Abstract: An air conditioning system uses heat-pipes in combination with a cooling coil to increase either the dehumidification capacity or the efficiency and capacity of an air-conditioning system. In the dehumidification mode, the secondary cooling coil is inactive, and the heat pipes operate as a heat exchanger between the warm return air and the cold supply air of the air conditioning system to precool the return air and reheat the supply air, increasing the latent capacity of the main cooling coil. In the efficiency and capacity boosting mode, the secondary cooling coil is activated by introducing a portion of the cooling fluid from the air-conditioning system. This results in a neutralization of the effect of the heat pipes as well as an increase in effective heat-exchange area between the cooling fluid and the air, therefore produces an increase in the capacity of the system.

Abstract: Disclosed is a regenerator loaded with a relatively cheap heat regenerative material which exhibits excellent specific heat, heat transfer capability and recuperativeness under cryogenic temperatures lower than, for example, the liquid nitrogen temperature. The regenerator is filled with a heat regenerative material comprising at least one R-M system compound, where R is at least one rare earth element selected from the group consisting of Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, HO, Er, Tm, Yb and Lu, and M is at least one metal selected from the group consisting of Al, Ga, In and Tl.

Abstract: A passive thermal control system for use in a spacecraft or satellite. The system uses at least two heat pipe and radiator systems connected to a heat generating load of the spacecraft. The radiators are located at different sides of the spacecraft. The heat pipes can be prevented from transferring heat from the radiators to the heat generating load such that a first radiator can be exposed to heat from sunlight while the second radiator and heat pipe can still operate to remove heat from the heat generating load.

Abstract: A cooling system for cooling heat-producing electronic devices, such as CCDs, included in an electronic apparatus, such as a television camera, comprises electronic cooling devices disposed near the heat-producing electronic devices, buffering heat conducting mechanisms connecting the heat-producing electronic devices to the electronic cooling devices to transfer heat by conduction from the heat-producing electronic devices to the electronic cooling devices, a motor-driven fan disposed in an air passage formed by dividing the interior of the body of the electronic apparatus by a partition wall, and a heat radiating coil unit is formed by coiling a small tube in loops and sealing a heat conveying fluid in the small tube, such coil unit having heat absorbing portions connected to the electronic cooling devices and a heat radiating portion disposed in the air passage.

Abstract: The invention is a cooling structure for a high power density surface. Fluid is pumped along interconnected and continuous multiple channels on the backside of a sintered metal wick bonded to the cooled surface. The channels are located within a fluid layer which also includes multiple fluid holes, so that each hole is surrounded by interconnected channels. The holes are connected to a manifold to collect or supply the pumped fluid. The channels which surround each hole are connected to another manifold attached to the structure, and the proximity of the channels to the holes assures that fluid flow resistance within the sintered metal wick is minimized by the multiple short, wide paths.

Abstract: An integral heat pipe, heat exchanger, and clamping plate. A base plate functioning as an evaporator has disposed in it a multiplicity of intersecting parallel and perpendicular internal channels extending laterally substantially across the base plate. A sintered copper thermal wick is applied to all channels. Thin-walled condenser tubes forming a condenser region are joined to the base plate at intersections of width wise and cross wise channels contained in the base plate. A multiplicity of fins extend to all condenser tubes. For heat pipe arrangements operating in horizontal configurations, all wick-lined channels within the base plate remain open. For heat pipe arrangements intended to operate in oblique or vertical configurations, horizontally extending channels vertically displaced relative to other horizontal channels are isolated from the latter by a multiplicity of plugs.

Abstract: Cooling liquid flowing through cooling-liquid passages cools in heat-transmission manner an inner layer on an inner surface of an impermeable intermediate layer and is directed through a piping to an interface between the intermediate and outer layers, whereby the porous outer layer is cooled by latent heat generated by evaporation of the cooling liquid infiltrated into the porous outer layer.

