Heat transfer device

Abstract

A heat transfer device for transferring heat from a first surface to a second surface is disclosed. The device comprises a body defining a fluid circuit arranged to pass in proximity to the first and second surfaces. The fluid circuit contains a ferrofluid. The device also comprises a magnet arranged, when magnetised, to produce a magnetic field in a part of the fluid circuit, such that, when the magnet is magnetised, the ferrofluid is transported around the fluid circuit so as to transfer heat from the first surface to the second surface. The device may find application in missile or aerospace applications.

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