1623 results about "Convection flow" patented technology

A module includes a cold plate. Solid-state heat sources are thermally mounted on the cold plate in a chamber defined by the cold plate and a lid. Cooling of the heat sources is enhanced by a dielectric liquid within the chamber. The liquid has a boiling point slightly below the temperatures of “hot” spots, to form small bubbles during operation, which enhance convection flow. The liquid may be a mixture of fluorocarbons of different boiling points. The liquid may contain diamond particles.

A system and method for a thermal convection flow detection in a cerebrospinal fluid shunt that uses very little power for extended operation and for providing flow data to a remotely-located device.

A thermal insulating packer fluid contains water and/or brine, a crosslinkable viscosifying polymer, a crosslinking agent and an optional set retarder. The composition is capable of inhibiting unwanted heat loss from production tubing or uncontrolled heat transfer to outer annuli. The viscosity of the composition is such as to reduce the convection flow velocity within the annulus.

A sensor capable of sensing the flow of fluids is placed in the gastrointestinal tract. The sensor may be, for example, an ultrasonic flow sensor, an optical flow sensor, or a thermal convection flow sensor. A system for monitoring fluid flow in the gastrointestinal tract may include monitor configured for placement in the gastrointestinal tract that includes such a sensor. The monitor measures the flow of fluid in the gastrointestinal tract based on the output of the senor. The monitor may take the form of a capsule with a means or mechanism for attachment to a mucosal lining of the gastrointestinal tract. In exemplary embodiments, the sensor is placed in the esophagus, senses the flow of fluid from the stomach into the esophagus, and is used to diagnose gastroesophageal reflux disease (GERD).

A device 30 and associated process are described for hygienizing and warming beehives aiming at the improvement of the production of organic bee produce, said device comprising providing a bee box 1 containing frames 5 for honey production and bee housing, one frame 5a being left for inserting a ceramic block 11 provided with at least one row containing from 8 to 32 channels 11a and where the lower and upper ends of these channels 11a are opened towards the interior of the beehive, channels 11a being thermally insulated from the remaining of frame 5a with the aid of wings 15a, 15b and traversed by conducting filaments 14a, 14b connected to an energy source 20 through wire 7, whereby whenever electrical current traverses said filaments 14a, 14b the temperature inside said channels attains from 300-350° C. with the consequent heating of circulating air in the beehive by convection, the warmed air from the upper ends of said channels creating a negative pressure in the lower ends of same, whereby the outer colder air is sucked towards the interior of said channels, alternatively by using a fan or air pump, with the consequent extermination of the microorganisms present in the air as they cross warmed channels 11a.

An apparatus and process are provided for cracking hydrocarbonaceous feed, wherein the temperature of heated effluent directed to a vapor/liquid separator, e.g., flash drum, whose overhead is subsequently cracked, can be controlled within a range sufficient so the heated effluent is partially liquid, say, from about 260 to about 540° C. (500 to 1000° F.). This permits processing of a variety of feeds containing resid with greatly differing volatilities, e.g., atmospheric resid and crude at higher temperature and dirty liquid condensates, at lower temperatures. The temperature can be lowered as needed by: i) providing one or more additional downstream feed inlets to a convection section, ii) increasing the ratio of water/steam mixture added to the hydrocarbonaceous feed, iii) using a high pressure boiler feed water economizer to remove heat, iv) heating high pressure steam to remove heat, v) bypassing an intermediate portion of the convection section used, e.g., preheat rows of tube banks, and/or vi) reducing excess oxygen content of the flue gas providing convection heat.

A thermal insulating packer fluid contains an organic solvent of low thermal conductivity and a gelling agent which is hydratable in the solvent. The composition is capable of inhibiting unwanted heat loss from production tubing or uncontrolled heat transfer to outer annuli. The viscosity of the composition is sufficient to reduce the convection flow velocity within the annulus.

A step of preparing data of (1) material properties of a first part and so on and data of (2) an amount of solar radiation passing through the translucent member to reach a measuring device having a shape imitating a human body part, an amount of solar radiation to the structure, an amount of convection heat transfer in the structure, an amount of radiation heat transfer in the structure, humidity in the structure and/or a thermo-regulating function of the measuring device, and calculating at least one of the amount of heat loss from the surface of the measuring device, the temperature of the measuring device and/or the wettedness at the surface of the measuring device based on at least one in each of data (1) and (2), and a step (b) of calculating a thermal comfort index of the measuring device by using a result of the above calculation, are presented, whereby the thermal comfort of a structure is evaluated without using a laboratory equipment.

