Study On Building Dynamic Adjustment Performance And Energy-Saving Of Heat Metering System

In the field of building energy efficiency,building cold source of air conditioning system as one of the main contributors to building energy consumption,there is a huge energy saving potential.Therefore,it is of great significance to study the energy saving optimization of building air conditioning cold source system.In this paper,the main components of the cold source system and the main adjustment methods are analyzed.The model analysis of the chiller,cooling tower and water pump,and the analysis of the control method of the variable flow system and variable flow system of air conditioning cold source.Taking a high-rise apartment building in Beijing as the research object,this paper establishes the mathematical model of the equipment and the system control method used in this paper.The hourly load of the building was simulated by DeST software,and the model of the building air conditioning cold source system was established by using TRNSYS software.The model of the primary pump cold source system and the two pump cold source system under the optimal strategy of the four strategies are presented,which include the control strategies of the joint operation of the four different refrigerators.Finally,the simulation results are obtained and compared and analyzed.The simulation results show that the four strategy,the first to open a small refrigerator to separate large refrigerator,finally open at the same time two Taiwan refrigerator by Taiwan this open strategy method the best energy-saving effect,than the conventional strategy of energy saving of 12%,but the stability of the system as the same opening sequence average load method.Under the best energy saving effect,the energy consumption of primary pump system is only 63.9% of that of the two pump system.In the stability of the two pump system has more advantages,the actual application of the selection of the two systems need to be considered.