在变热量等效热降法理论的基础上 ,推导出热质能量以绝对量的形式进、出热力系统的数学描述———纯热量法。它是以机组的新蒸汽能级为基准 ,将机组其它各处的能量进行折算 ,得到纯热量品位系数 ξj。根据 ξj 的大小不仅可以判定热力系统各处的能级高低 ,当有热量进、出热力系统时 ,还可以判别热量进、出的最佳位置 ,以减少系统的不可逆损失 ,使热力系统处于最优运行状态 On the basis of the theory of equivalent heat drop of variable heat, the mathematical description of heat system is deduced that the heat and mass energy enter and exit in the form of absolute quantity, that is, the pure heat method. It is based on the unit’s new steam level as a benchmark, the rest of the unit energy conversion, the pure heat grade coefficient ξj. According to the size of ξj not only can determine the level of the energy system around the heat system, when the heat into and out of the heat system, you can determine the best heat into and out of the location to reduce the irreversible loss of the system, so that the thermodynamic system in the most Excellent running status