This way, when a cooling fluid such as air, water, glycol, and the like, including mixtures of gas and liquid, is passed into conduit 9 as shown by arrow 15 the fluid will come incontact with large surface area 6 either directly or indirectly through the upper side 18 (FIG. 2) of the conduit means as shown by arrow 16, thereby picking up heat from member 2 and removing that heat from the member as