燃气轮机总能系统及其能的梯级利用原理

Integrated energy system of gas turbine and cascade utilization of thermal energy

吴仲华先生从科学原理出发,阐述热力系统中能的梯级利用与品位概念,倡导总能系统,提出了著名的:温度对口、梯级利用"原理。这里,介绍他的部分论述和我们对它的理解,侧重概述作者等在其基础上的相关拓展,包括联合循环的梯级利用原理、热(或和冷)功联产的梯级利用原理、以及中低温热能的梯级利用原理等。还通过许多典型实例研究,剖析系统集成的能量梯级利用机制和特性规律。能量梯级利用原理是热力系统及其转换利用过程的核心科学问题,不仅为热力循环系统集成开拓提供理论依据,而且为相关的系统设计优化等指明有效途径与方法。

Professor Wu Zhonghua had described the idea of cascade utilization of energy and the concept of energy level, proposed the famous princlple＂temperature matched and cascade utilization＂and called integrated energy system. This paper introduced some of his veiwpoint and our comprehension on those, and emphasized the authors＇ development based on the theory. The developments include the principle of cascade utilization in combined cycle, that in combining thermal energy（ heat or cool）and power and that in the utilization of mid and low temperature thermal energy. This paper also disclosed the characteristics of systemic synthesis through the studies on many typical examples. The principle of cascade utilization of thermal energy is the key scientific issue on thermal energy systems and energy conversion processes, which will not only be useful for the systemic integration of thermal cycle, but also for systemic design and optimization.