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Development of Novel Microencapsulated Hybrid Latent/Chemical Heat Storage Material
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2020-08-07 , DOI: 10.1021/acssuschemeng.0c01159 Hiroaki Koide 1 , Tatsuya Takahashi 1 , Hiroki Sakai 1 , Ade Kurniawan 2 , Justin Ning-Wei Chiu 3 , Takahiro Nomura 2
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2020-08-07 , DOI: 10.1021/acssuschemeng.0c01159 Hiroaki Koide 1 , Tatsuya Takahashi 1 , Hiroki Sakai 1 , Ade Kurniawan 2 , Justin Ning-Wei Chiu 3 , Takahiro Nomura 2
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Phase change materials (PCM) and thermochemical materials (TCM) attract increasing attention as next-generation heat storage technologies. A novel CaO-supported microencapsulated phase change material (CaO/MEPCM) has been developed by combining a latent heat storage material with a chemical heat storage material. With this novel concept, higher storage performance and improved structural benefits are obtained. Microencapsulated Al-25 wt % Si alloy as the PCM and CaO/Ca(OH)2 as the TCM are investigated in this paper. Sample preparation processes include (1) boehmite (AlOOH) treatment, (2) thermal oxidation treatment, (3) impregnation with CaO precursor, and (4) calcination. From SEM and XRD, the presence of CaO was confirmed on the microcapsules. According to the thermal analysis of CaO 30 wt %/MEPCM under a controlled H2O/N2 atmosphere, two endothermic peaks are present at around 500 and 577 °C, and the total heat storage capacity amounts to 412 kJ kg–1. Besides this, the stability in five cycles is also shown. It is also demonstrated through this work that the expansion of CaO can be successfully suppressed with the impregnation coating treatment. These results indicate that the combination of latent heat storage material and chemical heat storage material attains a synergistic effect and that the result is a novel heat storage material hybrid with high application potentials.
中文翻译：
新型微囊化潜在/化学混合蓄热材料的研制
作为下一代储热技术，相变材料（PCM）和热化学材料（TCM）引起了越来越多的关注。通过将潜热存储材料与化学储热材料结合，开发了一种新型的CaO负载微囊化相变材料（CaO / MEPCM）。利用这种新颖的概念，可以获得更高的存储性能和改善的结构效益。微囊化的Al-25 wt％Si合金作为PCM和CaO / Ca（OH）2本文将对中药进行研究。样品制备过程包括（1）勃姆石（AlOOH）处理，（2）热氧化处理，（3）用CaO前体浸渍和（4）煅烧。通过SEM和XRD，证实了在微胶囊上CaO的存在。根据在受控H 2 O / N 2气氛下对CaO 30 wt％/ MEPCM的热分析，在500和577°C左右存在两个吸热峰，总储热容量为412 kJ kg –1。除此之外，还显示了五个循环的稳定性。通过该工作还表明，通过浸渍涂覆处理可以成功地抑制CaO的膨胀。这些结果表明，潜热材料和化学储热材料的组合具有协同作用，结果是具有高应用潜力的新型储热材料杂化。
更新日期：2020-10-05
中文翻译：
新型微囊化潜在/化学混合蓄热材料的研制
作为下一代储热技术，相变材料（PCM）和热化学材料（TCM）引起了越来越多的关注。通过将潜热存储材料与化学储热材料结合，开发了一种新型的CaO负载微囊化相变材料（CaO / MEPCM）。利用这种新颖的概念，可以获得更高的存储性能和改善的结构效益。微囊化的Al-25 wt％Si合金作为PCM和CaO / Ca（OH）2本文将对中药进行研究。样品制备过程包括（1）勃姆石（AlOOH）处理，（2）热氧化处理，（3）用CaO前体浸渍和（4）煅烧。通过SEM和XRD，证实了在微胶囊上CaO的存在。根据在受控H 2 O / N 2气氛下对CaO 30 wt％/ MEPCM的热分析，在500和577°C左右存在两个吸热峰，总储热容量为412 kJ kg –1。除此之外，还显示了五个循环的稳定性。通过该工作还表明，通过浸渍涂覆处理可以成功地抑制CaO的膨胀。这些结果表明，潜热材料和化学储热材料的组合具有协同作用，结果是具有高应用潜力的新型储热材料杂化。
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