电石渣骨架定型相变材料储热性能研究

doi:10.3969/j.issn.2097-0706.2022.04.009

综合智慧能源 ›› 2022, Vol. 44 ›› Issue (4): 71-75.doi: 10.3969/j.issn.2097-0706.2022.04.009

电石渣骨架定型相变材料储热性能研究

熊亚选¹(), 王辉祥¹, 胡子亮¹, 药晨华¹, 宋超宇¹, 丁玉龙²

1.北京建筑大学供热供燃气通风及空调工程北京市重点试验室,北京100044
2.英国伯明翰大学伯明翰储能中心,伯明翰 B15 2TT

收稿日期:2021-04-27 修回日期:2021-05-25 出版日期:2022-04-25 发布日期:2022-05-05
作者简介:熊亚选（1977）,男,教授,博士,从事高温熔盐储热方面的研究, xiongyaxuan@bucea.edu.cn;
王辉祥（1997）,男,在读硕士研究生,从事固体储热方面的研究;
胡子亮（1997）,男,在读硕士研究生,从事固体储热方面的研究;
药晨华（1997）,男,在读硕士研究生,从事固体储热方面的研究;
宋超宇（1998）,女,在读硕士研究生,从事固体储热方面的研究;
丁玉龙（1962）,男,教授,英国皇家工程院院士,博士,从事储能技术方面的研究。
基金资助:
北京市教委科研项目(KM201910016011)

Study on heat storage performance of shape-stable carbide slag skeleton phase change material

XIONG Yaxuan¹(), WANG Huixiang¹, HU Ziliang¹, YAO Chenhua¹, SONG Chaoyu¹, DING Yulong²

1. Key Lab of HVAC,Beijing University of Civil Engineering and Architecture,Beijing 100044,China
2. Birmingham Centerfor Energy storage,University of Birmingham,Birmingham B15 2TT,UK

Received:2021-04-27 Revised:2021-05-25 Online:2022-04-25 Published:2022-05-05

摘要/Abstract

摘要：

电石渣是生产乙炔过程中伴生的工业固体废弃物,大量堆积污染环境。在碳中和背景下,为资源化利用固体废弃物,以电石渣为骨架材料,NaNO₃为相变材料,采用冷压缩-热烧结法制备电石渣基复合相变储热材料。采用X射线衍射法（XRD）、热重-差示扫描量热法（TG-DSC）和激光导热分析法（LFA）对该材料进行了表征和分析。结果表明,该复合材料具备良好的化学相容性,NaNO₃和电石渣质量比为5∶5时,各种热物理性能最好,为最佳比例。该比例下复合材料的导热系数最大为0.18 W/（m∙K）,50~500 ℃内的储热密度为457.2 J/g,具备良好的储热性能。

关键词: 固体废弃物, 电石渣, 骨架材料, 相变材料, 热能储存, 冷压缩-热烧结法, 碳中和

Abstract:

Calcium carbide slag is an industrial solid waste associated with the production of acetylene,and a large number of accumulations pollute the environment.Under the background of carbon neutralization,calcium carbide slag-based composite phase change heat storage material was prepared by cold compression-hot sintering method with calcium carbide slag as skeleton material and NaNO₃ as phase change material for resource utilization of solid waste.The material was characterized by X-ray diffraction（XRD）,thermogravimetry-differential scanning calorimetry（TG-DSC） and laser thermal conductivity analysis（LFA）.The results showed that the composite had good chemical compatibility.When the mass ratio of NaNO₃ to carbide slag was 5∶5,various thermophysical properties were the best,which was the best ratio.Under this ratio,the maximum thermal conductivity of the composite was 0.18 W/（m∙K）,and the thermal storage density was 457.2 J/g at 50~500 °C,which showed good thermal storage performance.

Key words: solid waste, calcium carbide slag, framework material, phase change materials, thermal energy storage, cold compression-hot sintering method, carbon neutrality

中图分类号:

TK02

熊亚选, 王辉祥, 胡子亮, 药晨华, 宋超宇, 丁玉龙. 电石渣骨架定型相变材料储热性能研究[J]. 综合智慧能源, 2022, 44(4): 71-75.

XIONG Yaxuan, WANG Huixiang, HU Ziliang, YAO Chenhua, SONG Chaoyu, DING Yulong. Study on heat storage performance of shape-stable carbide slag skeleton phase change material[J]. Integrated Intelligent Energy, 2022, 44(4): 71-75.

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项目	复合材料
项目	CC1	CC2	CC3	CC4	CC5	CC6	CC7
ω(NaNO₃)/%	70.0	60.0	57.5	55.0	52.5	50.0	40.0
ω(电石渣)/%	30.0	40.0	42.5	45.0	47.5	50.0	60.0
ω(PVA)/%	3.0	3.0	3.0	3.0	3.0	3.0	3.0
烧结后材料外观	S	L	L	L	L	N	N

电石渣骨架定型相变材料储热性能研究

Study on heat storage performance of shape-stable carbide slag skeleton phase change material

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