化工学报 ›› 2016, Vol. 67 ›› Issue (4): 1453-1458.DOI: 10.11949/j.issn.0438-1157.20151212

• 能源和环境工程 • 上一篇    下一篇

MnCl2-CaCl2-NH3再吸附温度提升系统储能特性

朱芳啟, 江龙, 王丽伟, 王如竹   

  1. 上海交通大学机械与动力工程学院, 上海 200240
  • 收稿日期:2015-07-29 修回日期:2015-11-20 出版日期:2016-04-05 发布日期:2016-04-05
  • 通讯作者: 王丽伟
  • 基金资助:

    国家优秀青年科学基金项目(51222601)。

Energy storage properties of MnCl2-CaCl2-NH3 resorption temperature-lifting system

ZHU Fangqi, JIANG Long, WANG Liwei, WANG Ruzhu   

  1. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
  • Received:2015-07-29 Revised:2015-11-20 Online:2016-04-05 Published:2016-04-05
  • Supported by:

    supported by the National Science Foundation of China for Excellent Young Scholars (51222601).

摘要:

吸附储热因其储热密度高、储热周期长、工作模式灵活而备受关注。基于热化学变温再吸附原理,构建了低品位热能温度提升实验系统,并采用吸附工质对MnCl2-CaCl2-NH3对其升温储能特性进行了理论分析和实验研究。结果表明在储热、释热温度分别为135℃和140℃的条件下,最大储热密度和最大潜热显热比分别为614 kJ·kg-1、0.418。在储热、释热温度分别为125℃和130℃的条件下,最大储热效率为28.57%。实验验证了热化学温度提升系统的可行性。

关键词: 吸附剂, 吸附, 热力学, 能量密度, 温度提升

Abstract:

The sorption thermal energy storage has drawn burgeoning attention due to the high energy storage density, long-term heat storage capability and flexible operating modes. A novel thermochemical temperature-lifting system is established for the integrated energy storage and energy upgrade of low-grade thermal energy based on thermochemical temperature-lifting resorption technology. The resorption working pair MnCl2-CaCl2-NH3 is selected to investigate the performance of the energy storage cycle theoretically and experimentally. Results indicate that the highest thermal storage density and latent/sensible heat ratio are 614 kJ·kg-1 and 0.418 when the heat charging and discharging temperature are 135℃ and 140℃,respectively. The highest heat storage efficiency is 28.57% when the heat charging and discharging temperature are 125℃ and 130℃. The experiments verify the feasibility of the system for utilizing the low-grade thermal energy.

Key words: adsorbents, adsorption, thermodynamics, energy density, energy upgrade

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