[1]马新灵,连麒飞,雷萌,等.混合工质的选择对ORC系统性能的影响[J].郑州大学学报(工学版),2021,42(06):62-68.
点击复制

混合工质的选择对ORC系统性能的影响()
分享到:

《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
42
期数:
2021年06期
页码:
62-68
栏目:
出版日期:
2021-11-10

文章信息/Info

Title:
Research on the Method of Using Zeotropic Mixture to Optimize Pure Working Fluid in ORC System
作者:
马新灵连麒飞雷萌孟祥睿魏新利李志彬
文献标志码:
A
摘要:
为了探究非共沸混合工质应用于有机朗肯循环(ORC)系统的性能,找出利用混合工质优化目标纯工质的方法,用Aspen Plus软件建立了ORC系统的流程模型,在蒸发温度60~100 ℃下,研究了混合工质和纯工质的热力性能和经济性能。研究结果表明,蒸发温度的增加可以提高ORC系统的热力性能,降低平均化发电成本(LEC)。在研究条件下,最佳循环工质为混合工质3R600a/7R601a,蒸发温度100 ℃时,其净输出功率、热效率和LEC分别为56.59 kW、11.76%和0.1312 $/kW•h,与纯工质R600a相比,净输出功率提高了31.73%,热效率提高了1.17%,平均化发电成本降低了11.06%。通过灰色关联法找到了优化纯工质的方法,即将目标纯工质与其输出功率相似的另一种新工质混合,得到的具有较大温度滑移的混合工质,可改善目标纯工质的性能。
Abstract:
In order to explore the performance of zeotropic mixtures for the organic Rankine cycle (ORC) system and find out the method of optimizing the target pure working fluid with mixtures, the ORC system model was established by Aspen Plus. The thermal performance and economic performance of mixtures and pure working fluid were studied. The results show that the increase of evaporation temperature can improve the thermal performance of ORC system and reduce the levelised electricity cost (LEC). Under the research conditions, the optimal working fluid is 3R600a/7R601a, and when evaporation temperature is 100 ℃, the net output power, thermal efficiency and LEC are 56.59 kW, 11.76% and 0.1312 $/ kW·h, respectively. Compared with R600a, the net output power and thermal efficiency are increased by 31.73% and 1.17%, and the LEC is reduced by 11.06%. The method of optimizing the pure working fluid is found by grey correlation method. And it is to select another pure working fluid whose net output power is similar to the target pure working fluid. Then their mixture that has large temperature glide can improve the performance of the target pure working fluid.
更新日期/Last Update: 2021-12-17