HEAT EXCHANGER TUBE SUPPORT

A heat exchanger (20) for heat exchange between a first fluid (910) and a second fluid (912) has a plurality of tube sections (40), each comprising; an interior for passing the first fluid (910); an exterior for exposure to the second fluid (912); a first leg (46); a second leg (48); a turn (49) joining the first leg (46) to the second leg (48); and a first face (54) and a second face (56). A support (200, 202) has at least one carbon member (210-222, 230-242) engaging the plurality of tube sections (40).