Abstract: A heat exchanger having a pair of header pipes each of which includes a U-shaped wall and a front wall connected thereto to define a hollow portion. The front wall has a plurality of arc-shaped portions and plane portions each of which is disposed between adjacent arc-shaped portions in the longitudinal direction of the header pipe. Each of the plane portions are provided with an elongated hole therethrough. A plurality of fluid tubes are disposed between the header pipes in fluid communication therewith via the elongated holes. A plurality of corrugated fins are disposed between the opposed outer surfaces of the fluid tubes. Thus, the pressure loss of refrigerant in the heat exchanger is very low.

Abstract: An apparatus is provided for cooling electronic components mounted on a cuit board. The circuit board is placed in thermal contact with a heat sink enclosure that has an interior cavity and a release opening that provides a path from the interior cavity to the external ambient. A meltable pellet blocks the release opening. A wick is bonded to the inside surface of the interior cavity. The device is sealed with a working fluid that permeates the wick. When the components get hot, the heat is transferred through the heat sink enclosure to the working fluid in the wick, causing the working fluid to vaporize. The vapors remain trapped in the interior cavity until the pellet melts, allowing the vapor to be released and the temperature of the heat sink enclosure to be stabilized or lowered.

Abstract: A heat exchange module comprises a rotating-wheel type regenerative heat exchanger unit having a plurality of heat exchange elements mounted in baskets through the volume of the heat exchanger wheel. The heat exchanger wheel rotates about its axis so that the heat exchange elements are heated by a hot gas flow over a portion of the rotation, and transfer the heat to an air flow over another portion of the rotation. At least some of the heat exchange elements include phase change materials, such as salts, that absorb heat while maintaining a constant temperature. The phase change materials narrow the range of temperatures reached by the heat exchange elements located at various positions of the heat exchanger wheel. The phase change materials prevent excessively low temperatures that can result in condensation of corrosive acids on the surfaces of the heat exchange elements.

Abstract: An electronic apparatus comprises an electronic circuit unit having heat-generating electronic parts and cooling jackets fed with a coolant so as to cool the heat-generating electronic parts, and a coolant cooling unit having a heat exchanger for cooling the coolant from the cooling jackets and a pump for pressurizing and feeding the cooled coolant to the cooling jackets. The electronic circuit unit and the coolant cooling unit are housed in the same cabinet, and a partition plate is provided between the electronic circuit unit and coolant cooling unit to partition the two so that in the event of occurrence of liquid leakage, the coolant may be prevented from migrating from the coolant cooling unit to the electronic circuit unit. A coolant drainage drain may be provided at the bottom of a U-shaped portion of a path for circulating the coolant to facilitate drainage of the coolant.

Abstract: A fluid circulator and temperature regulator apparatus for use in an electrophoresis process with a sequencing cell including a cooling jacket having an inlet and an outlet, the apparatus being adapted to be connected to the cooling jacket inlet and outlet, and the apparatus comprising a reservoir, a pump for circulating cooling fluid through the cooling jacket, and a heat exchanger for regulating the temperature of the cooling fluid, the apparatus being operable for filling and draining the reservoir, for degasifying fluid in the reservoir, and for filling and draining the cell.

Abstract: A thermal energy storage device for use in a pulsed power supply to store waste heat produced in a high-power burst operation utilizes lithium hydride as the phase change thermal energy storage material. The device includes an outer container encapsulating the lithium hydride and an inner container supporting a hydrogen sorbing sponge material such as activated carbon. The inner container is in communication with the interior of the outer container to receive hydrogen dissociated from the lithium hydride at elevated temperatures.

Abstract: An apparatus for limiting the temperature of a body associated with a heating system in which the heat exchange between a first heated body comprising a part of the heating system and a second body, upon exceeding a particular temperature, is to be decreased. A chamber is built between the first heated body and the second body and filled with a liquid. The chamber is impermeably connected with a flexible equalization vessel. If the temperature of the first heated body or second body, or the temperature within the chamber, exceeds the boiling temperature of the filling liquid, the filling liquid vaporizes and condenses in the connected equalization vessel. In this manner, heat conduction through the liquid between the first heated body and the second body is substantially prevented or in any case is significantly less than in the case of the filled chamber.

