Study On Interseason Storage Device In Cold Region

People often talk about a topic that Low-carbon economy all over the world.The use of solar heating,especially solar heating with auxiliary heat sources,heat storage systems and automatic control systems,can greatly reduce energy consumption and environmental pollution.Due to the intermittent nature of solar energy,not only the difference between day and night,but also the difference of rain and snow weather and radiation energy in winter and summer,so this article mentioned the method of cross-seasonal solar thermal storage.This paper discusses the application of phase change heat storage technology in building heating,and develops a phase change heat storage device.This device has a strong heat storage capacity and good heat transfer performance.It can store heat in the non-heating season.Heating season release,thereby increasing the utilization of solar energy,to achieve the purpose of building energy efficiency.This requires the phase change heat storage device to maintain a higher heat storage efficiency and a shorter heat storage time during the heat storage process,and a rapid heat release can be achieved during the heat release process.The research work mainly focuses on the development of phase change materials,the design of phase change thermal storage devices,and the actual project test and operation conditions,aiming to provide references for the cross-season solar energy utilization.The method is to store solar energy in a non-heating season in a regenerative material with phase change material,and release heat during the heating season for building heating.Compared with conventional cross-season energy storage methods,this system has the characteristics of strong heat storage capacity,small heat loss,and stable and reliable heat release.This not only makes full use of the solar radiant energy during the non-heating season,but also stores it to the surface of shallow ground,which improves the utilization of solar energy throughout the year and overcomes a series of problems such as solar day-night and seasonal changes.The difference between the design of this system and other designs is that the heat transfer medium used in this system design is an antifreeze used in solar heat collection systems,and the heat storage and heat transfer medium is cheap and readily available water and phase change materials.This not only improves The economics of the system also ensure the practicality of the system.Underground thermal storage is a practical and feasible way to use solar energy across seasons so far.It can store solar heat in the spring,summer,and autumn seasons underground for use in winter heating.The phase change material is used as the heat storage medium in the system.It is considered that the phase change material is not only a heat transfer material but also a heat storage material.The heat capacity is moderate,and its volumetric heat capacity is relatively large.In this paper,a solar energy system is designed for the solar thermal energy storage system of seasonal solar energy.This system is mainly used to store solar radiant energy in the non-heating season to the underground thermal storage.When solar energy cannot meet the heat load of the building in winter,it is used.The heat stored in the regenerator heats the building.The experimental heat storage body was used to study the energy storage characteristics of the heat storage body.Based on the design of the heat storage body,an economic analysis was conducted on the heating system of the residential building.The detailed system was performed using a typical residential building in Aba Prefecture as an example,Design analysis.