Heat exchanger and use of heat exchanger

Abstract

There is provided a heat exchanger adapted to exchange heat between a first fluid and a second fluid. The heat exchanger comprises an outer tubular body, an inner body, a first inlet, a first outlet, a second inlet and a second outlet. The outer tubular body has an inner surface. The inner body is arranged inside the outer tubular body and has an outer surface facing the inner surface of the outer tubular body, leaving free a gap between the inner surface of the outer tubular body and the outer surface of the inner body. The first inlet and the first outlet are arranged to provide a first flow path for the first fluid from the first inlet to the first outlet via a first channel and via a second channel. The second inlet and the second outlet are arranged to provide a second flow path from the second inlet to the second outlet for the second fluid in the gap between the inner surface of the outer tubular body and the outer surface of the inner body. The outer tubular body comprises the first channel. The inner body comprises the second channel. The inner body and the second channel are rotatable relative to the outer tubular body and the first channel.

Dependencies are inferred from the claim text.