Abstract: A heat sink includes a fin unit (10) and a heat pipe (40) for transferring heat from a heat-generating device to the fin unit. The fin unit includes a plurality of fins (20) parallel to each other. A flow channel (23) is defined between any of two neighboring fins for an airflow flowing therethrough. Each fin defines a through hole (25) having an axis of symmetry which extends along the flowing direction of the airflow. The through hole is for extension of the heat pipe therethrough. A plurality of protrusions (221, 222, 223, 224) extend outwardly from each fin. The protrusions being arranged irregularly around the heat pipe for guiding the airflow flowing to the heat pipe.

Abstract: A heat dissipation device is for contacting with a heat generating electronic device to remove heat from the electronic device. The heat dissipation device includes a base for thermally engaging with the electronic device and a plurality of fins arranged on a face of the base. A first heat pipe is located between the base and the fins, and is sinuously positioned on the face of the base. The first heat pipe has a first section located at a central portion of the base and a plurality of second sections located at lateral portions of the base. At least a second heat pipe has a first section thermally positioned to the base, and a second section extending remotely from the base and thermally engaging with the fins.

Abstract: An active thermal insulation system is disclosed. The system utilizes a cool air source in conjunction with a phase change material and/or conventional insulation. In a controlled manner, the cool air source facilitates the transition of the phase change material from a substantially liquid state to a substantially solid state allowing the solid phase change material to absorb heat. Cool air may be directed to the phase change material via a duct, plenum or other suitable passageway capable of introducing the cool air to the phase change material. A system outlet allows heat created during the phase change material's transition from a liquid state to a solid state to be exhausted to the atmosphere or elsewhere. The system is ideal for desert and other warm weather climates.

Abstract: The invention pertains to a valve for controlling a coolant flow to a heating element of a motor vehicle that features a first valve opening (2) that serves for supplying coolant to a heating element and can be closed by means of a first controllable closing element (3) and at least one second valve opening (4) that serves for bypassing the heating element and for controlling the pressure and can be closed by means of at least one second closing element (8), wherein the first closing element (3) and the second closing element (8) are arranged in one structural unit.

Abstract: Electromagnetic components are provided with a heat exchange mechanism. For example, a fluid-cooled electromagnetic field-functioning device, such as a motor, generator, transformer, solenoid or relay, comprises one or more electrical conductors. A monolithic body of phase change material substantially encapsulates the conductors or an inductor. At least one liquid-tight coolant channel is also substantially encapsulated within the body of phase change material. The coolant channel may be part of a heat pipe or cold plate. The coolant channel may be made by molding a conduit into the body, using a “lost wax” molding process, or injecting gas into the molten phase change material while it is in the mold. The coolant channel may also be formed at the juncture between the body and a cover over the body.

Abstract: A portable, self-contained liquid submersion cooling system that is suitable for cooling a number of electronic devices, including cooling heat-generating components in computer systems and other systems that use electronic, heat-generating components. The electronic device includes a housing having an interior space, a dielectric cooling liquid in the interior space, a heat-generating electronic component disposed within the space and submerged in the dielectric cooling liquid, and a pump for pumping the liquid into and out of the space, to and from a heat exchanger that is fixed to the housing outside the interior space. The heat exchanger includes a cooling liquid inlet, a cooling liquid outlet, and a flow path for cooling liquid therethrough from the cooling liquid inlet to the cooling liquid outlet. An air-moving device such as a fan can be used to blow air across the heat exchanger to increase heat transfer.

Abstract: The electronic component with heat transfer by boiling and condensation comprises heat exchange surfaces immersed in a heat conducting fluid constituted by the free ends of nanowires of a thermoelectric converter. An electrically insulating coating material with a low thermal conduction partially covers the nanowires above the heat conducting fluid. Each nanowire forms a thermocouple composed of two coaxial branches made from materials of different natures separated by a layer of electrically insulating material and electrically connected individually to the free end of the nanowire.

Abstract: A cooling device comprises a cooling unit (10) through which a fluid to be cooled, in particular hydraulic oil, can flow, the unit having a housing (18) and at least one filter unit (12) for filtering the fluid. The housing (18) of the cooling unit (10) comprises at least one overhanging support arm (14) which establishes a fluid communication between the corresponding filter unit (12) and the cooling unit (10). The filter unit (12) with the filter clement is thus arranged outside the actual housing of the cooling unit (10), while being connected in an integrated manner to the same by means of the support arm (14).

