33results about How to "Efficiently transfer heat" patented technology

An electrically operated scented wax holder that forms a receptacle for receiving unmelted blocks of wax which are heated to the melting point and thereafter maintained at a safe temperature by a temperature-regulated electrical heating element. The wax receptacle is removable mounted on a base section that houses a positive temperature coefficient (PTC) thermistor which has a transition temperature substantially higher than the melting point of the wax to insure that the wax is rapidly melted, but substantially below the temperature that would constitute a danger to a human who might touch the exterior surface of the warmer, or constitute a fire hazard. The heating element is preferably placed in thermal contact with a contact pad having high thermal conductivity that is in turn placed closely adjacent to the wax receptacle, thereby efficiently transferring heat from the electrically operated temperature regulated heating element to the wax in the receptacle. A switch is positioned to de-energize the heating element whenever the wax receptacle is removed from the base section, and a visible pilot light is illuminated whenever the heating element is energized.

The overall efficiency of a regenerative bed reverse flow reactor system is increased where the location of the exothermic reaction used for regeneration is suitably controlled. The present invention provides a method and apparatus for controlling the combustion to improve the thermal efficiency of bed regeneration in a cyclic reaction/regeneration processes. The process for thermal regeneration of a regenerative reactor bed entails

• • (a) supplying the first reactant through a first channel means in a first regenerative bed and supplying at least a second reactant through a second channel means in the first regenerative bed,
  • (b) combining said first and second reactants by a gas mixing means situated at an exit of the first regenerative bed and reacting the combined gas to produce a heated reaction product,
  • (c) passing the heated reaction product through a second regenerative bed thereby transferring heat from the reaction product to the second regenerative bed.

A liquid crystal display device includes a sealed housing part, a liquid crystal display part disposed at the front face of the housing part, a light source part housed in the housing part to generate the light to be displayed on the liquid crystal display part, an electric power supply part housed in the housing part to perform electric power supply, a control part housed in the housing part to perform control, and a heat exchange part disposed at the rear face of the housing part to cool the heat generated in the housing part. The heat exchange part includes an air stirring part for stirring the air in the housing part, a forced air cooling part covered with a duct in which the air stirring part is installed and constructed from a plate extending into the housing part, and a natural air cooling part constructed from a plate extending to the outside of the housing part. The forced air cooling part and the natural air cooling part are integrated with a rear face plate of the housing part.

A thermal management system includes an air duct assembly comprising a supply air duct having an air inlet opening, a return air duct having an air exit opening and a plurality of distribution air ducts configured to be in fluid communication with the air inlet opening of the supply air duct and with the air exit opening of the return air duct. A fan is disposed within the air duct assembly to direct air from the air inlet opening of the supply air duct through the supply air duct and out the air exit opening of the return air duct. The fan and supply duct are disposed to direct air over a first surface of a heat sink. A second opposing surface of the heat sink is disposed over and configured to be in thermal contact with a plurality of active circuits disposed on a first surface of a radio frequency (RF) multi-layer printing wiring board (PWB).

This invention relates to a fuel cell system comprising a fuel cell stack and a heat exchanger wrapped around the stack. The fuel cell stack comprises a fuel cell that operates at high elevated temperatures, such as a solid oxide fuel cell; the fuel cell can have a tubular configuration and comprise a pair of concentrically arranged electrode layers sandwiching a concentrically arranged electrolyte layer. The heat exchanger wraps around the fuel cell stack and comprises a flexible, thermally conductive first layer and an overlapping flexible, thermally conductive second layer spaced from the first layer. The first and second layers define adjacent annular oxidant supply and oxidant exhaust channels when wrapped around the stack. The exhaust channel is communicative with heated exhaust oxidant flowing from the stack, and the oxidant supply channel is communicative with supply oxidant that flows to the stack and is heated by heated exhaust oxidant in the adjacent oxidant exhaust channel and from heat radiating from the stack.

An induction plasma torch comprises a tubular torch body, a gas distributor head located at the proximal end of the torch body for supplying at least one gaseous substance into the chamber within the torch body, a higher frequency power supply connected to a first induction coil mounted coaxial to the tubular torch body, a lower frequency solid state power supply connected to a plurality of second induction coils mounted coaxial to the tubular torch body between the first induction coil and the distal end of this torch body. The first induction coil provides the inductive energy necessary to ignite the gaseous substance to form a plasma. The second induction coils provide the working energy necessary to operate the plasma torch. The second induction coils can be connected to the solid state power supply in series and/or in parallel to match the impedance of this solid state power supply.

