Patent ID: 8402784

Claim:
A system for transferring heat, comprising: a first flow path through at least one neck portion defined by at least one boundary wall; a first heat source external to and in thermal communication with the at least one boundary wall; an inflow portion in fluid communication with the first flow path; an outflow portion in fluid communication with the first flow path; and a drive system for driving a first fluid through the first flow path, whereby heat is transferred from the first heat source to the first fluid as it flows through the first flow path, wherein the drive system comprises: at least one first radial array of blades positioned within the neck portion; at least one second radial array of blades axially displaced from the neck portion; and a gear box linking the first radial array of blades to the second radial array of blades, wherein a rotation of the first radial array of blades provides a driving force for the second radial array of blades.