共沸混合物(R290/CO2)跨临界动力循环性能分析(英文) |
| |
引用本文: | 潘利生,魏小林,史维秀.共沸混合物(R290/CO2)跨临界动力循环性能分析(英文)[J].中国化学工程学报,2015,23(3):572-577. |
| |
作者姓名: | 潘利生 魏小林 史维秀 |
| |
作者单位: | 1.State Key Laboratory of High-Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China;2.School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China |
| |
基金项目: | Project 51306198 supported by the National Natural Science Foundation of China |
| |
摘 要: | Low critical temperature limits the application of CO2 trans-critical power cycle. The binary mixture of R290/CO2 has higher critical temperature. Using mixture fluid may solve the problem that subcritical CO2 is hardly con-densed by conventional cooling water. In this article, theoretical analysis is executed to study the performance of the zeotropic mixture for trans-critical power cycle using low-grade liquid heat source with temperature of 200 °C. The results indicated that the problem that CO2 can't be condensed in power cycle by conventional cooling water can be solved by mixing R290 to CO2. Variation trend of outlet temperature of thermal oil in super-critical heater with heating pressure is determined by the composition of the mixture fluid. Gliding temperature causes the maximum outlet temperature of cooling water with the increase of mass fraction of R290. There are the maximum values for cycle thermal efficiency and net power output with the increase of supercritical heating pressure.
|
关 键 词: | CO2 R290 Zeotropic mixture Low-grade heat energy Trans-critical power cycle |
收稿时间: | 2014-02-11 |
本文献已被 CNKI 万方数据 等数据库收录! |
| 点击此处可从《中国化学工程学报》浏览原始摘要信息 |
|
点击此处可从《中国化学工程学报》下载全文 |
|