准确、快速、稳定地计算制冷剂热力性质是计算机辅助设计和工程计算的 要求。本文将隐式拟合方法与MartinHou方程相结合，提出制冷剂过热气体热力 性质的隐式拟合方法，该方法不仅具有形式统一、精度高、速度快、外推性和 稳定性好的优点，而且保证了过热区与两相区之间热力性质的连续性
Fast calculation of the refrigerant thermodynamic properties is fundamental and important for engineering calculations, especially for the refrigeration system simulation. In this work, the implicit curvefitting method combined with the MartinHou EOS is developed for the curvefit of superheat properties of refrigerant gas. The continuity between superheat gas region and saturation vapor line is guaranteed in present method. Case studies using refrigerants R12, R22, R134a and R600a, in common encountered temperature range show high agreement to the reference data and good flexibility in the refrigeration system simulation.
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