单程换热器流体温度沿程分布函数

Functions of Fluid Temperature Distribution on Flow Pass in Single-pass Heat Exchanger

导出单程间壁式换热器在逆流或并流时两换热流体温度的沿程分布函数,推出在热容流率比(ms1cp1/ms2cp2)>、<、=1的情况下:(1)两流体温度沿程分布呈指数曲线形状和斜率变化趋势是唯一的;(2)两流体之间的进、出口温差Δt1和Δt2之相对大小,也是唯一的。

Temperature distribution functions of double heat exchanging fluid on flow pass at counter - or parallel - flow through single -pass recuperative heat exchanger are inferred. It points out that, at heat capacity rates （mslcpl/m32cp2）〉、〈、=1 ：（ 1 ）temperature distribution curves of double fluid appearing exponential curve and its slope change are sole;（2）Relative size between inlet and exit temperature difference （△t1 and △t2 ） of double fluid is sole.