Heat exchanger

摘要

A heat exchanger 10 includes a conduit 12 for conveying cooling fluid relative to a body to be cooled. A heat transfer arrangement 62 is arranged in communication with an interior of the conduit 12, the heat transfer arrangement 62 and the conduit 12 together defining an assembly that is mountable adjacent the body to be cooled, convective heat exchange occurring, in use, due to movement of the cooling fluid relative to the body and to the heat transfer arrangement 62 of the assembly and radiant heat exchange occurring between the body and at least part of the heat transfer arrangement 62 of the assembly.

主权项

1. A heat exchanger which includes a conduit for conveying heat exchange gas relative to a device; and at least one duct in communication with an interior of the conduit, the at least one duct, in use, being positioned adjacent an external surface of an external wall of the device to form, together with the wall of the device, a passage through which the heat exchange gas is able to pass, the conduit and the at least one duct together defining an assembly that is mountable, in use, adjacent to, and externally of, the device, whereby radiant heat exchange occurs between the device and the at least one duct and convective heat exchange occurs due to movement of the heat exchange gas relative to the device and to the at least one duct, the duct further comprising heat transfer enhancing parts in the form of vortex inducing components arranged on an inner side of a wall of the at least one duct to lie within a flow path of the heat exchange gas in the passage to cause vortices to be developed in the heat exchange gas thereby to reduce formation of thermal boundary layers and thereby to enhance at least convective heat transfer between the at least one duct and the heat exchange gas.