发电厂主蒸汽管道输送过程传递分析  

The exergy transfer analysis on the power plant pipeline of main steam transportation process

作　　者：张明智[1] 刘辉[1] 吴红杰[1] 李婷婷[1] 

机构地区：[1]华北电力大学能源动力与机械工程学院,河北保定071003

出　　处：《华北电力大学学报（自然科学版）》2013年第5期98-102,共5页Journal of North China Electric Power University：Natural Science Edition

摘　　要：为了得出工质及能质在管道中传递的实际过程及传递过程中管道阻力特性的变化。在考虑管道内存在的摩擦、散热、弯头、节流等影响因素情况下,基于工程热力学及气体动力学理论,并引入速度系数,导出管道中以压力场和温度场为主导势场时的传递系数与速度系数之间的函数关系式,并以某电厂内主蒸汽管道平直段为例进行了计算,并与传统的传递系数计算方法进行比较,得到了一些新的结论,为工程中合理的确定管道管径、泵机组数以及管线的位置的最优组合方案提供了理论参考依据。In order to get the characteristics of the resistance in the pipeline. Considering the effect of the friction loss, heat dissipation, bend and the throttling gear, we derive the exergy transfer coefficient of the straight pipe to pressure field and temperature field based on the engineering thermodynamics and gas dynamics theory. A certain power plant steam pipeline as an example and it is compared with the traditional exergy transfer coefficient calculation method. We obtain some new conclusions that provide the theory reference for determing the reasonable pipe diameter, pump unit number and the position of the pipeline optimal combination scheme.

关 键 词：管道输送过程 速度系数 (火用)传递 焖传递系数 管道输送性能 

分 类 号：TK124[动力工程及工程热物理—工程热物理]