净现值法和内部收益率法的比较

经济评价主要是作为对不同技术方案比较和选择的依据。无论是一项新建工程还是一个技术改造方案,都要经过对各种技术经济条件以及各种影响因素进行全面比较和评价才能做出合理的决策。由此可见,作好经济评价工作是保证决策合理的基础,而该项工作的质量又直接取决于评价和计算方法的正确性和适用性。因此正确地选择经济评价的方法是十分重要的。国内外采用的经济评价方法很多,每种方法都有其优点和不足,也有一定的适用范围。本文介绍了两种最重要的方法——净现值法和内部收益率法。为便于更深刻地理解和恰当地运用,对各自的特点和使用条件进行了详细的讨论和比较。

COMPARISON OF NET PRESENT VALUE METHOD WITH INTERNAL RATE OF RETURN METHOD

Economic appraisal is mainly used as the basis of comparison and selection of different technical operations. For any newly built project or technical improvement scheme, people can hardly make any proper decision until all kinds of technical-economical conditions and influence factors are comprehensively compared and evaluated. Thus it can be seen that economic appraisal is the basis of making proper decision. However, the quality of the economic appraisal is directly dependent on correctness and adaptability of the method of evaluation and computation. So it is very important for properly selecting an economic appraisal method. There are many economic appraisal methods used in and outside China, each of which has its own virtues and defects, and also definite application range. In the paper, the most basic and important methods-net present value method and internal rate of return method are introduced. In order to profoundly understand and perfectly use these two methods, their respective features and usable conditions are discussed in detail.