A heat pipe (10) has an elliptical cross-section. Heat exchange fins (60) are mounted to the heat pipe (10) at the condenser end (50). The fins (60) are galvanized on the heat pipe (10). Spacer pins (65) can be used to support and space the heat exchange fins (60) from each other. Internal spacers can be provided within the heat pipe (10) to add support to the heat pipe structure for longer heat pipes.