【摘要】 马丁-侯(M-H)方程在计算液相体积、高压气体的焓熵、以及极性液体的焓熵方面有很好的精度优势,但对其中B4参数的求取需要迭代计算而影响了M-H方程在工程计算中的应用。今首先将M-H方程的m参数和物质的偏心因子ω关联起来,在保持M-H方程计算气相体积精度的条件下得到计算m的普适方法。然后提出参数B4与物质的对比温度Tr以及临界体积Vc之间的关联计算公式,实现对B4的直接求取,简化了M-H方程对液体体积的求解过程。更多还原

【Abstract】 The M-H equation has a tremendous superiority of high precision in the field of calculating liquid volume,enthalpy-entropy of high pressure gas and enthalpy-entropy of polar liquid.However,the calculation of the parameter B4 in M-H equation requires iterative computation which interferes with the application of the equation in engineering computation.This paper relates the parameter m of the M-H equation to the eccentric factor ω and achieves a method of direct evaluating B4 with a formula correlating the parameter B4 with the reduced temperature Tr and critical volume Vc,which simplifies the computation process of using M-H equation to calculate the liquid volume.更多还原