Arrangement for tubular heat exchangers located in a lake

Heat exchange apparatus adapted to be anchored to the bottom of a lake, said heat exchange apparatus comprising a heat exchanger means adapted to circulate a heat exchanger medium for absorbing heat from a lake, a first end of a plurality of heat pipes are connected in a heat transfer relation with said heat exchanger means, said plurality of heat pipes being sealed at both ends and each forming a closed housing for a refrigerant, means for anchoring said heat exchanger means adapted to anchor said heat exchanger means to the bottom of the lake, said means for anchoring comprises a plate and a second end of said plurality of heat pipes adapted to be buried in the bottom of the lake in heat transfer contact with the bottom of the lake, and when said second end of said plurality of heat pipes is buried in heat transfer contact with the bottom of the lake, heat is transferred from the bottom of the lake to the refrigerant and from the refrigerant to the heat exchanger means connected in said heat transfer relation with said first end of said plurality of heat pipes, the second end of said plurality of heat pipes thereby becoming solidly frozen in place as a result of heat being transferred from the bottom of the lake and forming ice at the bottom of the lake, so that the heat exchanger means becomes anchored to the bottom of the lake.