A quantum well thermoelectric module providing very high conversion of heat energy in to electrical energy. In prefered embodiments the module provides electric power for monitoring, measuring or detecting any of a variety of things (such as temperature, smoke, other pollution, flow, fluid level and vibration) and a transmitter for transmitting information measured or detected. In a preferred embodiment wireless monitor systems are utilized to monitor conditions at various locations aboard a ship and to wirelessly transmit information about those conditions to a central location. Preferably, a finned unit is provided to efficiently transfer heat from a module surface to the environment. A preferred quantum well choice is p type B₉C/B₄C and n-type Si/SiGe legs. Another preferred choice is n-doped Si/SiGe for the n-legs and p-doped Si/SiGe for the p-legs. At higher temperatures the preferred quantum well legs are alternating layers of silicon and silicon carbide for the n-legs and for the p-legs alternating layers of different stoichiometric forms of B-C.

A U-tube diffusion flame burner assembly having improved flame stabilization with no undesirable acoustic effects. The burners are axial units comprised of flame holders and combustors. The flame holders includes secondary air tubes to support the flow of secondary air that have helical walls forming helical passageways along at least a portion of its inner diameter to impart a swirl to the secondary air. The helical passageways impart a swirl to the secondary air exiting the passageways while simultaneously acting as a heat exchanger to heat primary air. The flame holders includes fuel tubes having first ends connected to a fuel supply and second flame ends. A plurality of radially oriented apertures are located at the second flame ends to distribute fuel in a radial direction. Primary air tube surrounds at least the flame ends of the fuel tubes and extend axially from first air supply ends to second flame ends. Air is diverted from air supply ends of the flame burners into primary air tubes through radial apertures located at the first air supply ends of the primary air tubes. Secondary air tubes surround the primary air tubes extending from first air supply ends to second ends opposite the air supply, the secondary air tubes having inner diameters larger than the outer diameters of the primary air tubes. The secondary air tubes extend for a preselected distance beyond the second flame ends of the primary air tubes and are coupled to axially-oriented conical-shaped reducers. Flame at high velocity exits the restricted end of the reducers.

A heat transfer film includes a heat transfer layer formed of a first constituent material containing C (carbon) for transferring heat in an in-plane direction thereof and a layer thickness direction thereof; and a strain relaxation layer formed of a second constituent material and laminated on the heat transfer layer for relaxing a strain in the heat transfer layer. The first constituent material includes a graphite, and the second constituent material includes an amorphous material.

A Peltier module comprising a plurality of thermoelectric semiconductor elements between substrates in connection with electrodes. It is manufactured by four steps, namely, an application step in which a resist onto the substrate, a hollow formation step in which the resist is deformed into a resist pattern having a lattice-like shape and a plurality of hollows, an electrode formation step in which the electrodes are formed in the hollows of the resist pattern, and a removal step in which the resist pattern is removed from the substrate, wherein the resist is made of an acrylic resist including acrylic polymer, multifunctional acrylate, and photosensitive agent. The electrodes are formed and arranged by use of the resist pattern having the hollows in such a way that an aspect ratio D/S, which is defined using an electrode thickness D and an inter-electrode space S, is set to 1.25 or more.

An optical semiconductor unit of the present invention has an LED device provided with an LED (Light Emitting Diode) and a socket to which the LED device is mounted, the LED device has a main body to which the LED is mounted, the main body has a first surface to which block-shaped electrode portions are connected.

There is provided an energy-saving vibration generating and cooling apparatus with a small volume in which convection is created inside and outside its cabinet and which can effectively transfer heat. It includes a motor 4, a magnetic vibrator 1 mounted onto a rotary shaft of the motor 4, and a piston 5 indicating magnetism disposed physically apart from the vibrator 1; and the piston 5 repeatedly approaches and leaves the vibrator 1 in association with rotations of the vibrator 1 such that a heat generating element is cooled by a synthetic jet 7 created by the movement of the piston 5.

The present invention is an enhanced tubular heat exchanger for a furnace <INS-S DATE="20010109" ID="INS-S-00001">with the heat tubes of the heat exchanger having two straight sections connected by a bend<INS-E ID="INS-S-00001">. The tubes of the heat exchanger include an enhanced portion which has a smaller cross-sectional area than the flue portion, in the form of an elliptically shaped tube. The enhanced portion further includes turbulators to promote the heat exchange from the heated flue gases. Circulation of air around the exterior of the tubes is also facilitated because the enhanced portion is disposed at a small angle relative to the flue portion. A plurality of tubes are disposed within the heat exchanger so that the circulation air first flows over the enhanced portions then over and around the generally cylindrical portions. This lowers the initial pressure drop in the circulation air flow and thereby facilitates the circulation of and heat transfer to the air being heated.