Abstract: A new and improved portable, immersible heat exchanger apparatus is provided for immersion into a quantity of material that is to cooled or heated. The apparatus includes a continuous copper tube assembly which is comprised of a straight, horizontal handle portion, a helically coiled immersion portion, and a vertically oriented, hook-shaped hanger portion. The top end of the immersion portion is connected to the handle portion; and the bottom end of the immersion portion is connected to the hanger portion. In use, the immersion portion is immersed in the material that is to undergo heat exchange. Tap water from a faucet is passed through the tube assembly to serve as a medium for heat exchange. The water enters the tube assembly at the handle portion, runs through the handle portion, the immersion portion, and the hanger portion, and exits from the end of the hanger portion. A flexible hose connects the handle portion to the water faucet.

Abstract: A system is disclosed for detecting a malfunction in a fuel/lubricating oil heat exchanger which includes a pressure differential generator located in the pressure balancing conduit connecting the lubricating oil reservoir with the lubricating enclosure. The pressure differential generator may be a cavitation venturi tube having a throat which, under normal conditions, allows sub-sonic fluid flow which enables the air in the lubricating enclosure to freely communicate with the interior of the oil reservoir and vice versa. When fuel is mixed with the lubricating oil, due to a malfunction in the fuel/oil heat exchanger, the fuel enters the lubricating oil reservoir causing the fluid level within the reservoir to rise and overflow. The cavitation venturi tube is then supplied with a comparatively hot mixture of fuel and oil having a vapor pressure approximately equal to the reference pressure within the lubricating enclosure.

Abstract: A heating and cooling device comprising a box type heat exchange tank containing a heat transfer medium having an thermal accumulation effect therein and a heat exchange pipe arranged in said heat exchange tank. An air discharging member is mounted to an outlet of the heat exchange pipe and provided with a fan for blowing air in the heat exchange pipe into a room. An air suction member connected to said inlet of the heat exchange pipe, to suck outside air and supply it into the heat exchange pipe, A heater is disposed just below said air suction member, to heat an air entering the air suction member in a heating operation of the device. A cooling chamber is also disposed, to cool the heat transfer medium in the heat exchange tank. A water pump may be disposed below the heat exchange tank, so as to pump a relatively cold underground water into the heat exchange tank. The underground water is used as the heat transfer medium for a cooling operation of the device.

Abstract: A pack of heat transfer plates for regenerative heat exchangers is operationally adapted to absorb heat from a flue gas flowing in one axial direction along the main flow axis and release such heat to a combustion air flowing in another axial direction. The pack includes first and second mutually identical profiled plates which are arranged in mutually contiguous, contacting relationship with double ridges of the first plate intersecting double ridges of the second plate. The double ridges of the first and second plates extending symmetrically and obliquely in mutually opposite directions relative to the main flow axis of the heat exchange media flowing through the pack. The pack includes a third plate having provided thereon continuous extending parallel channel formers. One side of the third plate is in contiguous relationship with the second plate.

Abstract: Disclosed is a dynamic vacuum insulation comprising sidewalls enclosing an evacuated chamber and gas control means for releasing hydrogen gas into a chamber to increase gas molecule conduction of heat across the chamber and retrieving hydrogen gas from the chamber. The gas control means includes a metal hydride that absorbs and retains hydrogen gas at cooler temperatures and releases hydrogen gas at hotter temperatures; a hydride heating means for selectively heating the metal hydride to temperatures high enough to release hydrogen gas from the metal hydride; and gate means positioned between the metal hydride and the chamber for selectively allowing hydrogen to flow or not to flow between said metal hydride and said chamber.

Abstract: A heat sink for electrical circuit components includes a chill plate which is formed by a front plate and a back plate. The front and back plates are interconnected and cooperate to define passages for liquid coolant. Cooling fins extend from the back plate and are exposed to the atmosphere to conduct heat from the back plate. A pump is mounted on the chill plate and induces a flow of the cooling medium through passages between the front and back plates. An expansion chamber is also disposed between the front and back plates and holds gas which is compressible by the liquid cooling medium to accommodate expansion of the liquid cooling medium.