Application of horizontal ground heat exchangers to protective engineering

Establishes a heat transfer model of ground heat exchangers, and carries out experiments to verify the reliability of the model. By the model, analyses the heat transfer of the buried pipes between surrounding rock and rock, which is 0.5 m depth, and the heat flow through envelope surfaces. Quantitatively analyses the influences of the depth of buried pipes, thickness of insulating layer and different rocks on the surface heat flow.