基于分布式冷熱電三聯供系統的吸收式蓄能裝置研究

李忞智 張曉靈 石文星 史琳

摘 要：余熱蓄能系統應用在分布式冷熱電三聯供（CCHP）系統中，可以有效改善系統性能，提高系統節能率。針對CCHP系統對蓄能系統的要求，該文設計搭建了最大功率30 kW溴化鋰吸收式蓄能實驗系統。該系統能夠測試不同冷熱源條件下，蓄能系統的特性（輸入特性以及輸出特性）。實驗結果顯示系統運行穩定，說明這一技術路線可行，滿足實際系統蓄能需要；同時蓄能裝置的實際蓄能密度達到90 kW·h/m3，有效蓄能利用系數達到了0.5以上，達到了該領域的先進水平。

關鍵詞：分布式 吸收式蓄能 溴化鋰 蓄能密度

Study of Absorption Energy Storage Device Based on CCHP System

Li Minzhi1 Zhang Xiaoling2 Shi Wenxing2 Shi Lin1

（1.Tsinghua University Department of Thermal Engineering； 2.Tsinghua University Department of Architectural Technology and Science）

Abstract：The performance of CCHP system can be greatly improved by using thermal energy storage （TES） device. Considering the feature CCHP system demands， a LiBr-H2O absorption energy storage system with highest output power 30kW 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.

Key Words：CCHP；Absorption energy storage；LiBr；Energy storage density

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