溴化锂溶液蓄能空调/供热系统工作特性模拟与分析  

Numerical simulation and analysis on operation characteristics of energy storage system for air-conditioning and heating using water-LiBr solution as working fluid

作　　者：徐士鸣[1] 徐长红[1] 张莉[1] 

机构地区：[1]大连理工大学能源与动力学院,辽宁大连116024

出　　处：《大连理工大学学报》2008年第4期503-508,共6页Journal of Dalian University of Technology

基　　金：国家自然科学基金资助项目(50576006)

摘　　要：在所建立的系统运行动态数学模型基础上，针对具体应用实例对以澳化锂溶液为工作介质的蓄能系统进行数值模拟．以长江流域某城市一宾馆建筑为例，在设计日室外温度变化范围为29～38℃，空调最大冷负荷为1450kW，日需冷量为19890kWh，日需50℃洗浴用热水20t（720kwh）条件下，分别对蓄能空调／供热系统在全量和分量蓄能策略下的工作情况进行数值模拟．分别得到了蓄能空调／供热系统所需的澳化锂溶液充注量、储罐容积、溶液参数、设备负荷变化等重要基础数据及变化规律．这些数据和变化规律是先进蓄能空调／供热系统设计、控制、技术经济评价、设备选型或设计等工作的基础．Based on the dynamic models established in the first part of the study, the numerical simulation for a concrete application example of the energy storage system using water-LiBr solution as working fluid was done. The example for simulation is an energy storage air-conditioning and hot water supplying system of the hotel building located near by Yangzi River. On design day, the outdoor temperature change is between 29℃ and 38℃, the maximum cooling load is 1 450 kW, the total cooling capacity is 19 890 kWh and total 50℃ hot water for showering is 20 t which needs heat about 720 kWh. Based on these design conditions, the operation characteristics of the system are simulated respectively under the full and partial storage strategies. The important data and its changing rules like the quantity of working solution charged into the system, the volume of the two storage tanks, the working solution property changes at each status point in the system, the load and its variation of the devices in the system, etc. are obtained by simulation. All these are the basic data for the system design, control, economic estimation, equipment selection or design and so on.

关 键 词：能量转换 化学势能 储存 溴化锂溶液 数值模拟 

分 类 号：TK02[动力工程及工程热物理]