| 摘要 |
The invention relates to a heat source or a heat sink unit with thermal ground coupling, comprising at least one ground probe (1) arranged in the earth (3), whereby each earth probe (1) is a probe tube (2) made from several pile tube segments (20). An open dip tube (26) or a U-shaped tube loop (29) is arranged in the probe tube (2) at the open lower end thereof. Said unit is characterised in that each pile tube segment (20) is made from ductile cast iron, the pile tube segments (20) are embodied such as to plug into each other at the ends thereof (21, 22) and each pile tube segment (20) comprises, at the one end (21) thereof, a conical outer circumference (21') and, at the other end thereof, a sleeve (22) embodied with a shoulder stop (22") having a matching conical internal circumference (22'), whereby the diameter thereof and the cone angle are such that on driving in the pile tube segments (20) a positive and sealed connection between the pile tube segments (20) is generated.
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