Abstract: A heat dissipation apparatus (10) for dissipating heat from a heat-generating electronic component includes a fin assembly (12) and a centrifugal blower (14). The fin assembly includes a plurality of laminar fins (121) thermally connecting with the heat-generating electronic component to absorb heat therefrom. The centrifugal blower provides an airflow flowing through the fin assembly to take heat away therefrom. The centrifugal blower includes a housing (141), a cover (142) disposed on the housing, and a rotor (143) rotatably received in a space formed between the housing and the cover. The fins of the fin assembly are disposed in the housing of the centrifugal blower and stacked together along a direction substantially parallel to a rotation axis (A) of the rotor.

Abstract: The invention relates to a heat exchanger (10) for an air heating apparatus (12) for integration into a housing which guides air. The heat exchanger has a longitudinal axis, wherewith air can be forcibly caused to flow around the heat exchanger in a “main flow direction” which is essentially perpendicular to said longitudinal axis. According to the invention, the heat exchanger has a cross sectional geometry [sic] perpendicular to the “main flow direction” which geometry is flattened with respect to a circular cross sectional geometry (32, 34, 36).

Abstract: A heat exchanger, method of fabrication and cooled electronics system employing the heat exchanger are provided. The heat exchanger, which in one embodiment cools air provided to heat generating components of a computer system, is disposed at an angle with respect to a direction of airflow. The heat exchanger includes a plurality of primary fins oriented parallel, and at least one plurality of secondary fins extending from at least one of a leading edge and a trailing edge of the plurality of primary fins. Each secondary fin extends from a respective primary fin at an angle other than 0° to facilitate airflow through the heat exchanger. Additionally, the secondary fins are fixedly positioned relative to and integral with the primary fins, thereby providing an increased heat transfer surface area.

Abstract: A coil on tube heat exchanger is provided that uses multiple parallel helical coil tubes to limit liquid pressure losses while providing similar performance and production times to previous coil and tube designs. Two or more coil tubes are wrapped together around a center tube in a helical fashion, permitting the heat exchanger to be used in a counter-flow, or contra-flow, implementation. Use of the heat exchanger includes flowing a first liquid, such as waste water, through the center tube and flowing a second liquid through the plurality of channels. Embodiments of the present invention provide reduced pressure loss, higher performance and are generally faster to manufacture than prior heat exchangers.

Abstract: A heat exchanger usable with a ventilator, the heat exchanger having an improved structure so that air passing through the heat exchanger may be prevented from leaking. The heat exchanger of the general inventive concept includes a heat-exchanging element having a plurality of liners stacked in a uniformly spaced state and a plurality of spacers disposed between the liners to define air passages, and corner guides respectively coupled to corners of the heat-exchanging element. Each of the corner guides includes a guide channel forming a space to receive the corner of the heat-exchanging element so that the corner guides securely come into close contact with the heat-exchanging element, and to minimize a loosening of the corner guide due to an adhesive applied between the heat-exchanging element and the corner guide.

Abstract: A structure for enhancing a heat exchange rate of an electric radiator is especially used in the electric radiator which applies a mineral oil to transmit the heat, such that a higher heat exchange rate can be achieved at a circulation part of related oil leaf. A relative distance between inner pipe walls of the oil loop is shortened, and a ratio of a long side to a short side of the loop is set to be greater than 6:1, which enables a flowing heat-transmission oil to easily break through a threshold Reynolds number to form a turbulent flow. On the other hand, heat-carrying particles of small specific heat are mixed into the oil body to improve the effect of heat transmission.

Abstract: A heat exchanger includes two header tanks and a plurality of heat exchange tubes. The header tanks each include an outside plate, an inside plate, and an intermediate plate. The outside plate has an outwardly bulging portion(s). The inside plate has a plurality of tube insertion holes. The intermediate plate has communication holes for allowing communication of the tube insertion holes with the outwardly bulging portion of the header tank. A pair of inclined portions inclined in a fanning-out fashion toward the inside plate are formed at inside-plate-side edge portions of opposite wall surfaces of each communication hole which extend in the hole-length direction. Projecting portions of the inside plate are formed by bending, toward the intermediate plate, portions of the inside plate located at opposite edges of each tube insertion hole which extend in the hole-length direction. The projecting portions are closely brazed to the corresponding inclined portions.

