Abstract: The heat pipe has a condensing area at one end and an evaporating area at the other end. An ion drag pump is within the condensing area to receive dielectric refrigerant condensate in its inlet. There is a liquid carrying tube having one end connected to the pump outlet and having its other end terminating adjacent the evaporating area to discharge refrigerant condensate therein. The evaporating area has heat receiving flow paths into which the condensate is adapted to flow and be vaporized, there being a vapor flow path from the evaporating area through which the vaporized refrigerant returns to the condensing area.The method includes cooling one end of the heat pipe to liquefy refrigerant therein to form a condensate, flowing the condensate into an ion drag pump and applying a sufficiently high voltage across a cathode and anode of the pump to produce ions in the refrigerant condensate, the ions then being accelerated toward the anode so as to create fluid motion and pumping action through the pump inlet.

Abstract: A heat pipe (90) of increased heat transport capacity, capable of being primed under gravity conditions, comprises a sealed envelope (95) defining an evaporator (110) and a condenser (115). An arterial tube (125) of large liquid carrying capability is provided with an axial slot (130) formed on the upper surface of a segment of the tube (125). The slot (130) has beveled surfaces (135), (140) which increase the capillary pumping action to transverse wicking bodies (150, 155). The bodies (150, 155) transport working fluid to or from circumferential grooves (120) formed in the evaporator (110) and condenser (115).

Abstract: An improved heat pipe (115) of increased heat transport capacity comprising a vapor tube (120) and a liquid-condensate return tube (130). An outwardly extending conduit (125), disposed in both the evaporator section (135) and evaporator section (140) of the heat pipe (115), provides fluid communication between the vapor tube (120) and the return tube (130). Circumferential v-shaped grooves (145) terminate at a slot-like opening (165) formed in each of the conduits (125). A cap member (170) traverses each opening (165) and coacts with the grooves (145) to form a plurality of fluid passageways (175).

Abstract: A device for generating an air jet without the use of moving parts is proed. High voltage is used to create a corona discharge electric wind in a ducted, compact, portable generator that can be used for augmentation cooling applications where high voltage is available.

Abstract: The heat exchange structure made by the method of the present invention comprises a plurality of sheets, desirably thin film plastic, bonded to one another to form the unitized structure. Alternate first pairs of sheets are bonded one to another along a first set of longitudinally extending bond lines positioned at first transverse locations along the width dimensions of the sheets. There is a second set of pairs of alternately spaced sheets (made up of adjacent sheets of adjoining first pairs of sheets) which are bonded one to another along a second set of longitudinally extending bond lines positioned transversely intermittently with respect to the first set of longitudinal bond lines. In the method of the present invention, the sheets are arranged in vertically stacked relationship. One set of bonding bars is positioned between sets of adjacent intermediate pairs of sheets at the locations where the first set of longitudinally extending bond lines are to be formed.