中央空调分区模型控制策略研究

A Control Strategy of Central Air-Conditioning Zoning Model

为了改善中央空调现有的全局控制策略,采用一种分区模型的局部控制策略。以广东省某购物广场中央空调节能改造项目作为研究背景,分析了购物广场内部结构特点和功能区域构成。将建筑中功能相似区域进行分区,找出各区域冷负荷规律,并根据不同区域冷负荷特点建立数学模型,"因地制宜"地制定控制策略,充分挖掘节能潜力。采取新老系统对比运行的方法,利用组态软件分别对电能数据进行采集、记录、查询和分析,验证了分区模型控制策略的可行性及节能效果。

To improve the global control strategy of current central air-conditioning systems,we adopt a zoning model as a type of local control strategy. We set our research background to be an energy-saving project in Guangdong province involving a central air-conditioning system in a shopping mall. The features of the internal structure of the shopping mall and the formation of its functional zones are analyzed. The building is partitioned according to the similarity of its zones with regard to their functionalities. We then seek for the cooling load rules for individual zones and establish the corresponding mathematical models that agree with the rules. Therefore a locally-adaptive control strategy is formulated aiming to exploit the potential in energy conservation. We compare the operation of this novel system with conventional systems,gathering,recording,querying and analyzing energy consumption data respectively by means of configuration software,and verify the feasibility and effectiveness of the zoning model based control strategy.