Abstract: A heat sink includes a heat-conductive base comprising a top surface; and a plurality of combined fins extending up from the top surface of the heat-conductive base, every two adjacent fins being spaced from each other with a passage formed therebetween, and the passage having an air inlet at one side of the heat sink, and an air outlet at an opposite side of the heat sink, wherein a top surface of each of the fins slopes down from the middle portion to the air inlet in a streamlined fashion, and from the middle portion toward the air outlet there is steeply sloping portion leading to a gently sloping portion terminating at a steeply sloping end surface of each of the fins. Resistance of the airflow is minimized, and speed of the heat dissipation is enhanced. Therefore, this aerodynamic design allows better airflow through the heat sink.

Abstract: The invention relates to an air-conditioning system (1), especially an automotive air-conditioning system, which comprises an air conduction housing (1) and components disposed therein, such as at least one heater (H; h) and one insert (E; F) for supplying and/or mixing the air. Said insert (E; F) and/or the air conduction housing (1) comprises elements, especially flaps, which can be interlinked either directly or indirectly and can be regulated together, thereby converting a multi-zone air-conditioning system into an air-conditioning system with fewer zones.

Abstract: A heat control apparatus for a circuit includes: a heat detecting unit which acquires the heat generation condition of a semiconductor integrated circuit from an inspection image obtained by capturing an image of the semiconductor integrated circuit by an image capturing sensor; and a cooling control unit which controls a cooling means for cooling the semiconductor integrated circuit in accordance with the acquired heat generation condition.

Abstract: A wellhead has, instead of a conventional Christmas tree, a spool tree (34) in which a tubing hanger (54) is landed at a predetermined angular orientation. As the tubing string can be pulled without disturbing the tree, many advantages follow, including access to the production casing hanger (21) for monitoring production casing annulus pressure, and the introduction of larger tools into the well hole without breaching the integrity of the well.

Abstract: The present invention relates to the generation of substantially pollution free energy by utilizing hydrocarbons to create electrical energy, while reinjecting exhaust fumes or other byproducts into a subterranean formation. The present invention further relates to managing and supplying this electrical energy to at least one of a variety of subprocesses for producing a fuel product, such as hydrogen or ethanol. Alternatively, electrical power can be generated from a non-hydrocarbon source such as thermal, solar, wind or other power source to produce electrical energy, which in turn may be used to produce fuel products or other forms of usable energy. Thus, remote, low reserve oil and gas fields may be exploited and produced without requiring the construction of expensive gas transmission lines.

Abstract: A system for heating a hydrocarbon containing formation is described. A conduit may be located in an opening in the formation. The conduit includes ferromagnetic material. An electrical conductor is positioned inside the conduit, and is electrically coupled to the conduit at or near an end portion of the conduit so that the electrical conductor and the conduit are electrically coupled in series. Electrical current flows in the electrical conductor in a substantially opposite direction to electrical current flow in the conduit during application of electrical current to the system. The flow of electrons is substantially confined to the inside of the conduit by the electromagnetic field generated from electrical current flow in the electrical conductor so that the outside surface of the conduit is at or near substantially zero potential at 25° C. The conduit may generate heat and heat the formation during application of electrical current.

Abstract: A method for restraining tubular members during well servicing. A first step involves monitoring a velocity of tubular members as they are withdrawn from a well. A second step involves activating a tubing restrainer when the velocity of the tubular members exceeds a predetermined threshold.

Abstract: An in situ reservoir recovery process consisting of a horizontal injection well and a horizontal production well to extract bitumen or heavy oil from a reservoir. The process consists of a first phase operated at high-pressure in which steam, hydrocarbon solvent and non-condensable gases are injected into the reservoir and a second phase in which the injected fluids are transitioned to a high content of solvent and non-condensable gas and a reduced amount of steam to maintain a warm zone in the neighbourhood of the injection and production wells. The steam injection is sufficient to promote vapor transport of the solvent into the vapor depletion chamber and maintain the process at elevated temperatures in order to maintain low fluid viscosities in the production wellbore and to achieve preferred phase behaviour of the solvent hydrocarbon and the heavy oil or bitumen.

