基于吸附制冷的实际运行工况,本文设计搭建了一种新型的测试整体成型吸附剂性能装置;通过吸附床温度变化特性测试及吸附剂性能测试实验,确定了该装置用于吸附剂性能测试实验的可行性及可靠性。吸附床温度变化特性测试表明,该装置可以在有效控制整体成型吸附剂吸附脱附温度情况下,完成吸附剂在吸附和脱附循环过程中的性能测试;吸附剂性能测试实验表明,经活化后的13X沸石分子筛对吸附质-水的最大吸附量为0.196g/g,单位质量最大吸附速率为1.79×10~(-3)g/(g·min),冷凝/蒸发器的最低蒸发温度为12℃,平均冷凝温度为27℃;测试得到的13X沸石分子筛对水的吸附量与参考文献中该值的平均偏差仅为5.206%,因此,本实验装置用于整体成型以及堆积状态下的吸附剂性能测试具有可行性及可靠性;利用该系统可以为吸附制冷提供吸附剂性能的基础实验数据。
Based on the actual working condition of the adsorption refrigeration, this paper a new performance testing device of integral adsorbent was designed and built. The feasibility and reliability of the device in adsorbent performance testing were confirmed by experiments of temperature variation characteristics of adsorbent bed and adsorbent performance. The results of temperature variation characteristics of adsorbent bed showed that adsorbent performance of adsorbent during the processes of adsorption and desorption cycle could be tested by the device with effectively controlling the temperature of integral adsorbent. The experimental results adsorbent performance showed that the maximum adsorption capacity of activated zeolite 13X to adsorbate-water was 0.196g/g and the maximum adsorption rate per unit mass was 1.79×10^-3g/(g.min), the lowest evaporation temperature and the average condensation temperature of the condenser/evaporator was 12℃ and 27℃, respectively. The deviation of average adsorption capacity of activated zeolite 13X to water between the testing and references was only 5.206%. So this device had good feasibility and reliability for testing performance of adsorbent in both integral shaping and packing state. The system can provide basic experimental data of adsorbent performance for adsorption refrigeration.