To provide an illuminating device-cum-air cleaning device that solves a heat problem and allows efficient operation of an air cleaning means.

Air inlets/outlets 3A and 3B are provided in a wall surface of a housing 10 to which an illumination light source 2 is attached. A fan 4 is provided in the housing 10 to generate a forced air flow inside and outside the housing 10 through the air inlets/outlets 3A and 3B and discharge heat from the illumination light source 2 by the forced air flow to the outside of the housing 10. In the middle of a flow path for the forced air flow a within the housing 10, a photocatalyst 50 facing the flow path and a UV light source 51 irradiating the photocatalyst 50 with light including ultraviolet rays are provided as air cleaning means 5.

A heat radiation structure for a portable micro projector that enables efficient radiation of heat generated therein. A projector module irradiates light of high intensity using a lamp to project an image to an external screen. A thermally conductive plate having a plate-like shape, the projector module being attached to one surface of the thermally conductive plate to transfer heat generated in the projector module. A heat radiation case to which the thermally conductive plate to which the projector module is attached is coupled therein to emit the heat transferred through the thermally conductive plate outside.

According to an embodiment of the present invention, a thermal management system for electronic components includes a plastic coldplate having a mounting surface for mounting one or more electronic components, one or more passageways configured to have a fluid flow therethrough disposed within the plastic coldplate, and a highly conductive material disposed within the plastic coldplate and thermally coupled to the mounting surface. The highly conductive material is operable to transfer heat from the mounting surface to the fluid flow.

A silicon quantum dot fluorescent lamp is made via providing a high voltage source between a cathode assembly and an anode assembly. The cathode assembly is made by providing a first substrate, coating a buffer layer on the first substrate, coating a catalytic layer on the buffer layer and providing a plurality of nanometer discharging elements on the catalytic layer. The anode assembly is made via providing a second substrate, coating a silicon quantum dot fluorescent film on the second substrate with and coating a metal film on the silicon quantum dot fluorescent film.

Disclosed herein are more energy efficient heaters for dispensing volatile air treatment chemicals. The heaters have a housing with a base and a cover, the base and cover together defining an enclosure with an internal generally ring-shaped cavity and an axial through bore. One of the base and cover has an essentially cylindrical extension that is integral therewith, extends towards the other of the base and cover, and forms a portion of the axial through bore. First and second electrical contacts are positioned in the cavity with portions overlapping against a heater. A metallic heat transfer sleeve formed separately from the base and cover is positioned radially outward and around the essentially cylindrical extension, and has a flange abutting one of the contacts. Also disclosed are dispensers that incorporate these heaters.

In a Stirling cooling apparatus, a refrigerant is circulated within a refrigerant circulation circuit in such a way that the refrigerant receives cold, as latent heat, from a Stirling chiller and then releases the cold, by absorbing heat of vaporization, as it vaporizes in an evaporator, thereby cooling the inside of a refrigerator chamber. As the refrigerant, carbon dioxide, a natural refrigerant, can be suitably used.

An axial air cooling system for scroll-type positive fluid displacement apparatus provides needed cooling. The system includes an axial fan and centrifugal pump and internal cooling air channels inside parts integrating main housing, base housing and motor housing with their corresponding shell parts by cooling fins. The cooling air channel also includes passages inside the orbiting scroll, shaft central hole and gaps inside stator slots and winding. Heat pipes are installed inside the fixed and orbiting scrolls to conduct heat from inside of the apparatus to the peripheral condenser portion of the heat pipes to be cooled by the cooling air.

An insert construction or formation is attachable to a basic lid construction for outfitting a hot beverage or liquid container assembly for enabling a user to enhance heat transfer from a relatively hot assembly-contained beverage or liquid prior to consumption. The insert construction or formation provides a damming structure located in adjacency to the primary liquid outlet of the basic lid construction for selectively transferring liquid intermediate a liquid-containing compartment and at least one beverage-cooling channel made part of the damming structure. Each beverage-cooling channel or formation directs liquid therethrough and transfers heat therefrom before the liquid exits the primary liquid outlet. The primary dam structure or insert construction thereby enables the user to redirect liquid movement via the basic lid construction for delaying liquid delivery via the primary beverage outlet and transferring heat therefrom prior to liquid consumption. Certain packaging methodology of the complex lid construction is further contemplated.

