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Novel 'open-sorption pipe' reactor for solar thermal energy storage

机译：用于太阳能热能储存的新型“开放式吸附管”反应器

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摘要

In the last decade sorption heat storage systems are gaining attention due to their high energy storage density and long term heat storage potential. Sorption reactor development is vital for future progress of these systems however little has done on this topic. In this study, a novel sorption pipe reactor for solar thermal energy storage is developed and experimentally investigated to fulfill this gap. The modular heat storage system consists of sorption pipe units with an internal perforated diffuser pipe network and the sorption material filled in between. Vermiculite-calcium chloride composite material was employed as the sorbent in the reactor and its thermal performance was investigated under different inlet air humidity levels. It was found that, a fourfold increase of absolute humidity difference of air led to approximately 2.3 times boost in average power output from 313 W to 730 W and an 8.8 times boost of average exergy from 4.8 W to 42.3 W. According to the testing results, each of three sorption pipes can provide an average air temperature lift of 24.1 degrees C over 20 h corresponding to a system total energy storage capacity of 25.5 kW h and energy storage density of 290 kW h/m(3).
机译：在过去的十年中，吸附式储热系统因其高的储能密度和长期的储热潜力而受到关注。吸附反应器的开发对于这些系统的未来发展至关重要，但是在该主题上做得很少。在这项研究中，开发了一种用于太阳能热能存储的新型吸附管反应器，并进行了实验研究以弥补这一空白。模块化储热系统由吸附管单元和内部填充的吸附材料组成，该吸附管单元具有内部多孔扩散管网络。用the石-氯化钙复合材料作为反应器中的吸附剂，并研究了在不同进气湿度下的热性能。结果发现，空气绝对湿度差的四倍增加导致平均输出功率从313 W提高到730 W约2.3倍，平均火用功率从4.8 W提高到42.3 W约8.8倍。根据测试结果，三个吸附管中的每一个可在20小时内提供24.1摄氏度的平均气温升高，对应于系统25.5 kW h的总储能容量和290 kW h / m的储能密度（3）。

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