Parametric Optimization of Brayton /Organic Trans-critical Combined Cycle for Flue Gas Waste Heat Recovery
Parametric Optimization of Brayton /Organic Trans-critical Combined Cycle for Flue Gas Waste Heat Recovery
复制标题
烟气余热回收布雷顿/有机跨临界联合循环参数优化
DOI：
10.1016/j.egypro.2015.07.370
复制
发表时间：
2015-08
期刊：
影响因子：
--
通讯作者：
Huaixin Wang
中科院分区：
文献类型：
--
作者：
Chengyu Li;Qiang Zhu;Huaixin Wang
提出了一种由空气基开式布雷顿循环（BC）和有机跨临界循环（OTC）组成的联合循环，用于从初始温度约为600°C的烟气中回收电力。采用BC作为顶循环，跨越热源与OTC底循环之间的温差，使热源的排热过程与循环的加热过程温度匹配良好。由于空气具有出色的热稳定性，因此选择空气作为BC的工作流体。在给定的烟气质量流量下，对联合循环进行了参数优化，使系统的净输出功率最大化。结果表明：OTC工质的选择和BC的压比值对系统性能起主导作用，而BC膨胀过程中空气的初始温度、OTC膨胀过程中有机流体的初始压力和温度、OTC的冷凝温度等参数的取值也对系统性能产生影响。筛选出苯、甲苯、庚烷、丙酮和R113作为OTC工质的候选，苯的最大净输出功率为175.87 kJ/（kg-烟气）。
A combined cycle composed of an air based open Brayton cycle (BC) and an organic trans-critical cycle (OTC) is presented for power recovery from flue gas of initial temperature around 600 °C. BC is employed as the top cycle to span the temperature gap between the heat source and the OTC bottom cycle, and offers a desirable temperature matching between the heat source's heat rejection process and the heat addition process of the cycle. Air is selected as working fluid for BC owing to its outstanding thermal stability. Parametric optimization on the combined cycle is carried out to maximize the net power output of the system at a given mass flow rate of the flue gas. The results show that the choice of OTC working fluid and pressure ratio value of the BC dominate the system performances, while the values of other parameters like the initial temperature of air in BC expansion process, the initial pressure and temperature of the organic fluid in OTC expansion process, and the condensing temperature of OTC also affect the system performances. Benzene, toluene, heptanes, acetone and R113 are screened as candidates for OTC working fluid, and maximum net power output of 175.87 kJ/(kg-flue gas) is achieved with benzene.
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DOI：
--
发表时间：
2009-04
期刊：
--
影响因子：
--
作者：
S. Quoilin;V. Lemort
通讯作者：
S. Quoilin;V. Lemort
影响因子：
9
作者：
F. J. Fernandez;M. M. Prieto-M.;I. Suarez
通讯作者：
F. J. Fernandez;M. M. Prieto-M.;I. Suarez
影响因子：
10.4
作者：
Dai, Yiping;Wang, Jiangfeng;Gao, Lin
通讯作者：
Gao, Lin
影响因子：
6.4
作者：
Drescher, Ulli;Brueggemann, Dieter
通讯作者：
Brueggemann, Dieter