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堇青石-莫来石和工业石蜡的低温节能特性对比研究
引用本文:任春蕊,刘阳生,曾辉.堇青石-莫来石和工业石蜡的低温节能特性对比研究[J].北京大学学报(自然科学版),2012,48(5):812-816.
作者姓名:任春蕊  刘阳生  曾辉
作者单位:北京大学深圳研究生院,深圳,518055;北京大学环境科学与工程学院,北京,100871
基金项目:国家自然科学基金(21077002)资助
摘    要:在自行搭建的低温余热能源回收系统上,以堇青石-莫来石蜂窝蓄热体和工业石蜡为蓄热材料,进行低品位能余热回收利用实验.考察蓄热体种类、主要工艺参数-换向周期等对余热回收率的影响,并结合工业石蜡DSC分析结果,探讨相变蓄热材料对蓄放热性能的影响机制.结果表明:合理换向周期为5分钟;蜂窝蓄热体的蓄放热速率均大于工业石蜡的蓄放热...

关 键 词:低品位余热回收  蓄热材料  相变材料(PCM)  蓄放热性能

Comparative Study on the Performance of Cordierite-Mullite and Industrial Paraffin Wax in Low-Temperature Energy Recovery
REN Chunrui,LIU Yangsheng,ZENG Hui.Comparative Study on the Performance of Cordierite-Mullite and Industrial Paraffin Wax in Low-Temperature Energy Recovery[J].Acta Scientiarum Naturalium Universitatis Pekinensis,2012,48(5):812-816.
Authors:REN Chunrui  LIU Yangsheng  ZENG Hui
Institution:1.Shenzhen Graduate School,Peking University,Shenzhen 518055;2.College of Environmental Science and Engineering,Peking University,Beijing 100871
Abstract:Comparison experiment for low temperature waste heat recovery was conducted between two thermal storage materials,namely cordierite-mullite honeycomb regenerator and industrial paraffin wax.The results show that the reasonable cycle time is five minutes.Both of heat charge and discharge characteristics of cordierite-mullite honeycomb regenerator are better than those of industrial paraffin wax.The process of heat charge is faster than heat discharge for the two materials.The temperature efficiencies of cordierite-mullite honeycomb regenerator and industrial paraffin wax are 42.45% and 35%,respectively.Both materials are cheap and easy to transport and store.They will have a good application prospect in the field of low-grade waste heat recovery.
Keywords:low-grade waste heat recovery  heat storage materials  phase change materials(PCM)  heat charging and discharging performance
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