张盼,朱桂花,吕硕,赵妤,刘汉昌,陈丰

• 1:北方民族大学化学与化学工程学院
• 2:北方民族大学国家民委化工技术基础重点实验室
• 3:北方民族大学机电工程学院

摘要(Abstract)：

以高钙粉煤灰为基体材料，Al-Si共晶合金粉为相变介质，利用干压成型及混合烧结法制备了直径为15 mm蓄热球，研究了成型压力及合金粉含量对蓄热球综合性能的影响，并对其堆积承载高度及性价比进行了估算和分析。结果表明：相同成型压力下，合金粉含量越高，蓄热球的相变潜热、密度及开裂载荷越高。合金粉含量相同时，蓄热球密度及开裂载荷随成型压力的增大而增大，而相变潜热基本不受成型压力影响。蓄热球相变潜热越高其熔化功率越大，说明其相对导热性能越好，而密度对熔化功率影响不大。以单个蓄热球常温下开裂载荷的大小作为堆积体底层接触力的理论峰值，估算出对应的最大理论堆积高度范围为47.7～287.2 m,而蓄热球在高温下的堆积高度均不小于20 m。利用层次分析法(AHP)对蓄热球进行综合性价比分析，当合金粉含量为40%,成型压力为8 MPa时，蓄热球综合应用性价比较优。

关键词(KeyWords)： Al-Si共晶合金粉;高钙粉煤灰;应用性能;相变蓄热球;层次分析法

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51666001);; 北方民族大学研究生创新项目(YCX21136);; 宁夏低品质资源高值化利用技术研发人才小高地项目(20191200)

作者(Author): 张盼,朱桂花,吕硕,赵妤,刘汉昌,陈丰

DOI: 10.13289/j.issn.1009-6264.2022-0083

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