Research on synchronous optimization effect of working fluid components and node parameters of organic Rankine cycle (ORC). (February 2022)

• Record Type: Journal Article
• Authors: Gu, Conghui; Zhang, Yujian; Tang, Chunli; Vladislav Olegovich, Oshkin; Gloria, Kasolongo Ndongo
• Is Part Of: Case studies in thermal engineering. Volume 30(2022)
• Publication Date: 2022-02
• Subjects: Organic rankine cycle -- Genetic algorithm -- Optimization effect -- Nested method; Heat engineering -- Case studies -- Periodicals; 621.40205
• DOI: 10.1016/j.csite.2021.101742
• Languages: English
• ISSNs: 2214-157X

Abstract

Abstract: In this paper, a new numerical optimization algorithm which can simultaneously optimize the components and operating parameters of organic Rankine cycle is proposed and applied to single-stage organic Rankine cycle and two-stage organic Rankine cycle. Compare with the Nested method, the optimization effect of the numerical method proposed can reach more than 99.99% of the optimal effect if the working medium had not been considered in the two-stage organic Rankine cycle. The optimization time is only about 0.02% of the Nested method. 99.52% of the best performance after the working medium being considered. The results indicate that when the complexity of the system and the number of independent variables increase, the optimization effect of the system decreases slowly. Compared with the previous publication, the overall performance is finally improved 1.68% by the new numerical optimization algorithm.