An array of a plurality of heat pipe are mounted in spaced relationship to one another with the hot end of the heat pipes in a heated environment, e.g. the exhaust flue of a furnace, and the cold end outside the furnace. Heat conversion equipment is connected to the cold end of the heat pipes.
NOTICE OF GOVERNMENT SUPPORT
This invention was made with Government support under Contract No. DE-FC36-04GO14044 awarded by the Department of Energy. The United States government may have certain rights in this invention.