English：

Taking the 44⁃2 zero⁃carbon building project of Xiong’ an Power Construction Zhihui City asthe research object, aiming at the shortcomings of high energy consumption and low heat exchangeefficiency of traditional fresh air system, the construction system of fresh air pipeline based on shallowground heat exchange technology was studied. The research focuses on the construction process of buriedpipelines, and puts forward quality control measures such as dynamic monitoring of thermal performance.By comparing the operation data of the traditional air conditioning system, the economic benefit analysismodel of the whole life cycle is established, and the carbon emission reduction index is introduced tocarry out the social benefit evaluation. The results show that the energy saving rate of this technology is32% higher than that of the traditional air conditioning system, the space occupied by the equipment isreduced by 40%, and the indoor temperature fluctuation range can be maintained within ±1.5℃ . Thewhole cycle of the project can reduce carbon emissions by about 4 800t.