The invention discloses a method for preparing semi-solid state slurry through intensive cooling stirring. The method comprises the following steps: placing overheated alloy melt in a crucible or a casting ladle, descending a rotary stirring shaft internally introduced with a circular cooling medium in the alloy melt through a lifting device, driving the convection heat exchange of the alloy melt through stirring, continuously cooling the rotary stirring shaft through the circular cooling medium, stirring for a fixed period of time or cooling the melt to a set temperature, raising the rotary stirring shaft to prepare the semi-solid state slurry and form an ingot casting; closing the casting ladle containing the semi-solid state slurry to formation equipment and pouring the semi-solid state slurry into a cavity or material chamber of the formation equipment to take the shape; and taking out a formed part and moving the crucible or the casting ladle back to an original position and filling the overheated alloy melt to perform the next semi-solid state slurry preparation. The invention further provides a device for realizing the above method. Through the adoption of the method and device provided by the invention, large volume of semi-solid state slurry can be prepared once, and the semi-solid state slurry can be continuously produced in batch, and then the rheolytic formed part can be prepared through the combination of pressure casting, rolling, die-forging and other conventional formation equipment.

Apparatus for abstracting heat comprises a container charged with a first liquid and with small auxiliary containers free to circulate in the first liquid. Each of the small auxiliary containers is charged with a second liquid. The first and second liquids each have a selected temperature of transformation that facilitates use of the apparatus to heat or cool a substance contacted by the apparatus.

A solid adsorbent regenerating device and an adsorption device applying the regenerating device are disclosed. The regenerating device includes a regenerating heater and an absorbent bed. The regenerating device is configured in a manner that heating by the regenerating heater allows gas in the regenerating device to circularly flow between the regenerating heater and the adsorbent bed, and heat provided by the regenerating heater is transferred through the circular airflow to the adsorbent bed so that an adsorbent is heated and regenerated. According to one embodiment, the inside of a furnace body of the regenerating device is divided into two parts, top ends of the two parts are communicated with each other, bottoms of the two parts are communicated with each other, and the regenerating heater is in one of the two parts. The adsorption device applying the regenerating device is also disclosed. Circular heating in a natural convection manner is utilized to regenerate the solid adsorbent. The regenerating device and the adsorption device have advantages of low consumption of inert gas, no or extremely low waste emission, a high heat efficiency, simple equipment, a low cost, and the like.

The invention discloses a gas heat carrier low-temperature pyrolyzing furnace and a gas heat carrier low-temperature pyrolyzing method. High-moisture materials are subjected to drying preprocessing in the pyrolyzing furnace by means of a gas heat carrier convection drying method, and hot gas is uniformly distributed in a drying section under the action of a gas distribution umbrella. Dried materials enter a dry distillation area where gas heat carriers transversely penetrate through materials, and exchange heat with the gas heat carriers prior to heating to enable low-temperature pyrolytic reaction. Gas in the furnace is formed by mixing lower coke quenching coal gas with hot flue gas in a combustion area, enters a flame path, then flows across a material layer from a flame path lattice wall to a gas collection lattice wall to enter a gas collection chamber, and is finally led out of the furnace through a gas collection passage formed by double-faced gas collection lattice walls and gas collection chamber gas distribution bricks. Pyrolyzed product hot semi-cokes enter a combined dry quenching device to be cooled and pass through a coal gas quenching area and a water-cooling heat exchange area sequentially. A guide chute on the lower portion of the furnace is connected with a discharger and a conveyor, and semi-cokes are uniformly led out and conveyed to a semi-coke storage yard under the action of the discharger and the conveyor.

The invention relates to the technical field of dish washing machines, and provides a drying machine and a dish washing machine. The drying machine comprises an inner container, the side wall of the inner container is connected with an air inlet mechanism and an exhaust mechanism, the air inlet mechanism comprises an air inlet pipe, the side wall of the inner container is provided with an air inlet hole and an exhaust hole, the air inlet hole and the exhaust hole are distributed at different heights, and the air inlet pipe is connected with the air inlet hole; the exhaust mechanism comprises an exhaust motor and an exhaust pipe, and the two ends of the exhaust pipe are connected with the exhaust motor and the exhaust hole respectively. After tableware in the dish washing machine is rinsed, outside air enters the inner container through the air inlet hole, the exhaust motor pumps the air in the inner container through the exhaust hole, and the air is exhausted outside through the exhaust pipe; the air inlet hole and the exhaust hole are distributed at different heights, so that air convection is formed in the inner container, the drying effect is greatly improved, energy consumption is lowered, air convection is smooth, noise is low, the structure is simple, and potential safety hazards are avoided.

