Current status and prospects of ground buried pipe technology
Ground source heat pump technology is one of the important ways to utilize geothermal energy,which can replace conventional energy for cooling and heating in buildings,playing an active role in energy saving and emission reduction in construction.Ground buried pipes are an important component of the ground source heat pump system.Current research on ground buried pipe technology mainly focuses on shallow(40～200 m)and medium-deep(1 500～3 000 m)ground buried pipes.The development of shallow and medium-deep ground buried pipe technology provides a reference for the research of medium-shallow(200～600 m)ground buried pipe technology.The heat exchange capacity of a single well of medium-shallow ground buried pipes is several times that of shallow ground buried pipes,and they can bear a greater imbalance rate of cold and heat load,which expands the application range of ground source heat pumps.The text summarizes the basic principles,theoretical research,and technical applications of shallow,medium-shallow,and medium-deep buried pipes,and looks forward to the future development of the technology.
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