Heat exchanger

Claim 1

A heat exchanger comprising: a. a support for shaft; b. a shaft rotatably mounted on said support; c. a heat exchanger housing mounted on said shaft to rotate therewith, said housing having an entry and an exit for a first fluid and an entry and an exit for a second fluid, a first fluid and a second fluid within said housing, a heat exchanger element within said housing to exchange heat between said first fluid and said second fluid, with said heat exchanger element separating said first fluid and said second fluid, said heat exchanger element being a convoluted bellows type member with the folds of the bellows being transverse to the housing shaft said bellows type member having radially outwardly extending heat conductive members alternately connected at their outward ends to form a first set of folds and connected at their inward ends to form a second set of folds, said first and second set of folds forming a continuous fluid tight heat exchanger element separating the two fluids, said first set of folds being open inwardly toward the heat exchanger center and filled by one of said fluids, said second set of folds being open outwardly toward the housing and filled by one of said fluids, with the first and second fluids being on opposite sides of said heat exchanger element and within the folds of the convoluted bellows, with centrifugal force assisting in the circulation of the fluids within the folds due to density differentials provided by heat transfer through the heat conductive heat exchanger members.