The inventive paint dryer, comprises a cabin (12) for housing objects (15) that are to be painted and dried. At least one fresh air supply (8) is provided in order to introduce fresh air into an air circulation system pertaining to the dryer (1) resulting in the circulation of said air. At least one pure gas supply line (7) is provided, wherein thermally cleaned and heated waste air is introduced as a pure gas, thereby maintaining the waste gas circulated in the circulation system at the desired temperature in such a way that objects (15) arranged in the cabin (12) can be dried by radiation and/or convection. The pure gas supply line (7) is surrounded by the fresh air supply line (8) at least along a longitudinal pipe segment and at least in said longitudinal pipe section the pure gas supply pipe (7) is constructed in such a way as to allow for the transmission of heat to fresh air flowing into the fresh air supply (8). The invention also relates to a paint dryer unit comprising several paint dryer modules which are positioned one after the other and configured as paint dryers according to the invention.

Disclosed herein are storage type water heaters having means for improved mixing of cold water supply with water stored in the water tank of a water heater, means for limiting surges of water into and out of a water tank, and means for disrupting formation and propagation of convection currents and water streamers in a water tank.

Steam generation apparatus and methods are presented that are dedicated to oxygen-enriched air combustion of a fuel, wherein the oxygen concentration of the oxygen-enriched air may range from just above 21 percent to 100 percent. One apparatus comprises an oxygen-enriched air preheater through which oxygen-enriched air flows and exchanges heat indirectly with flue gas, creating a preheated oxygen-enriched air stream. The apparatus further comprises a boiler having a radiant section and a convection section, and other heat transfer units adapted to handle reduced flue gas flow rate and higher temperature flue gases than comparable air/fuel combustion boilers, thus allowing a smaller heat transfer surface area, a more compact design and a higher efficiency.

The invention discloses a system for cooling a high-carbon steel wire rod after rolling. The device comprises a Stelmor controlled cooling device and a gas fog pre-heating device, wherein the gas fog pre-heating device is arranged on a roller path between a laying head and the Stelmor controlled cooling device. The invention further discloses a method for cooling a high-carbon steel wire rod after rolling. The method comprises the following steps of: controlling the temperature difference among different areas of a rod body to be below 100 DEG C by using the high thermal conductivity of convection vapor during gas fog pre-cooling; and entering the Stelmor controlled cooling device at the temperature of 650-750 DEG C for performing Stelmor cooling. Compared with a wire rod subjected to salt treatment, the finally obtained wire rod in the invention has the advantages that: the mechanical performance and microscopic structure are very close, the tensile strength of cold drawing can be met, and environmental pollution is greatly lowered.

The invention relates to a novel ventilating pipeline wind power generation system and a generator. With the help of air convection and upward draft of wind in a ventilating pipeline, fresh air naturally flows into a fresh air collecting channel chamber from a fresh air inlet of a second floor equipment room on the ground, enters into an air-supplying stand pipe 3 in a basement by virtue of an air-supplying pipeline 2 in an empty space of the basement, and then enters rooms on each floor by virtue of a main vertical air-supplying pipeline 41 on an outdoor south warming wall and lateral air-supplying branched pipelines 42 and 42' on each floor. An electric wind driven generator is used for solving the problem that the natural wind power in an air flue can not achieve the wind power level for delivering and exhausting air and starting the wind driven generator to generate, thereby providing a system which is free from wind field influence and completely utilizes a novel ventilating pipeline system for construction and a wind generating set system arranged in a pipeline of the novel ventilating pipeline system and composed of multiple minitype wind generating sets to generate electricity while performing ventilating air conditioning, so as to greatly lower the costs of ventilating air conditioning and wind power generation.

The invention discloses a micro heat flow accelerometer, namely a micro sensor, and making method, composed of sealed monocrystal silicon wafer, heater wire, temperature sensor, inner and outer cavities, detecting circuit and so on. It uses gas as sensitive medium and using the theory that gas's natural convection changes under the action of acceleration to measure the acceleration in the direction of one or two coordinate axes. The heater wire and temperature sensor are suspended and fixed on the silicon cavity. The heat field produced by the heater wire changes when accelerated, the detecting circuit detects the temperature change of the temperature sensor so as to measure the acceleration value. It has no detecting mass block, elastic or strain beam, etc, so having reliable performance, simple and ripe technique, low making cost and so on, and it is specially applied to intelligent cannonball, car, toy, etc.