Abstract: A method for controlling commingling of flows from multiple zones. The method includes physically containing flows from different zones to individual concentric flow channels in a nested tubular arrangement and selectively commingling two or more of the flows by setting at least one valve associated with each flow channel to a closed position or one of an infinite number of flow capable positions.

Abstract: Disclosed is a method and material for forming a fluid barrier in the material surrounding a wellbore. The method involves temporarily opening a fracture extending from the wellbore and then depositing particulates in the fracture which will swell when exposed to the fluid. The particles are deposited in the fracture without causing appreciable swelling thereof and then, after the fracture closes, the particles are allowed to swell when contacted with the fluid to form a fluid barrier.

Abstract: Apparatus for use above and below a restriction in a well bore and a method of operation is described. The apparatus comprises an upper element, such as a wiper, operable in the well bore above the restriction and a lower element, which may be a lower wiper, operable in the well bore below the restriction. A drop ball sized to pass through the restriction is released from the upper element and thereby passes through the restriction to operate the lower element. In one embodiment, the apparatus is incorporated into a running tool, which may be used to hang liners by dimple forming.

Abstract: Methods are provided that include a method of reducing fluid loss in a subterranean formation comprising placing a lost circulation composition comprising a base fluid and a swellable elastomer in at least a portion of a subterranean formation comprising a lost circulation zone; allowing the swellable elastomer to at least partially swell upon contact with a fluid; and allowing the lost circulation composition to at least partially reduce the loss of fluid to the subterranean formation. Additional methods are also provided.

Abstract: A method for improving bonding and sealing in a well, comprising providing a wellbore, providing a pipe, coating an outside surface of the pipe with an adhesive thermoplastic resin, running the coated pipe into the wellbore, and causing the temperature of said wellbore to increase to a temperature greater than a melting temperature of said adhesive thermoplastic resin.

Abstract: Diameter based tracking for a window milling system. A window cutting system includes a cutting assembly with multiple cutting faces for cutting the window; and a diverter for guiding displacement of the cutting assembly relative to the window, the diverter including multiple separate guide paths for the respective multiple cutting faces. A method of cutting a window includes the steps of: positioning a diverter in a tubular string, the diverter including multiple separate guide paths for respective multiple cutting faces of a cutting assembly; and then contacting the guide paths with the cutting faces to thereby form the window. Another method of cutting a window includes the step of: positioning a diverter in the tubular string, the diverter including multiple separate guide paths for respective multiple cutting faces of a cutting assembly, with each of the guide paths providing a separate wear surface for the respective cutting face.

Abstract: A method for removing a sealing plug from a casing or a wellbore according to which a sealing plug is adapted to expand into engagement with the casing or the wellbore. A wireless signal is sent to the plug to cause the plug to lose its structural integrity and fall to the bottom of the wellbore.

Abstract: Systems, methods, and heaters for treating a subsurface formation are described herein. At least one system for electrically insulating an overburden portion of a heater wellbore is described. The system may include a heater wellbore located in a subsurface formation and an electrically insulating casing located in the overburden portion of the heater wellbore. The casing may include at least one non-ferromagnetic material such that ferromagnetic effects are inhibited in the casing.

Abstract: The present invention relates generally to a device, system and method for generating steam downhole. More particularly, the present invention relates to an electrical steam generation system that enables efficient production of downhole steam without the heat and pressure losses realized by surface steam generation equipment.

Abstract: A process for disrupting filter cake in an underground formation, which process comprises: (i) incorporating into a treatment fluid a solid polymer capable of being converted by hydrolysis into one or more organic acids; (ii) introducing the treatment fluid into the underground formation; and (iii) allowing the solid polymer to hydrolyse in the presence of water to produce organic acid such that acid soluble material within the filter cake or adjacent formation is dissolved.

Abstract: A tool is employed with a subsea wellhead assembly for preventing the collapse of a wear bushing located in a drill-through tubular member due to external test forces being applied to it. The tool has a connector that connects to the drill-through tubular member. A stem extends downward from the connector and has a reacting member at its lower end. The reacting member engages an inner diameter of the wear bushing to resist inwardly directed forces due to fluid pressure on the exterior of the wear bushing. The tool can be incorporated with a running tool or with a blowout preventer isolation test tool.

