Abstract:
A heat pipe (10) has a large area vapor tube for radiant heat loss and has connected thereto a subcooled liquid return tube (14) for a return of the condensed liquid to the evaporator portion of the vapor tube. Wicking material plugs (28, 30) return the liquid and provide equilibrium along the length of the system. The separate return of the liquid through liquid tube (14) permits a long heat pipe which may have several thermal connections.
Abstract:
A thermal engine is disclosed which is operable as a heat pump, refrigerator, or air conditioner. Vaporized working fluid from a first evaporator, which extracts heat from elements desired to be cooled, is fed to a first region of an osmotic pump which also has a second region containing a solution of the working fluid and a preselected solute, the second region being separated from the first region by a membrane permeable to the vaporized working fluid but not to the solute. A second evaporator, which may be driven by waste heat, is operatively coupled to the second region of the osmotic pump by means of a counterflow heat exchanger having a first path for conveying relatively dilute solution from the second region of the osmotic pump to the second evaporator and a second path for conveying relatively concentrated solution from the second evaporator to the second region of the osmotic pump. Output heat from the thermal engine is obtained from a condenser which condenses vaporized working fluid from the second evaporator. The condensed working fluid undergoes constant enthalpy expansion, after which it is returned to the first evaporator.
Abstract:
A heat pipe cooling module assembly (20) for cooling electronic components (28) includes a plurality of heat pipe modules (22) comprising condenser and evaporator sections (24, 26) and working fluid therein. In a preferred embodiment, each evaporator section comprises a sandwich construction of a pair of flat outer plates (34), a pair of wick pads (36) and a separator plate (38) comprising channels extending from the evaporator section into the condenser section.
Abstract:
Un assemblage de modules de refroidissement par tubes de dissipation de chaleur (20) pour refroidir des composants électroniques (28) comprend une pluralité de modules à tubes de dissipation de chaleur (22) comprenant des sections à condenseur et évaporateur (24, 26) et un fluide de travail à l'intérieur. Dans un mode préférentiel de réalisation, chaque section d'évaporateur comprend une construction en sandwich d'une paire de plaques externes plates (34), une paire de tampons amortisseurs en forme de mèches (36) et une plaque de séparation (38) comprenant des canaux s'étendant depuis la section d'évaporation dans la section de condensation.
Abstract:
A heat pipe cooling module assembly (20) for cooling electronic components (28) includes a plurality of heat pipe modules (22) comprising condenser and evaporator sections (24, 26) and working fluid therein. In a preferred embodiment, each evaporator section comprises a sandwich construction of a pair of flat outer plates (34), a pair of wick pads (36) and a separator plate (38) comprising channels extending from the evaporator section into the condenser section.
Abstract:
Un tuyau thermique (10) possède un tube de vapeur de grande superficie pour une perte de chaleur rayonnante et est connecté à un tube de retour de liquide sous-refroidi (14) destiné à retourner le liquide condensé dans la partie d'évaporation du tube de vapeur. Des bouchons de matériau de mèche (28, 30) retournent le liquide et permettent l'équilibre sur toute la longueur du système. Le retour séparé du liquide par le tube de liquide (14) permet d'avoir un long tuyau thermique pouvant comporter plusieurs connexions thermiques.
Abstract:
A thermal engine is disclosed which is operable as a heat pump, refrigerator, or air conditioner. Vaporized working fluid from a first evaporator, which extracts heat from elements desired to be cooled, is fed to a first region of an osmotic pump which also has a second region containing a solution of the working fluid and a preselected solute, the second region being separated from the first region by a membrane permeable to the vaporized working fluid but not to the solute. A second evaporator, which may be driven by waste heat, is operatively coupled to the second region of the osmotic pump by means of a counterflow heat exchanger having a first path for conveying relatively dilute solution from the second region of the osmotic pump to the second evaporator and a second path for conveying relatively concentrated solution from the second evaporator to the second region of the osmotic pump. Output heat from the thermal engine is obtained from a condenser which condenses vaporized working fluid from the second evaporator. The condensed working fluid undergoes constant enthalpy expansion, after which it is returned to the first evaporator.
Abstract:
A heat pipe (10) has a large area vapor tube for radiant heat loss and has connected thereto a subcooled liquid return tube (14) for a return of the condensed liquid to the evaporator portion of the vapor tube. Wicking material plugs (28, 30) return the liquid and provide equilibrium along the length of the system. The separate return of the liquid through liquid tube (14) permits a long heat pipe which may have several thermal connections.