关键词: 传热有效度, 对数平均温差修正系数, 分流式换热器, 温度效率, 表面粗糙度, 缓进给磨削, 立铣刀, 硬质合金, 螺旋槽

Abstract: Based upon analytical solutions of governing equations for heat transfer in <1-3>, <2-4>,and<2-6)split flow heat exchangers, the expressions for the temperature efficiency P and LMTD correction factor Fare presented. F and P values for<1-n>(n=2,3,4)and<2-n>(n=4,6,8)split flow heat exchangers are compared over the meaningful range of values of thermal flow rate ratio R and number of heat transfer units (NTU), The results are discussed.

Key words: 传热有效度, 对数平均温差修正系数, 分流式换热器, 温度效率, Cemented carbide, Creep feed grinding, End mill, Surfaces roughness, Helical flute