Abstract: A flow diverter tool assembly is employed for flushing debris from a portion of the bore of a subsea production tree. The flow diverter tool assembly has a housing having a passageway there-through and a seal disposed on an exterior surface of the housing. The seal contacts the inner wall surface of the bore of the production tree, dividing a lower portion of the bore below the seal from an upper portion of the bore above the seal. One or more outlets from the passageway through the exterior surface are disposed along the housing below the seal. A bypass device such as a slip-joint is disposed above the seal to facilitate removal of the flow diverter tool assembly from the bore of the production tree after its use.

Abstract: A buoyancy element (200) is disclosed which comprises a moulded body of plastics-composite material incorporating reinforcement (202) comprising at least one elongate flexible member or filament, embedded in the body and adapted to retain fragments of the buoyancy module together following structural failure of the module.

Abstract: A method and apparatus for installing casing hangers in a wellbore utilizing an externally activated gripping system to temporarily bind wearbushings secured to casing and tubing hangers in order to lock-down such hangers during various wellbore drilling activities, thereby minimizing the size of landing shoulders and eliminating additional lock down equipment and simplifying running procedures.

Abstract: Methods relate to tubulars that may be part of a tubular string for isolating one or more zones within a wellbore. In one embodiment, the tubular string includes a first expandable zone isolation unit disposed on a first side of a zone to be isolated, a second expandable zone isolation unit disposed on a second side of the zone to be isolated, and a perforated tubular disposed in fluid communication with a producing zone. The tubular string may be expanded using an expansion assembly having a first expander for expanding the first and second expandable zone isolation units and a second expander for expanding the at least one perforated tubular. Tags or markers along the tubular string may indicate locations where expansion is desired such that connections or connectors between joints are not expanded.

Abstract: A continuous feed injection unit used for example for injection and removal of continuous well string from wells operates in a dual speed configuration. The unit comprises a first hydraulic motor, a second hydraulic motor, cooperating continuous well string gripping chains connected to be driven by the first and second hydraulic motors, a hydraulic power supply connected to provide pressurized fluid to the first and second hydraulic motors and a control system for the hydraulic power supply. The control system for the hydraulic power supply has a motor speed control valve with at least a first and second operating configuration, the first operating configuration providing power fluid to the first and second hydraulic motors in parallel and the second operating configuration providing power fluid to the first and second hydraulic motors in series. The hydraulic power supply may be a conventional power tong hydraulic supply.

Abstract: Disclosed herein is a downhole tool actuation arrangement. The arrangement includes a housing having a chamber, at least one piston in operable communication with the chamber and at least one electrode exposed to the chamber. The electrodes are receptive to a power source. Further disclosed is a method for actuating a downhole tool. The method includes discharging a voltage source through at least one electrode to cause a pressure wave in a fluid surrounding the at least one electrode and moving at least one piston in response to the pressure wave.

Abstract: An isolation tool for use in a pipe comprises a seal unit, the seal unit being mounted to a launching assembly. The seal unit is adapted for location in a section of pipe, the seal unit adapted to be inserted into the pipe via a single opening in the pipe wall. The seal unit comprises seal elements for engaging the pipe wall to isolate a section of pipe. The seal elements are initially retained in a retracted configuration. Hydraulic pressure is applied to a cylinder, a piston located in the cylinder being translated into the seal unit, causing compression of the seal elements.

Abstract: A system for a firefighting vehicle including a single compressor, driven by the engine of the firefighting vehicle, which generates a compressed fluid supply for operation of both the compressed air foam system and air brakes of the firefighting vehicle. The system can include a fluid storage tank that receives compressed fluid generated by the compressor. The storage tank can be in fluid communication with a dryer and a foaming system. The dryer dries a portion of the compressed fluid and supplies the dry fluid to one or more brake system tanks, which further provide a fluid supply to one or more air brakes of the vehicle to provide a braking force to stop the vehicle. An optionally undried portion of the fluid in the fluid storage tank can be in communication with a conduit which is further in communication with a foam supply and a liquid supply which mix with the compressed fluid to create a compressed fluid foam firefighting material.

Abstract: An embodiment of the invention includes an apparatus and a method for fire suppression including the utilization of an explosive composition layered between a fire suppressant panel such as, for example, a powder panel and another fixed structure such as, for example, a fuel tank dry bay wall. Upon impact or other means of detonation the explosive composition effects the rupture of a large number of frangible cells in the panel, dispersing the fire suppressant substance, thereby extinguishing or preventing fire.

