Optimization Analysis On Operation Strategy Of Water Storage Air Conditioning System

Water storage air conditioning system can relieve the imbalance of city's power grid,reducing the electrical consumption of peak power and adding that of valley power period.It can effectively reduce the power cost by the city electric charge policy.Ground source heat pump air conditioning system is widely used in residential,office,commercial and other kinds of buildings because of its sustainability,efficiency and energy saving benefits.However,only reasonably control the operation mode of the power supply equipments for two air conditioning systems,formulating appropriate operation strategies,can guarantee the economy,safety and reliability of the system,shortening the payback period and getting due benefit.This article is based on the research of an existing water storage air conditioning system,ground source heat pump air conditioning system and their control strategies,through repeated comparison and selection,formulating three kinds of control strategies of cooling water storage air conditioning system which is respectively called chillers single cooling strategy,water storage tank optimal cooling strategy and the water storage tank prior cooling strategy.This article also formulate two kinds of strategies of ground source heat pump air conditioning system,which is respectively called time control strategy and temperature control strategy.Based on the data of the project,the hourly load of the building and the control strategies,four kinds of water storage air conditioning system models are set up in the TRNSYS simulation platform,which are the chillers single cooling model,the cold storage model,the optimal cooling model,and the prior cooling model and set three kinds of models of ground source heat pump air conditioning system which are called winter control model,summer time control model and summer temperature control model.Then,these models are run one by one and output the running data.The advantages and disadvantages of different operating strategies are compared in energy consumption and electricity costs,typical day analysis,energy consumption and other aspects.Finally,the article analyze and evaluate the working effect of each control strategy and find that water storage air conditioning system has significant effect on peak shifting and valley filling.When simultaneously use the water storage air conditioning system,the storage tank optimal cooling strategy has better peak shifting and valley filling efficiency and economy than that of the prior control strategy.At the meantime,the temperature operation strategy of ground source heat pump air conditioning system has better energy saving advantages,reducing the start-stop time of ground source heat pump units and chillers,improving the operation of the unit COP and increasing service life.