Performance evaluation on the factors affecting the heat extraction performance of deep coaxial borehole heat exchanger

Geothermal energy has the characteristics of stability, efficiency, and abundant reserves. Fully developing and utilizing geothermal energy is of great significance for achieving the “dual carbon” goal. This article selects and analyzes nine key factors and their weight relationships that affect the heat extraction capacity of deep coaxial borehole heat exchanger from three aspects: operating parameters, geological parameters, and exchanger parameters, providing useful references and guidance for researcher and decision makers in related fields.