One of the semiexact methods which does not need small parameters is the DTM;, this method was first proposed by Zhou [3], who solved linear and nonlinear problems in electrical circuit problems.Chen and Ho [4] developed this method for partial differential equations and Ayaz [5] applied it to the system of differential equations; this method is very powerful [6]. This method constructs an analytical solution in the form of a polynomial. It is different from the traditional higher-order Taylor series method. The Taylor series method is computationally expensive for large orders. The DTM is an alternative procedure for obtaining analytic Taylor series solution of the differential equations. In recent years, the DTM has been successfully employed to solve many types of nonlinear problems [7–14]. Removing of a condensate liquid from a cooled, saturated vapor is important in engineering processes.