Device for preventing ice formation on a surface layer

Abstract

The invention is concerned with an arrangement for preventing weather-induced formation of ice to a top surface ( 76 ) of an outdoor surface layer ( 74 ), comprising a heat conduit received in the surface layer ( 74 ). The heat conduit comprises a conduit ( 10, 12 ) for a circulating fluid adapted to emit heat to the surface layer ( 74 ) from a collector line ( 20, 22 ) adapted to receive heat from a volume ( 40 ) of water.

1 . A concrete cofferdam defining a closed space and adapted to be received floating in a volume of water and comprising
 a collector conduit for a circulating fluid and connected to a heat conduit and adapted to receive heat from the volume of water,   a roof forming a bridge deck of the cofferdam;   a surface layer ( 74 ) provided onto a heat insulating layer of the bridge deck; and   a heat conduit for a circulating fluid and received in the surface layer and connected to the collector conduit for emitting heat to the surface layer.   
     
     
         2 . The concrete cofferdam according to  claim 1 , said cofferdam forming a part of a pier assembled of a plurality of concrete cofferdams. 
     
     
         3 . The concrete cofferdam according to  claim 1 , said cofferdam forming a substructure for a building construction. 
     
     
         4 . The concrete cofferdam according to  claim 1 , wherein the circulating fluid is collected directly from the water in the volume of water. 
     
     
         5 . The concrete cofferdam according to  claim 1 , wherein the circulating fluid collects heat by heat exchange with the volume of water. 
     
     
         6 . The concrete cofferdam according to  claim 4 , wherein the circulating fluid collects heat from the volume of water via a heat pump.