A cooling device including a heat-radiating device and a centrifugal pump provided in a closed circulation passage for circulating refrigerant. The centrifugal pump comes into contact with heat-generating electronic parts to absorb heat from the heat-generating electronic parts by the heat exchange of the refrigerant therein to radiate the heat via the heat-radiating device. A pump chamber of the centrifugal pump is defined by a combination of a plurality of casings, that is, an upper casing, a ring-shaped sealing member and a lower casing. A contacting surface that comes in a surface contact with the heat-generating electronic parts, and a recessed conical surface that faces an impeller are formed in the lower casing of the casings that comes into a direct contact with the heat-generating electronic parts. A plurality of heat-radiating pins protruding toward the impeller is provided in a center portion of the recessed conical surface.

In one embodiment of a data storage device, the inside of its housing 111 is divided into first and second spaces 1 and 2 by a chassis 110. The data storage device includes at least one optical pickup 104 that writes data on a storage medium and a heat radiating member 109 which is thermally coupled to the optical pickup 104 to transfer the heat generated by the optical pickup 104. The optical pickup 104 and the heat radiating member 109 are arranged in the first and second spaces 1 and 2, respectively.

Improved lighting units are disclosed comprising a casing (14, 114) and a heat sink (11, 110) mounted to the casing (14, 114), a light source (6, 106) mounted to a front side of a circuit board (8, 108), the circuit board (8, 108) including control circuitry for the light source (6, 106), the heat sink (10, 110) provided in thermal contact with a rear side of the circuit board (8, 108) and a lens arrangement (12) located at the front side of the circuit board (8, 108), the circuit board (8, 108) and the light source (6, 106) being located in the casing (14, 114) wherein the circuit board (8, 108) comprises a ceramic circuit board, the arrangement being such that heat generated in use by the light source (6, 106) and control circuitry is transferred by conduction through the circuit board (8, 108) to the rear side of the circuit board (8, 108) and into the heat sink (10, 110).

Provided is a liquid heating apparatus capable of heating fluid such as peroxosulfuric acid solution to high temperature in a short time. The heating apparatus includes: a flow channel member forming a flow channel 4 allowing liquid to flow and having flow channel thickness of 10 mm or smaller, the flow channel member composed of material transmitting near-infrared rays; and a near-infrared heaters 7, 8 placed over the outside of at least one of opposite flow channel surfaces of the flow channel and heating the liquid in the flow channel. The liquid flowing through the flow channel is instantaneously and evenly heated using near-infrared rays. It is preferable that spacers 6 be further provided within the flow channel 4 in order to limit the volume of the flow channel. Since not only the residence time in the heating apparatus can be shortened but the possible largest heat transfer area can be also maintained by decreasing the volume of the flow channel of the heating apparatus and by increasing the flow velocity in the heating apparatus, it is possible to increase the temperature of liquid to be heated to high temperature in a very short time even if the preset temperature of heat transfer surfaces is low.

A method and apparatus for measuring quench characteristics of a fluid. The apparatus includes a probe with an energy input device electrically connected to a display unit to monitor temperature, media flow characteristics and media heat transfer characteristics. The method includes continuously measuring thermal energy transfer in a quenching media by measuring the surrounding fluid's heat transfer relative to input probe energy.

An index device of a machine tool is driven by a motor. Gap space created between the outer periphery of the motor and the inner periphery of a casing for housing the motor is filled with a material that is higher in thermal conductivity than the air. With this configuration, heat to be generated during operation of the motor of the index device is efficiently transferrable to the motor housing casing.

A heat-removing device for a vehicle including: an interior part having a plate portion exposed to direct sunlight including a baseboard formed of a resin or a composite material containing a resin and a skin material which covers an outer surface of the baseboard; a heat conducting plate for collecting heat from the skin material, provided on an inner side of the skin material of the plate portion and inside of an inner surface of the baseboard in a direction of a thickness of the baseboard; and a heat pipe provided on an inner side of the inner surface of the baseboard and connected in heat-conductive relationship to the heat conducting plate, which transfers heat collected by the heat conducting plate to a heat releasing device.

A control apparatus for a vehicle cooling apparatus that includes: a PCU cooling unit for cooling a power control unit controlling an electric motor; a T/A cooling unit for cooling a drive-force transmitting apparatus including the electric motor; and a heat exchanger for transferring heat between the PCU cooling unit and the T/A cooling unit. The T/A cooling unit includes a first pump for circulating a refrigerant of the T/A cooling unit, while the PCU cooling unit includes a second pump for circulating a refrigerant of the PCU cooling unit. The control apparatus includes a controlling portion configured to cause the first pump to be driven when a temperature of the power control unit is higher than a threshold temperature value and a temperature of the refrigerant of the PCU cooling unit is higher than a temperature of the refrigerant of the T/A cooling unit.