中文摘要：

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速率;两种蓄热材料的放热过程均快于蓄热过程;实验条件下,两种蓄热材料的总温度效率分别为41.45%和35%。两种材料价格便宜,储存运输便利,在中低温余热回收领域具有较好的应用前景。

英文摘要：

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.