带有回热的烟气余热ORC系统优化研究论文设计VIP专享VIP免费

带 有 回 热 的 烟 气 余 热 ORC 系 统 优 化 研 究摘要：对可用于回收工业低温余热的有机朗肯循环(OCR) 系统进行简述, 并采用热力学第一定律、热力学第二定律分别对基本系统、回热系统、抽气回热系统进行热力计算；通过对R245fa 、R134a 、R601等多种有机工质进行比对，得出以R245fa 、R601a 作为循环混合工质有更高的系统效率；为提高有机朗肯循环（ORC）系统热效率，在回热有机朗肯循环系统基础上进行优化，提出 “智能旁路烟气回热系统”方案，分别与基本系统、回热系统、抽气回热系统进行比较，最后总结得出：在一定条件下，该优化系统的热经济性更好。关键词：低温余热；有机朗肯循环（ORC）；内回热；循环优化Optimization of flue gas waste heat ORC system with heat recovery AbstractThis article briefly introduced the Organic Rankine Cycle (OCR) system that can be used to recover industrial low-temperature-rank waste heat, and calculated the thermodynamic properties of the basic system, the regeneration system and the regenerative extraction steam. using Thermodynamics First Law and Second Law. The low-temperature flue gas waste heat is used as a heat source. It is concluded that R245fa and R601a have higher system efficiency as mixed working fluid by comparing R245fa, R134a, R601 and other organic working fluids. To improve the Organic Rankine Cycle (OCR) system 's efficiency. A "smart bypass flue gas regeneration system" is proposed based on the optimization of the regeneration system and compared with the basic system, the regeneration system and the regenerative extraction steam. Finally, it is concluded that the thermal economy of the optimized system is better under certain conditions.Keywords：Low-temperature waste heat; organic Rankine cycle (ORC); internal heat recovery; cycle optimization1目 录摘要ⅠAbstractⅡ第一章 绪论51.1 研究背景和意义51.2 国内外研究状况51.2.1 国外研究现状51.2.2 国内研究现状61.2.3 存在问题6...