专题:海洋能开发

朗肯循环海洋温差能发电系统性能理论分析与试验

  • 陈凤云 ,
  • 刘蕾 ,
  • 彭景平 ,
  • 葛云征 ,
  • 刘伟民 ,
  • 王泉斌
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  • 自然资源部第一海洋研究所, 青岛 266061
陈凤云,助理研究员,研究方向为海洋温差能开发利用,电子信箱:cfyqdu2000@163.com

收稿日期: 2020-10-12

  修回日期: 2020-12-21

  网络出版日期: 2021-05-14

基金资助

国家自然科学基金面上项目(41976204);中韩海洋能源开发与利用技术交流合作项目(PI-2018-4);青岛市蓝色经济区建设专项资金扶持项目(Q1402);国家自然科学基金青年基金项目(51709055)

Theoretical analysis and experimental study of ocean thermal energy conversion plant of Rankine cycle

  • CHEN Fengyun ,
  • LIU Lei ,
  • PENG Jingping ,
  • GE Yunzheng ,
  • LIU Weimin ,
  • WANG Quanbin
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  • The First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China

Received date: 2020-10-12

  Revised date: 2020-12-21

  Online published: 2021-05-14

摘要

针对海洋温差发电系统中效率低的问题,对海洋温差发电朗肯循环进行了理论分析,建立了系统中关键设备数学模型,计算了发电系统循环热效率、净输出功率。通过计算得到:当透平进口气体温度和冷凝温度一定时,循环热效率随透平进口气体压力的增大先升高后降低,且存在最大值。研建了15 kW朗肯循环海洋温差能发电系统并试验验证,得到了在模拟海洋温差下循环热效率随各参数的变化趋势与规律,同时与理论计算结果比较,验证了理论计算结果的可靠性。

本文引用格式

陈凤云 , 刘蕾 , 彭景平 , 葛云征 , 刘伟民 , 王泉斌 . 朗肯循环海洋温差能发电系统性能理论分析与试验[J]. 科技导报, 2021 , 39(6) : 90 -95 . DOI: 10.3981/j.issn.1000-7857.2021.06.013

Abstract

In view of the the low efficiency of the ocean thermal energy conversion(OTEC), this paper makes a theoretical analysis of the Rankine cycle based on the first law and the second law of thermodynamics, and a mathematical model for the individual equipment of the cycle is built. Through the calculations of the cycle thermal efficiency and the net power output, the variations of the thermal efficiency and the net power output against the turbine inlet pressure, the superheat and the condensation temperature are obtained. A 15 kW ocean thermal energy conversion system with the Rankine cycle is constructed and tested, and the variations of the thermal efficiency against various parameters under the simulated working conditions of the ocean temperature difference are obtained through analyzing the experiment results. The consistency between the theoretical calculations and the experimental results is verified.

参考文献

[1] 陈凤云, 刘伟民, 彭景平. 海洋温差能发电技术的发展与展望[J]. 绿色科技, 2012(11):246-248.
[2] 刘伟民, 麻常雷, 陈凤云, 等. 海洋可再生能源开发利用与技术进展[J]. 海洋科学进展, 2018, 36(1):1-17.
[3] 李大树, 陈荣旗, 张理. 海洋温差能发电热力循环技术进展[J]. 工业加热, 2016, 45(4):6-13.
[4] 彭景平. 15 kW海洋温差发电系统的试验与研究[D]. 青岛:青岛理工大学, 2012.
[5] Faizal M, Ahmed M R. Experimental studies on a closed cycle demonstration OTEC Plant working on small temperature difference[J]. Renew Energy, 2013, 51:234-240.
[6] Yoon J I, Son C H, Baek S M, et al. Efficiency comparison of subcritical OTEC power cycle using various working fluids[J]. Heat Mass Transfer, 2014, 50:985-996.
[7] 吴春旭, 林礼群, 王幸, 等. 闭式海洋温差能发电系统的工质研究[J]. 太阳能学报, 2016, 37(4):1064-1070.
[8] 邓立生, 黄宏宇, 何兆红, 等. 有机朗肯循环的研究进展[J]. 新能源进展, 2014, 2(3):180-189.
[9] Chen H, Goswami D Y, Stefanakos E K. A review of thermodynamic cycles and working fluids for the conversion of low-grade heat[J]. Renewable and Sustainable Energy Reviews, 2010; 14:3059-3067.
[10] 刘伟民. 15 kW温差能发电装置研究及试验[J]. 中国科技成果, 2014, 15(10):17.
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