双气头多联产系统的相对节能率及其参照基准

多联产系统评价准则及其参照基准对系统集成开拓与设计优化至关重要，传统热力学性能指标难以全面科学地评估多能源输入、多功能系统性能特性。文中概述了目前采用相对节能率来评价联产系统性能时通常的做法和存在问题，从热力学基本方程和节能率定义出发推导出参照性能基准方程，提出一个半理论性参照分产系统折合性能的新参照基准，它将众多参照性能指标集中起来以一个折合指标描述，应用简便、又合理准确，为联产系统集成开拓与设计优化提供一个新的更好的参照基准。

Energy Saving Ratio and Its Reference Performance Benchmark of Polygeneration Systems With Two Kinds of Fuel Gas

The method of evaluating the polygeneration system and the selection of reference performance benchmark are very important to analyze and optimize polygenertion systems, and the conventional thermal performance index cannot estimate the systems with multi-inputs and multi-outputs effectively. This paper summarized the conventional methods of estimating the polygeneration systems by energy saving ratio, and disclosed the defects of those methods. Then a new equation was proposed for deciding the reference performances benchmark, which was deduced from foundational thermodynamics equations and the definition of energy saving ratio. The benchmark was calculated semi- theoretically by the new equation with typical performance data of the reference systems. This method is easy and exact, which provide a better way to calculate reference performances benchmark for the analysis and optimization of polygeneration systems.