供热管道动态特性分析

An Analysis on the Dynamic Performance of Heat Supply Pipeline

针对风能、太阳能等间歇能源发电并入电网导致热电联产机组降低电负荷而影响供热效果问题,在考虑供热管道自身蓄热能力的基础上,通过建立供热管道动态数学模型,对供热管道进口水温突变、供热管道保温层厚度变化的情况进行计算分析,得到供热管道金属壁温、保温层壁温以及供热管道出口水温随时间的动态变化过程,并计算出供热管道出口水温重新达到稳定状态时的温度和时间。

In order to satisfy heat supply,the cogeneration units have to decrease loads when renewable energy joins power grid.According to the problem,this article establishes a dynamic mathematical model of heat supply pipeline for analyzing its performance when the inlet water temperature and the insulating layer thickness of heat supply pipeline change.Then a series of dynamic curves about metal pipe wall temperature,insulating layer wall temperature and the export water temperature of heat supply pipeline can be got.The export water temperature and time can also be calculated when the export water temperature of heat supply pipeline reaches a stable state.