大型商业建筑集中空调制冷系统储能经济性分析方法

Economic analysis method for energy storage of central air conditioning refrigeration system in large commercial buildings

对商业建筑集中空调制冷系统储能的经济性进行了分析。首先,介绍了制冷系统采用水蓄冷、冰蓄冷、锂电池储能3种储能方案的运行原理。其次,建立了空调制冷系统采用3种储能方案的冷负荷模型及经济性分析模型。最后,通过算例对3种储能方案与常规制冷方案的结果进行了对比分析。结果表明,对于该算例,商业建筑集中空调制冷系统采用水蓄冷方案的全寿命周期总成本在3种储能方案中最低,锂电池储能次之,冰蓄冷最高。本文提出的空调制冷系统多种储能方案经济性比较方法,可供商业建筑根据项目所在地电价政策与项目特点选择经济合理的储能方案时参考。

This paper analyses the economy of energy storage of the central air conditioning refrigeration system in commercial buildings.Firstly,the operating principles of three energy storage methods for the refrigeration system,namely water cool storage,ice cool storage,and lithium battery energy storage,are presented.Secondly,the cooling load model and the economic analysis model for the three energy storage schemes adopted by the air conditioning refrigeration system are established.Finally,through an example calculation,the results of the proposed three energy storage schemes are compared and analysed with the conventional refrigeration scheme.The results show that for this example calculation,the total life cycle cost of the water cool storage scheme for the central air conditioning refrigeration system of commercial buildings is the lowest among the three energy storage schemes,followed by lithium battery energy storage,and ice cool storage is the highest.The economic comparison method of multiple energy storage schemes for air conditioning refrigeration systems proposed in this paper can provide a reference for commercial buildings to select an economic and reasonable energy storage scheme according to the local electricity price policy and project characteristics.