Research On The Heat Storage Mode Of The Phased-changing Water-storage Capacity And The Structure Of The Heat Storage Water Tank

Electric heat storage heating system is getting more and more attention because of its environmental protection,high efficiency,energy saving,safety and other advantages.Electric heat storage heating system not only can be applied to a building with a small area which are not accessible to the municipal pipe network,such as shopping malls,schools,highway toll station and service areas,but also can be applied to the power grid whose demand side is fluctuating and power generation side needs to consume new energy,especially can be applicable to power plants that needs to adjust its peak,such as thermal power,hydropower,nuclear power and wind power,photovoltaic power generation,biomass and tidal energy power,and to all kinds of small distributed energy grids,isolated networks,micro-grids and so on.The electric heat storage heating system is a complex system of production,storage,transportation,distribution and use,which is one more step than conventional heating systems.Studying the economic storage mode of electric heat storage heating system is vital to ensure the supply of heating demand and to improve the energy efficiency and economy of the system when the supply meets the demand.The operation of electric heat storage heating system which is influenced and controlled by multivariate is highly complexity.The storage mode of heat storage tank which can make the electric heat storage heating system run more stable and more economical is the key content of this paper.In this paper,a storage mode of heat storage water tank is put forward which is more economical and effective than the traditional storage mode of heat storage water tank by studying the storage model and economic energy storage strategy of electric storage water tank.The storage mode is a storage mode in which change the amount of storage in stages.The storage model of this storage mode is derived.Secondly,a structure of a heat storage water tank is designed which can be applied to the new storage mode,and it can better realize the hierarchical operation of thermal storage water tank.Then the heat storage water tank is simulated.It is mainly a simulation study of reasonable orifice spacing and orifice flow velocity and the minimum storage capacity of heat storage water tank at reasonable orifice spacing and reasonable flow velocity.Finally,this storage mode is applied in engineering.By calculating the operating cost of the heat storage system under two different storage modes,the economy of this new storage mode is analyzed.