一种空调系统实时节能舒适控制新方法的可行性研究

Feasibility Study on a New Method of Real Time Energy Saving and Comfort Control for Air Conditioning System

针对现有热舒适控制方法存在的不能根据房间扰动进行实时控制、不能兼顾舒适和节能、控制模型参数整定不易精确及智能控制方法固有的限制性等问题,提出了基于复合形法的实时节能舒适控制方法。复合形法不需要精确的数学模型,通过不同热环境参数组合与测得的其相应的空调能耗值,求得在满足热舒适条件下使空调能耗值最小时的热环境参数的最优参数组合。扰动的变化和空调系统动作对室内热环境参数和PMV的影响必然出现滞后现象。通过对夏热冬冷地区办公建筑中扰动变化和空调系统动作对工作区热环境参数和PMV改变的滞后时间比较,得出了空调系统能够贴近最优参数组合运行的结论,因此在夏热冬冷地区办公建筑内利用复合形进行的实时节能舒适控制是可行性的。

The existing comfort control cannot support real-time control according to the change of the disturbances,and it also cannot consider comfort and economy energy at the same time for the air conditioning systems.And the setting of control model parameters is not easy to adjust accurately and intelligent control methods have inherent limitations. Therefore,the method of real-time energy saving and comfort control was proposed based on complex method. Complex method does not need precise mathematical equation of the thermal environment parameters and the energy consumption of the air conditioning system. Through different combinations of thermal environment parameters and the measured values of the corresponding air conditioning energy consumption,the optimal parameters combination of indoor thermal environment that corresponding to the minimum value of air conditioning energy consumption under the condition of satisfying thermal comfort can be obtained. The change of the disturbances and the action of the air conditioning systems would have influence on thermal environment parameters and PMV index,and their effects on indoor parameters would appear lag phenomenon inevitably. The lag time of disturbance changes and the action of the air conditioning system influencing the thermal environment parameters and PMV index in office buildings in hot summer and cold winter area are compared,and it is concluded that the air conditioning systems can be close to the optimal parameters combination of operation. Therefore,it is feasible to take this real-time energy-saving and comfort control method for air conditioning system in office buildings in hot summer and cold winter area.