在往复压缩机新产品设计中,必须进行热力计算。热力计算过程中,有很多系数需要设计者去选择。系数选择是否符合实际情况,直接影响到设计质量。各项系数的选择与生产条件、所采用的公差配合、结构方案、安装水平都有直接关系,而在一些文献中往往只介绍选择范围及影响因素。因此,设计者只好在其给定系数范围内进行估选。这对刚刚从事设计的人员来说,很难选定系数,势必造成较大设计误差。随着电子计算机辅助设计方法的普及,已经可以自编设计 In reciprocating compressor design of new products, thermal calculation must be carried out. In thermal calculation, there are many factors that designers need to choose from. Coefficient of choice is consistent with the actual situation, a direct impact on the quality of the design. The choice of coefficients is directly related to the production conditions, the tolerances used, the structural solutions and the installation level. However, in some literatures, only the selection scope and the influencing factors are often introduced. Therefore, the designer had to make a selection within the range of given coefficients. This is just for the design staff, it is difficult to select the coefficient, is bound to cause greater design errors. With the popularity of electronic computer-aided design methods, can already design