外部参数扰动下CO_(2)冷电联合循环运行性能研究  

Experimental Test on Operation of CO_(2)-based Combined Cooling and Powel Cycle Under External Perturbations

作　　者：张永浩 舒歌群 石凌峰[1] 李力耕 田华 王轩[2] 孙孝存[1] ZHANG Yonghao;SHU Gequn;SHI Lingfeng;LI Ligeng;TIAN Hua;WANG Xuan;SUN Xiaocun(Department of Thermal Science and Energy Engineering,University of Science and Technology of China,Hefei 230027,China;State key laboratory of engines,Tianjin University,Tianjin 300072,China)

机构地区：[1]中国科学技术大学热科学和能源工程系,合肥230027 [2]天津大学内燃机燃烧学国家重点实验室,天津300072

出　　处：《工程热物理学报》2023年第6期1439-1445,共7页Journal of Engineering Thermophysics

基　　金：国家自然科学基金青年项目(No.51906237)。

摘　　要：二氧化碳是优良的发电循环工质和制冷剂,通过二氧化碳冷电联合循环可实现电能和冷能并供,目前已有一些循环理论探索与分析,未见实验研究。为此,本文搭建了一套基于二氧化碳工质的冷电联合循环试验样机系统并开展了初步实验测试。结果表明,在动力子循环运行稳定后启动制冷子循环,系统关键运行参数仅在小幅度范围内发生变化,联合循环能平稳快速地实现从动力循环模式向冷电联合循环模式的切换。此外,本文探究了外部冷热源参数变化下循环系统的运行及性能响应规律,可为进一步优化二氧化碳冷电联合循环的结构和系统设计提供参考。CO_(2)is a promising thermodynamic medium that can be employed in both power cycle and refrigeration cycle.In specific scenarios with diversified energy desires,CO_(2)-based combined cooling and power cycle become an attractive choice because it can simultaneously provide electricity and cooling products.Some theoretical explorations have been currently devoted to the application of the combined cycle,while few of them concerns the experimental operation of it.In this article,an experimental prototype of the CO_(2)-based combined cooling and power cycle is developed and preliminary tests on the system are conducted.The results indicate that the key operating parameters of the system just change within a small scope when start up the refrigeration subcycle,during the steady operation of the power subcycle.Hence,smooth and rapid transformation from powermode to combined-cooling-and power-mode can be successfully achieved.In addition,the systematic performance under various external heat sink as well as heat source conditions are also explored,which can give further guidance to the design and optimization of the CO_(2)-based combined cooling and power cycle.

关 键 词：二氧化碳 冷电联合循环 实验研究 

分 类 号：TK123[动力工程及工程热物理—工程热物理]