Study On The Optimal Time Interval Of Quality Regulation Of Heating System Under The Condition Of Load Change

At present,domestic and foreign researches on the operation and regulation of heating systems are mainly focused on the specific methods of regulation,and very few studies on the time interval of regulation in the operation and regulation of heating systems.The thermal load of a building changes over time,so the operation of the heating system needs to be continuously adjusted to meet the requirements of supply and demand balance.However,on the one hand,the heating system cannot be adjusted at all times,because the stable operation of the heating system must be guaranteed;on the other hand,if the heating system runs for a long time under a fixed working condition,it will cause the user side to fail to achieve basic Heating demand or waste of energy.The purpose of this paper is to study the optimal time interval for the heating system quality adjustment,and then to guide the adjustment of the heating system operation.First,the time interval for the quality adjustment of the heating system was defined,and the influence of the length of the time interval on the operation of the heating system was analyzed.Then the conditions for judging the optimal time interval for the quality adjustment of the heating system were proposed,and the heating system was finally proved.The existence of the best time interval for quality adjustment lays the foundation for subsequent research.Secondly,the thermal dynamic characteristics of the heating pipe network are studied,and the delay time of the heating pipe network is proposed,that is,the time it takes for the heat to reach the building entrance from the heat source.By analyzing the main factors that affect the delay time of the heating network,a mathematical model of the delay time of the heating network is established,and the correctness of the model is verified by experiments,so that the formula for calculating the delay time of the heating network is obtained.Then,combined with the hysteresis of the building envelope,the influence of different outdoor meteorological parameters on the dynamic heat demand of the building is analyzed,and then the idea of the superposition method in the Double-s model is used,that is,the influence of each meteorological parameter on the dynamic thermal load of the building.Converted into the effect of outdoor temperature on the dynamic thermal load of the building,the formula for calculating the dynamic heat demand of the building was finally obtained.Finally,a mathematical model is established based on theoretical analysis,and an actual heat exchange station is selected,and the solution results of the model are applied to the process of its operation adjustment,so that the heating system can achieve good energy-saving effects on the premise that it meets the heating needs of the user side.,And finally verified the correctness of the model.