提升围护结构保温与气密性是我国北方建筑节能的重要战略，在严寒/寒冷的气候背景下推广使用热回收新风系统也是大势所趋。然而，这一新风系统存在冬季送风温度偏低与霜冻的问题。通过在新风系统中集成太阳能与相变储能的方法，有望实现稳定的新风预热，进而保障系统运行。现有的相关研究对系统集成以及相变蓄放热过程的同步特性还缺乏了解。本课题以融合了太阳能空气式相变蓄热的热回收新风系统为研究对象，重点关注空气型相变储能装置的边界特征与优化，开发其数学模型并通过CFD方法与实验手段进行辅助分析；在开放的系统平台上构建空气型相变储能装置、太阳能集热器与热回收模块的集成分析系统与运行条件，建立实验平台验证其准确性；通过设计模块容量的匹配，模拟冬季工况下多参数组合的系统运行，得到该集成系统的基础数据与优化策略，最终实现太阳能空气式蓄热优化利用并提高新风系统的有效运行时间，为严寒地区建筑新风系统的改进提供理论支撑。

For the building energy conservation in northern China, it is an important strategy to enhance the insulation and air tightness of the building envelope. It is also a trend to promote the use of heat recovery fresh air system in the context of cold / severe cold climate. However, it has a problem of low air temperature and frost in winter. Through the integration of solar energy and phase change energy storage in the system, it is possible to achieve stable fresh air preheating, thereby ensuring the operation of the system. Currently, there is lack of understanding of the system integration and the synchronization characteristics of the phase change heat storage and heat release process. Taking the integrated fresh air system based on phase change thermal storage motivated by solar heated air as the research object, we focus on the boundary feature and optimization of phase change energy storage device of air type, develop its mathematical model and take the method of CFD and experimental tests for aided analysis. We plan to construct integrated system analysis model of phase change energy storage device of air type, solar collector and heat recovery module on the open system platform and its operation condition. The experimental platform will be established accordingly to test its accuracy. Through designing the match of capacity module and modeling the operations with multi groups of parameters under winter conditions, we can get the basic data of integration system and its optimization strategy. Finally, it is able to realize solar air storage and thermal utilization optimization, and improve the effective running time of the fresh air system, providing theoretical support for the improvement of fresh air system in cold regions.