Patent ID: 7143813

Claim:
A heat rejection system, comprising: a manifold configured with a passageway for carrying a coolant medium; at least one substantially cylindrical heat pipe configured with a heat input portion in thermal contact with the coolant medium within the manifold, the at least one substantially cylindrical heat pipe further configured with a heat output portion, and the at least one substantially cylindrical heat pipe having a length; and a heat radiator in thermal contact with the heat output portion of the at least one substantially cylindrical heat pipe, the heat radiator comprising: a protective bumper enclosing an exposed outer surface of the at least one substantially cylindrical heat pipe, wherein the protective bumper has an outer surface and a substantially annular cross section, and at least one heat dissipating fin integral with the protective bumper, wherein the protective bumper and at least one heat dissipating fin are fabricated from a foam material to provide thermal conductivity away from the at least one substantially cylindrical heat pipe, wherein the at least one fin extends outward from the outer surface of the protective bumper.