在汽轮机热力试验等有关计算中,要频繁地查用水和水蒸汽参数。已知两个独立的参数,求所确定状态的其余参数,按国际公式化委员会(IFC)公式,其计算过程非常复杂,甚至有的关系式表达为隐函数的形式(如已知压力求对应的饱和温度),无法用手工直接解算,因而长期以来不得不求助于图表解算法。查表虽然能保证一定的准确度,但对插值法总觉 In the calculation of steam turbine thermal test and other related calculations, water and steam parameters should be frequently checked. Two independent parameters are known and the remaining parameters of the determined state are calculated according to IFC formula. The calculation process is very complicated, and some relations are expressed in the form of implicit functions Saturation temperature), can not be solved directly by hand, which has long resorted to the graphic solution algorithm. Although the table can guarantee a certain degree of accuracy, but always feel interpolation