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首页> 外文期刊>Journal of Energy Storage >A novel form stable PCM based bio composite material for solar thermal energy storage applications
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A novel form stable PCM based bio composite material for solar thermal energy storage applications

机译：一种新型稳定的基于PCM的基于PCM的生物复合材料，用于太阳能热能存储应用

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摘要

Phase change materials found to be a promising solution in the field of thermal energy storage. However, the low thermal conductivity and form stability over cycles of charging and discharging of PCM are challenges to address. In the proposed study, a novel and low cost biochar-PCM hybrid latent heat energy storage material have been developed and tested. The biochar is prepared from aquatic invasive weed plants by using a batch type pyrolyser. The characteristics and properties of the novel energy storage material have been evaluated using various experimental and analytical methods. The methods include Brunauer, Emmett and Teller (BET), Scanning electron microscope (SEM), X-ray powder diffraction (XRD), Differential Scanning Calorimetry (DSC), Thermogravimetric analysis (TGA), Fourier-transform infrared spectroscopy (FT-IR) and thermal conductivity tester. The study also put forward the optimized proportion of biochar and PCM in hybrid thermal energy storage material. The new material shows superior thermal conductivity over pure PCM as well as better stability due to the high carbon content and porosity of the developed biochar. Simple Impregnation method has been used to prepare form stable composite material which has good thermal and structural stability. The best mixing ratio (PCM: biochar) is found to be 6:4 (wt/w0/0) with minimum leakage of PCM from the composite. The sample prepared through this method yield all the desirable properties as compared to other developed samples. The chemical properties of the composite remain the same as the pure PCM, which confirms no chemical interaction between the PCM and biochar. The heat of fusion is calculated to be 179.4 J/g. The thermal conductivity of the PCM is enhanced up to 13.82 times with the addition of water hyacinth biochar as a supporting matrix. The addition of aluminum metal powder further increases the thermal conductivity by 17.27 times higher than that of PCM alone.
机译：相变材料发现是热能储存领域的有希望的解决方案。然而，对PCM充电和放电循环的低导热率和形成稳定性是地址的挑战。在拟议的研究中，开发和测试了一种新颖和低成本的Biochar-PCM混合潜热能储存材料。通过使用批量型热解器，生物炭由水生侵入杂草植物制备。使用各种实验和分析方法评估了新型储能材料的特性和性质。该方法包括Brunauer，Emmett和Teller（Bet），扫描电子显微镜（SEM），X射线粉末衍射（XRD），差示扫描量热法（DSC），热重分析（TGA），傅里叶变换红外光谱（FT-IR ）和导热率测试仪。该研究还提出了混合热能储存材料中的生物炭和PCM的优化比例。由于发达的生物炭的高碳含量和孔隙，新材料显示出纯PCM的卓越的导热率以及更好的稳定性。简单的浸渍方法已用于制备具有良好热和结构稳定性的稳定复合材料。最佳混合比（PCM：BioChOr）被发现为6：4（WT / W0 / 0），从复合材料中泄漏PCM。通过该方法制备的样品与其他开发样品相比产生所有所需的性质。复合材料的化学性质保持与纯PCM相同，这证实了PCM和BioChON之间没有化学相互作用。融合的热量计算为179.4J / g。随着水合风信子生物炭作为支撑基质，PCM的导热率高达13.82倍。加入铝金属粉末的热导率比单独的PCM高出17.27倍。

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