Experimental investigation on an innovative resorption system for energy storage and upgrade
Experimental investigation on an innovative resorption system for energy storage and upgrade
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用于能量存储和升级的创新吸收系统的实验研究
DOI：
10.1016/j.enconman.2017.02.014
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发表时间：
2017
影响因子：
10.4
通讯作者：
Roskilly Anthony Paul
中科院分区：
文献类型：
--
作者：
Jiang Long;Wang Liwei;Wang Ruzhu;Zhu Fangqi;Lu Yiji;Roskilly Anthony Paul
高效蓄热技术的发展已成为能源转换系统发展的关键技术。吸附式蓄热技术以其能量密度高、热损失小、工作方式灵活等优点受到了广泛的关注。本文在STES的基础上，提出了一种新型的再吸收吸附储能（RTES），并建立了实验系统，进行了储能和储能升级的研究。4.8在吸附反应器中分别填充3.9kg和3.9kg的MnCl 2和CaCl 2复合吸附剂，并集成经硫酸处理的膨胀天然石墨（ENG-TSA）作为强化传热的基体。结果表明，当输入热温度为125 °C，放热温度为130 °C和135 °C时，储能密度最高，分别为662 kJ/kg和596 kJ/kg。对于不同的输入和释放温度，能量效率和火用效率分别为27.5%~ 40.6%和32.5%~ 47%。新型RTES系统验证了储能和升级的可行性，显示了低品位热利用特别是工业过程的巨大潜力。
Progress of efficient thermal energy storage (TES) has become a key technology for the development of energy conversion system. Among TES technologies, sorption thermal energy storage (STES) has drawn burgeoning attentions due to its advantages of high energy density, little heat loss and flexible working modes. Based on STES, this paper presents an innovative resorption sorption energy storage (RTES), and the experimental system is established and investigated for energy storage and upgrade. 4.8 kg and 3.9 kg MnCl2and CaCl2composite sorbents are separately filled in the sorption reactor, and expanded natural graphite treated with sulfuric acid (ENG-TSA) is integrated as the matrix for heat transfer intensification. It is indicated that the highest energy storage density are 662 kJ/kg and 596 kJ/kg when heat input temperature is 125 °C and heat release temperature are 130 °C and 135 °C, respectively. For different heat input and release temperature, the energy efficiency and exergy efficiency range from 27.5% to 40.6% and from 32.5% to 47%, respectively. The novel RTES system verifies the feasibility for energy storage and upgrade, which shows the great potential for low grade heat utilization especially for industrial process.