Abstract: Fire suppression systems and methods are described. One described system includes a housing configured to house a container of a fire suppression material, a delivery block in fluid communication with the container, and a nozzle in fluid communication with the delivery block and configured to disperse the fire suppression material from the delivery block. The described system can also include a power supply; a thermal indicator coupled to the power supply and operable to: detect the presence of a fire, generate a first signal indicating the presence of the fire, and transmit the first signal; and an actuator coupled to the power supply, the actuator in communication with the thermal indicator and configured to cause the fire suppression material to be transferred from the container to the delivery block in response to receipt of the first signal.

Abstract: A potato harvester has a lifting device for lifting soil ridges, wherein the lifting device has a digging device with digging shares. At least one support element for supporting the lifting device on the ground is provided. The at least one support element has at least two wheels that are movable along opposite sides of an intermediately positioned soil ridge, respectively. The wheels form a guide unit that supports at least one part of a weight of the at least one digging device, wherein the guide unit controls the digging shares and acts on a soil ridge to be lifted as an intake aid.

Abstract: An electrical power tool includes a housing, an electrical motor, a motion conversion mechanism, a weight-supporting member, a counterweight, and a first supporting member and a second supporting member. The motion conversion mechanism is configured to convert a rotary motion of the electrical motor into a reciprocation motion. The weight-supporting member extends in a direction perpendicular to directions of the reciprocation motion and is capable of being elastically deformed in the directions of the reciprocation motion. The first supporting member and the second supporting member each provided on the housing for supporting the weight-supporting member to the housing. The weight-supporting member has a first connecting part and a second connecting part supported by the first supporting member and the second supporting member, respectively; and an elastically deforming part.

Abstract: A hand-held machine tool (2) has a main housing (6) at which vibrations are generated during operation, a handle housing (12) that is held at the main housing (6) with the intermediary of a vibration-reducing device (14), and an adjusting arrangement (22) which has an adjusting device on the main housing side which can be adjusted between at least two positions and an adjusting device on the handle housing side which can be adjusted between at least two positions and which is mechanically connected to the adjusting device (26) on the main housing side by an adjusting connection (26). The adjusting connection (26) has a flexible vibration-reducing portion (36) between the handle housing (12) and the main housing (6).

Abstract: A folding assembly type cable protection and guide device is provided in which a cable is accommodated into a cable accommodating space. The cable protection and guide device can be easily manufactured by extrusion molding without requiring different metal molds to accommodate different size cables. Assembly is simplified. Dimensional stability of the cable accommodating space is ensured during both linear and flexion movement which provides smooth linear and flexion movement of the device. The long body cable accommodating space is a rectangularly shaped space surrounded by a synthetic resin film tape. The synthetic resin film tape is assembled through a plurality of folding V grooves which extend along a longitudinal direction of the tape to allow for repeated linear and flexion movement.

Abstract: The present invention relates to an installation of a wiring device configured to receive a cover plate which snaps on to a wiring device such as a switch or receptacle. With this invention, openings for threaded fasteners in the face of the cover plate are eliminated. In an embodiment, the cover plate has an opening sized to accommodate a wiring device and supports, on opposing side walls of the opening, at least one protrusion. The protrusions on the cover plate are located to detachably engage corresponding protrusions on the wiring device as the cover plate is pressed onto the wiring device.

Abstract: The present invention offers a sealing-end structure for a superconducting cable. The structure performs, through a bushing, the outputting and inputting of electric power between a normal-temperature side and a cryogenic-temperature side, where an end portion of a superconducting cable is placed. The sealing-end structure is provided with a coolant vessel at the cryogenic-temperature side for cooling the bushing. The coolant vessel has a liquid-coolant region filled with a liquid coolant and a gaseous-coolant region filled with a gaseous coolant. The coolant vessel is provided with a contraction-absorbing portion for absorbing the contraction of the coolant vessel when it thermally contracts by the effect of the coolant. The sealing-end structure for a superconducting cable suppresses the deterioration of the sealing performance of sealing members placed at the boundary between the normal-temperature side and the cryogenic-temperature side over a long period of use.