往往与基础研究的创新紧密联系在一起。
The thermophysical properties of fluids are short for thermophysical properties of fluids, including their thermodynamic properties and migration (transport) properties. The thermodynamic properties include the properties of PVT, saturated vapor pressure, critical parameters, saturated gas-liquid phase density, specific heat capacity, surface tension, The speed of sound and the phase equilibrium properties of the mixture, etc., while the migration properties mainly include viscosity, thermal conductivity and diffusion coefficient. Practice has proved that reliable thermophysical data is not only indispensable for many engineering design and scientific research, especially industrial process design in power engineering and chemical engineering, but also often closely linked with the innovation of basic research.