16 sets of regenerators with the same total volume and different aspect ratio are studied under the same operating conditions.The quasi-steady state cold charge capacity,cold discharge capacity and charge-discharge efficiency are compared.The results show that the performance of the regenerator reaches a quasi-steady state after 20 cycles.When the aspect ratio of the single regenerator increases from 0.6 to 3,the cold charging/cold discharging capacity gradually increases,but the charge-discharge efficiency gradually decreases.When the parallel number of the regenerator increases from 1 to 6,the cold charge,cold discharge and cooling efficiency of the regenerator group all decrease.When designing the geometric structure of the regenerator,it is recommended to consider the single form or series form with an aspect ratio of 2.If a parallel connection is unavoidable,the number of parallel connections should be reduced as much as possible.
关键词
传热/数值模拟/填充床/蓄冷/长径比
Key words
heat transfer/numerical simulation/packed beds/cold storage/aspect ratio
维普
万方数据