基于分布式冷热电三联供系统的吸收式蓄能装置研究

Study of Absorption Energy Storage Device Based on CCHP System

余热蓄能系统应用在分布式冷热电三联供(CCHP)系统中,可以有效改善系统性能,提高系统节能率。针对CCHP系统对蓄能系统的要求,该文设计搭建了最大功率30kW溴化锂吸收式蓄能实验系统。该系统能够测试不同冷热源条件下,蓄能系统的特性(输入特性以及输出特性)。实验结果显示系统运行稳定,说明这一技术路线可行,满足实际系统蓄能需要;同时蓄能装置的实际蓄能密度达到90 kW h/m3,有效蓄能利用系数达到了0.5以上,达到了该领域的先进水平。

The performance of CCHP system can be greatly improved by using thermal energy storage（TES） device. Considering the feature CCHP system demands, a Li Br-H2 O absorption energy storage system with highest output power 30 kW has been designed and built.The system can test the feature of storage device（including input characteristic and output characteristic） under different temperature conditions. The experiment results show that the system works smoothly; indicating this kind of storage technology is reliable. The energy storage density of the device is 90 kW h/m3 and the effective storage index is 0.5, which reaches advanced level in this field.