潮汐能聚能增压方案的热力学性能分析.pdfVIP

第35 卷 第4 期 中 国 电 机 工 程 学 报 Vol.35 No.4 Feb.20, 2015 906 2015 年2 月20 日 Proceedings of the CSEE ©2015 Chin.Soc.for Elec.Eng. DOI ：10.13334/j.0258-8013.pcsee.2015.04.018 文章编号：0258-8013 (2015) 04-0906-07 中图分类号：TK 121 潮汐能聚能增压方案的热力学性能分析 凌长明，陈明丰，徐青，李军 (广东海洋大学工程学院，广东省 湛江市 524025) Thermodynamic Analysis on Plan of Seawater Pressurization Driven by Tidal Energy LING Changming, CHEN Mingfeng, XU Qing, LI Jun (School of Engineering, Guangdong Ocean University, Zhanjiang 524025, Guangdong Province, China) ABSTRACT: A new method to achieve reverse osmosis (RO) 水位差越大，聚能增压的效果越好；聚能增压过程的能量转 desalination using tidal energy was presented. The plan of 换效率和效率相等，提高效率可通过提升水位差或减小高 seawater pressurization driven by tidal energy was regarded as 压海水的压力来实现。 its core. The infinite storage volume model was adopted, and 关键词：潮汐能；聚能增压；能量转换效率；效率；无限 the feasibility of this plan was studied based on entropy 库容 analysis and exergy analysis, respectively. The relationship 0 引言 between pressure ratio and flow ratio in seawater pressurization process was obtained, and the relations of energy conversion 潮汐能是海洋能源中技术最成熟和利用规模 efficiency (and exergetic efficiency) on the pressure of 最大的一种能源。海洋能具有间歇性和随机性等特 production water were also studied. The results show that by 点，与海上风能和波浪能等海洋能源相比，潮汐能 utilizing directly tidal energy the low pressure seawater can be 具有高度可预测性的优势[1-2] 。目前，潮汐能主要用 changed into high pressure seawater which can be supplied for RO plant. Theoretically, a big enough pressure can be