CAJ | 학술논문

在满足多股流换热工艺要求的前提下,分析了一股冷流与多股热流(或者一股热流与多股冷流换热)形成的(1+n)多股流换热过程的最佳组织原则.通过泛函数法,在给定火积耗散条件下求解所需最小换热面积.结果表明:换热工艺条件下,换热过程中保持换热系数的开平方与换热温差的乘积均匀时,(1+n)多股流换热过程最优,所需换热面积最小,而温差场均匀性原则并不是换热器设计的最佳原则.
재만족다고류환열공예요구적전제하,분석료일고랭류여다고열류(혹자일고열류여다고랭류환열)형성적(1+n)다고류환열과정적최가조직원칙.통과범함수법,재급정화적모산조건하구해소수최소환열면적.결과표명:환열공예조건하,환열과정중보지환열계수적개평방여환열온차적승적균균시,(1+n)다고류환열과정최우,소수환열면적최소,이온차장균균성원칙병불시환열기설계적최가원칙.
On the premise of meeting the requirements of the multi-stream heat transfer process, the optimal orga-nization principle of the heat transfer processamong (1+n) multistreams, which comes from one cold stream and multi hot streams or from one hot stream and multi cold streams, is discussed in this paper.Then, a functional analysisis conducted to solve the required minimum heat exchange area under a given entranspy dissipation.The results show that, when the process requirements are met and the product of the heat transfer temperature difference and the square root of heat transfer coefficient is kept uniform, the heat transfer process among ( 1 +n ) multi streams shows the best performance with aminimum heat exchange area, and that the principle of keeping the tem-perature difference (Δt) uniform is not the best.