Optimization of the self-condensing CO2 transcritical power cycle using solar thermal energy
文献类型：会议论文
| 作者 | Pan LS(潘利生) ; Li,Bing; Shi,Weixiu; Wei XL(魏小林)
|
| 出版日期 | 2019 |
| 会议日期 | AUG 22-25, 2018 |
| 会议地点 | Hong Kong, HONG KONG |
| 关键词 | CO2 transcritical power cycle Supercritical CO2 Brayton cycle Solar thermal energy CO2 condensation |
| 页码 | 113608 |
| 英文摘要 | Compared with the conventional Rankine cycle, the CO2 transcritical power cycle gives a higher thermal efficiency because of its high average heat absorbing temperature and is suitable for driving a compact system. The self-condensing CO2 transcritical power cycle can solve the problem that CO2 is difficult to condense in a conventional CO2 transcritical power cycle using conventional water cooling. Based on solar thermal energy, a theoretical analysis model was established to study the relationship between the cycle performance and the operating parameters. The results showed that the thermal efficiency increases with increasing the cooled pressure with a low final cooled temperature. By increasing the final cooled temperature, a peak appears on the thermal efficiency curve. The outlet temperature of the cooling water is affected by a shift of the pinch point position in the cooler. According to the variation of the outlet temperature of the cooling water and the proportion of the mass flow rate of CO2 in the power sub-cycle and that in the whole cycle, it can be concluded that conditions with a very low cooled pressure are uncontrollable. In these conditions, the maximum thermal efficiency of the self-condensing CO2 transcritical cycle is 0.3463, which is 0.0313 a little lower than that of the supercritical CO2 Brayton cycle. However, the novel cycle simplifies the development of the pressurizing component and avoids the liquid hammer in the pressurizing process. |
| 资助机构 | National Natural Science Foundation of China [51776215]; [3192042]; [3172008] |
| 会议录 | APPLIED ENERGY
 |
| 语种 | 英语 |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000497971400107 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/90523]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Beijing Univ Civil Engn & Architecture, Sch Environm & Energy Engn, Beijing 100044, Peoples R China 3.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Pan LS,Li,Bing,Shi,Weixiu,et al. Optimization of the self-condensing CO2 transcritical power cycle using solar thermal energy[C]. 见:. Hong Kong, HONG KONG. AUG 22-25, 2018. |
入库方式： OAI收割
来源：力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。