Application of vertical pipe ground-source heat pump to multi-storey factory buildings

Taking a ground-source heat pump system of a multi-storey factory building in Langfang City, Hebei Province as an object, analyses in detail the resource condition and design scheme for applying ground-source heat pump to multi-storey factory buildings. Points out that the bore spacing, buried depth and pipe length should be adjusted based on different geological conditions to keep the heat balance in soil, and that not only should the pipe length be considered, but the total occupied area, and the number, spacing and depth of boreholes when selecting U-type vertical pipe (single U pipe or double U pipe) heat exchangers.