基于能级概念的火用经济学计价策略  

Exergoeconomic Cost Valuation Strategy Based on an Energy-level Concept

作　　者：孙家宁[1] 陈清林[1] 尹清华[1] 华贲[1] 

机构地区：[1]华南理工大学传热强化与过程节能教育部重点实验室,广东广州510640

出　　处：《热能动力工程》2003年第6期552-555,596,共5页Journal of Engineering for Thermal Energy and Power

基　　金：国家重点基础研究发展规划基金资助项目 (G2 0 0 0 0 2 63 0 7) ;广东省自然科学基金资助项目 (0 0 0 474)

摘　　要：正确合理地对火用流计价 ,确定从燃料到产品火用流的转换过程中费用形成及变化过程 ,是实现能量系统的火用经济学分析和优化的关键之一。将能级的概念引入热经济学计价体系 ,把供入能流按能级拆分 ,依据能级相近最大化相供的原则 ,解决能量取出与供入间的对应问题 ,提出了基于能级相近最大化相供的火用流计价策略 ,以减少求解过程中所涉及的未知变量数 ,说明产品火用流存在时的附加方程引入情况。最后以典型的热电联产系统 (CGAM系统 )的火用经济分析优化中火用流计价为例 ,介绍了该计价方法的应用。A correct and rational cost valuation of exergy flows and the determination of the process of cost formation and variation during a fuel-to-product exergy flow transformation constitute one of the key issues for the realization of exergoeconomic analysis and optimization of an energy system. A concept of energy level is introduced into the system of thermoeconomic cost valuation with the supplied energy flows being split according to their energy levels. On the basis of the principle of close energy levels and maximum energy supply, the problem of matching the energy extraction and supply has been solved. Moreover, the authors have come up with a cost valuation strategy of exergy flows based on the above-mentioned principle. This strategy is aimed at decreasing the number of unknown variables involved in the calculation process. An explanation is also given of the introduction of an additional equation in the presence of a multi-product exergy flow. Finally, with a typical heat and electricity cogeneration system serving as an example described is the application of the method of exergy-flow cost valuation in the optimization of exergoeconomic analysis.

关 键 词：YONG经济学 能量系统 能级 热电联产 计价策略 

分 类 号：TK11[动力工程及工程热物理—热能工程]