Whats a trench system?
Most closed loop is laid horizontally in the ground adjacent to the building. But any area near a home or business with appropriate soil conditions and adequate space will suffice. Ground loop pipe is normally laid to a depth of 1.2 meters (single trench) or 1.8 meters (double trench) in trenches of 1 meter wide and 1 meter apart. The larger the area of ground and the greater amount of pipe installed yields higher temperature maintainance, higher COP and better long term savings for the owner.
