基于平行流扁管吸附式制冷系统性能实验研究

设计了一种新型平行流铝扁管吸附床结构,搭建了吸附式制冷实验台。通过实验研究不同运行参数下的吸附式制冷系统性能差异,比较不同热源和冷源温度、换热流体流量下吸附式制冷系统COP的变化。结果表明,当冷、热源温度为10℃和60℃,换热流体流量为0.26 kg/s时,新型吸附式制冷系统COP达到最大值0.35。当冷源温度在20℃附近时,增大热源温度可有效提高吸附式制冷系统COP,并且换热流体流量越大,增加的幅度越明显;当换热流体流量在0.13~0.26 kg/s范围内时,系统COP随着冷源温度的增大剧烈下降,并且换热流体流量越小,下降趋势越显著;当热源温度在55~60℃范围内时,COP随着换热流体温度的增大明显增大,并且冷源温度越高,COP增大的趋势越明显。

Performance Analysis of Adsorption Refrigeration System Based on Parallel Flow Flat Tube

A novel parallel flow aluminum flat tube adsorption bed structure was designed and an adsorption type refrigeration experimental bench was set up.The performance difference of the adsorption refrigeration system under different external operation strategies was experimentally studied,and the changes of the COP of the adsorption refrigeration system under different heat source and cold source temperature and heat exchange fluid flow were compared.The results show that when the cold source temperature is 10℃,the heat source temperature is 60℃and the flow rate is 0.26 kg/s,the COP of the new adsorption refrigeration system reaches the maximum value of0.35 under the experimental conditions.When the cold source temperature is near 20℃,increasing the heat source temperature can effectively improve the COP of the adsorption refrigeration system,and the larger the heat exchange fluid flow,the more significant the increase;when the heat exchange fluid flow is 0.13~0.26 kg/s,the system COP decreases sharply with the increase of the temperature of the cold source,and the smaller the flow rate of the heat exchange fluid,the more significant the downward trend.When the heat source temperature is 55~60℃,the COP changes with heat transfer.The increase of the fluid temperature significantly increases,and the higher the temperature of the cold source,the more obvious the tendency of COP increase.