| 摘要 |
The present invention relates to a conduit for use in a geothermal heating and cooling system wherein said conduit comprises 2 or more pipes, wherein said 2 or more pipes are twisted together, wherein further that said 2 or more twisted pipes are twisted around a central pipe, further provided that the functions of said central pipe include, but are not limited to, serving as a conduit for a tremie pipe, serving as a support pipe, serving as an insulating pipe or serving as a tremie pipe.
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