储能科学与技术 ›› 2017, Vol. 6 ›› Issue (4): 753-757.doi: 10.12028/j.issn.2095-4239.2017.0057

• 相变储能专刊 • 上一篇    下一篇

低温液空储能流程模拟及优化

白  芳1, 3，张  沛1，尹少武1, 2，童莉葛1, 2，王  立1, 2   

  1. 1北京科技大学能源与环境工程学院，北京 100083；2北京科技大学北京市高效节能与环保工程研究中心，北京 100083；      3河北石油职业技术学院，河北 廊坊 065000
  • 收稿日期:2017-04-25 修回日期:2017-05-16 出版日期:2017-07-01 发布日期:2017-07-01
  • 通讯作者: 童莉葛，博士，副教授，从事能源转换与高效利用研究，E-mail：tonglige@me. ustb.edu.cn。
  • 作者简介:白芳（1985—），女，博士研究生，讲师，从事能源材料设计及应用研究，E-mail：bf851218@163.com
  • 基金资助:
    国家自然科学基金（51206010）项目，国家重点基础研究发展计划（2012CB720406）项目

Simulation and optimization of cryogenic liquid energy storage process

BAI Fang1,3, ZHANG Pei1, YIN Shaowu1,2, TONG Lige1,2, WANG Li1,2   

  1. 1School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; 2Beijing Higher Institution Engineering Research Center of Enery Conservation and Environmental Protection, Beijing 100083, China;3Heibei Petroleum Vocational and Technical College, Langfang 065000, Hebei, China
  • Received:2017-04-25 Revised:2017-05-16 Online:2017-07-01 Published:2017-07-01

PDF

365

摘要： 随着能源转型的加快推进，接入高比例可再生能源已成为电网发展的必然趋势。为了更好地利用太阳能、风能等新能源所产生的间歇性电力，研发不同的储能系统具有重要意义。本文使用Aspen Plus模拟了海兰德与朗肯混合循环，其循环效率达到64.5%。为了进一步提升流程性能，针对朗肯子循环和海兰德子循环进行了热分析和 分析。结果表明， 损失较大的模块是热交换器，朗肯子循环和海兰德子循环中热交换器的 损失分别占到了总损失的13.1%和61.8%，提升低温液空混合循环的关键在于提高热交换效率。

关键词: 储能, 液化空气, 海兰德循环, 朗肯循环, 循环效率

Abstract: This paper concerns with liquid air energy storage particularly the use of different cycles and optimization. A large scale standalone liquid air energy storage system could achieve a round trip efficiency of ~60%. By using a combined Heylandt cycle and Rankine cycle, we show, through simulation with Aspen Plus software, a cycle efficiency of 64.5%. For further improvement of the performance of the combined cycle, thermal efficiency and exergy efficiency of the Rankine cycle and the Heylandt cycle were analyzed separately. We foundthat the maximum exergy loss was associated with the heat exchangers, and the exergy losses of the Rankine cycle and the Heylandt cycle accounted for 13.1% and 61.8%, respectively. As a consequence, the enhancement of the performance of heat exchangers holds the key to improving the whole combined cycle efficiency.

Key words:  energy storage, liquid air, Heylandt cycle, Rankine cycle, cycle efficienc