S-CO_(2)与组分调控双压蒸发ORC系统联合研究  

Investigation of system combined S-CO_(2) and ORC coupling composition adjustment and dual-pressure evaporation

作　　者：黄仁龙 钟天明 王亚阁 姜炳春[1] HUANG Ren-long;ZHONG Tian-ming;WANG Ya-ge;JIANG Bing-Chun(School of Electromechanical Engineering,Guangdong University of Science and Technology,Dongguan 523668,Guangdong Province,China;School of Electromechanical Engineering,Zhongkai University of Agriculture and Engineering,Guangzhou 510225,Guangdong Province,China)

机构地区：[1]广东科技学院机电工程学院,广东东莞523668 [2]仲恺农业工程学院机电工程学院,广东广州510225

出　　处：《化学工程》2023年第6期79-83,共5页Chemical Engineering(China)

基　　金：广东省自然科学基金(2021A1515011760);校级创强科研团队(GKY-2022CQTD-1);校级科研基金(GKY-2022KYYBK-4)。

摘　　要：超临界二氧化碳(S-CO_(2))是一种先进发电动力循环,为进一步回收利用其膨胀机释放的余热,文中将组分调控双压蒸发非共沸有机朗肯循环(ORC)作为底循环,与S-CO_(2)发电循环共同构建新型联合系统,利用模拟仿真的方法,探讨新型联合系统性能优势。结果表明:ORC双压蒸发技术可以深度利用膨胀机释放的余热,使得传统双压蒸发联合系统的净输出功比回热S-CO_(2)循环高9.61%—10.23%,而组分调控双压蒸发联合系统的净输出功比回热S-CO_(2)循环高9.95%—10.35%,组分调控双压蒸发联合系统的净输出功略高于传统双压蒸发联合系统,研究结果表明新型联合系统在能源利用方面比简单的回热S-CO_(2)发电循环更具有优势。Supercritical carbon dioxide power cycle(S-CO_(2))is an advanced power cycle.To further recover the waste heat released by its expander,the zeotropic organic Rankine cycle(ORC)coupling composition adjustment and dual-pressure evaporation was taken as the bottom cycle.A novelty system combined S-CO_(2) and ORC was proposed and its performance was analyzed by means of simulation.The results show that the ORC coupling composition adjustment and dual-pressure evaporation can deeply utilize the waste heat released from the expander.The net power output of the conventional dual-pressure evaporation combined system is 9.61%-10.23%higher than that of the regenerative S-CO_(2) cycle,while the net power output of the combined system composition adjustment and dual-pressure evaporation is 9.95%-10.35%higher than that of the regenerative S-CO_(2) cycle.The net power output of the combined system composition adjustment and dual-pressure evaporation is slightly higher than that of conventional dual-pressure evaporation combined system.The novelty combined system proposed has more advantages in energy utilization than the simple regenerative S-CO_(2) power generation cycle.

关 键 词：超临界二氧化碳 有机朗肯循环 组分调控 联合循环发电系统 双压蒸发 

分 类 号：TK123[动力工程及工程热物理—工程热物理]