Experimental investigation on a fluidized-bed adsorber/desorber for the adsorption refrigeration system
Experimental investigation on a fluidized-bed adsorber/desorber for the adsorption refrigeration system
复制标题
DOI：
10.1016/j.ijrefrig.2011.05.020
复制
发表时间：
2012-05
期刊：
影响因子：
--
通讯作者：
Q. Wang;X. Gao;J. Y. Xu;A. Maiga;Guangming Chen
中科院分区：
文献类型：
--
作者：
Q. Wang;X. Gao;J. Y. Xu;A. Maiga;Guangming Chen
本文提出并设计了一种可用于吸附制冷系统的流化床吸附/脱附器，以取代传统的固定床吸附/脱附器。以活性炭和R134 a为工质对，建立了流化床吸收/解吸装置的实验装置，并与固定床吸收/解吸装置的性能进行了比较。实验结果表明，2kg活性炭在流化床吸附/脱附器中的吸附和脱附过程中均能显著强化传热传质，3 kg活性炭的强化效果与此相似，但4kg活性炭的强化效果因活性炭流化不完全而减弱。该方法克服了传统固定床吸收/解吸器传热传质性能差的缺点，可望大大提高吸附制冷机的SCP。
This paper proposed and designed a fluidized-bed adsorber/desorber which can be used in the adsorption refrigeration system in place of the conventional fixed-bed one. An experimental setup was built to investigate the performance of the fluidized-bed absorber/desorber and compare with that of the fixed-bed one using the working pair of activated carbon and R134a. The experimental results with 2kg activated carbon show that the heat and mass transfer can be greatly enhanced either in adsorption or desorption in the proposed fluidized-bed adsorber/desorber The experimental results with 3kg activated carbon show the similar enhancement, but the enhancement with 4kg activated carbon was weakened either in adsorption or desorption due to the incomplete fluidization of the activated carbon. By way of the new approach, the poor heat and mass transfer in the conventional fixed-bed absorber/desorber can be overcome and the SCP of the adsorption refrigerator can be expected to be greatly improved accordingly.