... energy source 4.CE Solar U Pipe Collector,2011 new solar U pipe collector,U Pipe Collector,2011 solar ... new solar pipe collector,copper solar collector,U pipe collector The U Pipe series solar collector are always ... into heat energy and transfers heat to metal U Pipe by an aluminum fin.The liquid(usually ... a glycol-water antifreeze mixture) in the U pipe heats up, and conducts the heat energy ...