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我们在做工业项目的可行性研究、工厂技术改造的初步设计或实施方案中,都要对项目进行经济分析。其中最常用的经济评价指标就是预期收益率(或叫内部收益率、贴现现金流通回收率)。这是对工程项目进行动态分析的一个综合性指标。预期收益率是使工程项目净现值等于零的贴现率。要求出它的值,在数学上就是要解一个高次代数方程。当一个工程项目的经济活动期为15年时,它的预期收益率的方程就是一个具有15项的15次实系数代数方程。由于预期收益率的计算量大,又不易计算准确,多次调整数据后的重复计算容易出错。为此,我们在微机系统上编制了”预期收益率”计算机程序。“广西机械设计院预期收益率计算机程序”在
We must carry out economic analysis of the project in the feasibility study of industrial projects and the preliminary design or implementation plan of factory technological transformation. The most commonly used economic evaluation index is the expected rate of return (or internal rate of return, discounted cash flow recovery rate). This is a comprehensive indicator of the dynamic analysis of engineering projects. The expected rate of return is the discount rate that makes the net present value of the project equal to zero. Demanding its value is mathematically a solution to a higher algebraic equation. When the economic activity period of a project is 15 years, the equation of its expected rate of return is an algebraic equation of 15 real coefficients with 15 terms. Since the calculation of the expected rate of return is large and it is not easy to calculate accurately, the repeated calculation after multiple adjustments of data is prone to errors. For this purpose, we have compiled the “expected yield” computer program on the microcomputer system. “Guangxi Machinery Design Institute Expected Rate of Return Computer Program”