742results about How to "High emissivity" patented technology

A pump liner is used to direct a laminar flow of purge gas across a workpiece to remove contaminants or species outgassed or otherwise produced by the workpiece during processing. The pump liner can take the form of a ring having a plurality of injection ports, such as slits of a variety of shapes and/or sizes, opposite a plurality of receiving ports in order to provide the laminar flow. The flow of purge gas is sufficient to carry a contaminant or outgassed species from the processing chamber in order to prevent the collection of the contaminants on components of the chamber. The pump liner can be heated, via conduction and irradiation from a radiation source, for example, in order to prevent the condensation of species on the liner. The pump liner also can be anodized or otherwise processed in order to increase the emissivity of the liner.

A method and coating are provided for temporarily protecting a substrate or article during shipping, handling or storage by applying a removable protective coating over at least a portion of the substrate. The substrate may be flat or curved and may have zero, one or more functional coatings. A plurality of substrates with the protective coating of the invention may be arranged in a shipping container so that the protective coating reduces the possibility of damage to the substrate or optional functional coating. In one embodiment, the protective coating is the evaporation or reaction product of an aqueous coating composition containing a polyvinyl alcohol polymer which may be subsequently removed by aqueous washing, thermal decomposition or combustion. In another embodiment, the protective coating is formed by sputtering a substantially carbon coating onto the substrate. The carbon coating is subsequently removed by combustion. The protective coating may have identification materials, such as colorants or fragrance materials, such that different types of substrates and/or functional coatings can be distinguished from each other. Additionally, the temporary protective coating can improve the heating of a functionally coated glass substrate.

In accordance with one aspect of an exemplary embodiment, a dryer for removing hydrocarbons and/or moisture from metal chips is provided. The dryer has a chamber including a top portion and a base portion. The top portion is comprised of a material having a higher emissivity than the material forming the base portion. A burner is provided which introduces heated gas into the top portion. A device for transporting the metal chips is provided in the base portion. The device receives the metal chips at an inlet and transporting the metal chips to an outlet.

An electro-kinetic air conditioner for removing particulates from the air creates an airflow using no moving parts. The conditioner includes an ion generator that has an electrode assembly including a first array of emitter electrodes, a second array of collector electrodes, and a high voltage generator. Preferably, a third or leading or focus electrode is located upstream of the first array of emitter electrodes, and/or a trailing electrode is located downstream of the second array of collector electrodes. The device can also include an interstitial electrode located between collector electrodes, an enhanced collector electrode with an integrally formed trailing end, and an enhanced emitter electrode with an enhanced length in order to increase emissitivity.

An IR detector in the form of a thermopile including one or more thermocouples on a dielectric membrane supported by a silicon substrate. Each thermocouple is composed of two materials, at least one of which is p-doped or n-doped single crystal silicon. The device is formed in an SOI process. The device is advantageous as the use of single crystal silicon reduces the noise in the output signal, allows higher reproducibility of the geometrical and physical properties of the layer and in addition, the use of an SOI process allows a temperature sensor, as well as circuitry to be fabricated on the same chip. The detector can also have an IR filter wafer bonded onto it and/or have arrays of thermopiles to increase the sensitivity. The devices can also be integrated with an IR source on the same silicon chip and packaged to form a complete and miniaturised NDIR sensor.

Aluminum phosphate-based microspheres and related compositions and methods of use.

A method and apparatus that combines the coating spray booth with process heating and radiation to increase the efficiency of the processing of powder coatings on wood, wood-based composite materials and plastic substrates. The temperature of the parts in process can be maintained within the booth after preheating or elevated in temperature within the booth before, during, and after the application of the coating material. The invention allows for the control of the rate of thermal expansion of heat sensitive materials, thereby reducing substrate damage from cracking. Increased efficiencies permit a significant reduction of processing energy expense. Multiple coatings can be applied and cured to parts in process within the invention while experiencing an overall reduction in the length of the processing system compared to the prior art.

The invention discloses a composite radiation refrigeration film. The composite radiation refrigeration film comprises a top layer and a reflection layer arranged under the top layer. The reflection layer has high reflectivity for at least a part of solar radiation. The top layer comprises one or more polymers, and the polymer has an emissivity of not less than 80% at a wave band of 7-14 microns.The top layer comprises a first emission layer close to the reflection layer and a second emission layer far away from the reflection layer. The first emission layer comprises a first polymer and a plurality of first foam holes formed in the first polymer, and the second emission layer comprises a second polymer and a plurality of second foam holes formed in the second polymer, wherein the diameter of the first foam holes is 1-20 microns, and the diameter of the second foam holes is 1-200 nm.

The present invention generally relates to power generation methods and secondary processes requiring high radiant and emissivity homogeneous combustion to maximize production output. In one embodiment, the present invention relates to a top cycle power generator with combustion exhaust modified to have radiant flux in excess of 500 kW per square meter and emissivity greater than 0.90, and supercritical CO2 power generating cycle to maximize exergy efficiency.

The invention relates to an infrared radiation enhanced coating and a preparation method thereof. The downconversion frequency shift infrared radiation enhanced coating is characterized by consisting of the following components in percentage by mass: 20 to 50 percent of radiation synergistic enhancer, 1 to 7 percent of downconversion frequency shift additive, 15 to 45 percent of high-temperature resistant base stock, 32 to 50 percent of high-temperature binder, 1 to 4 percent of flexibilizer and 1 to 4 percent of coating auxiliary agent, and the sum of the mass percentage of the components is 100 percent. The coating not only has high emissivity and good thermal shock resistance, but also can convert visible light into infrared radiation; and the thermal conversion efficiency of the coating is effectively improved.

The invention relates to a nanometer-stage far infrared ceramic powder and a preparation method thereof, and is mainly composed of nanometer zinc oxide, nanometer titanium oxide, nanometer yttrium oxide, nanometer zirconium oxide, nanometer aluminium oxide, nanometer copper oxide, nanometer nickel oxide, nanometer silicon oxide, ultrafine tourmaline powder, ultrafine silicon carbide, and the like. The grain diameter of nanometer composite metal oxide is 20 nm to 60nm; the grain diameter of tourmaline and the silicon carbide is no more than 0.5um; and the preparation method adopts liquid phase settling method, the process flow contains: mixture making-solution-surface active agent adding-settling-filtering and washing-dehydration treatment-drying-fluid energy milling-high temperature composition-cribration-performance testing-standby, and the aim is to overcome defect that emission power of internal single-crystal infrared powder and composite infrared powder is lower at present.

The invention discloses a variable emissivity and variable reflectivity electrochromic intelligent thermal control coating and a preparation method. Due to the adoption of conductive polymer advanced doping control and multi-layer composite photoelectric matching ways, initial electrochromic voltage is effectively reduced, and variation ranges of reflectivity and emissivity of an electrochromic active layer are widened. The prepared electrochromic coating adopts DC drive, ensures the driving voltage of lower than 2V, and has the reflectivity variations of more than 0.4 and the emissivity variations of more than 0.25; and after positive and negative 100-DC temperature alternation is performed on the coating for 100 times, the reflectivity and emissivity variations of the coating still meetthe indexes, so the coating substantially satisfies the needs of aerospacecrafts in intelligent thermal control.

The invention discloses a high-temperature glaze coating, a preparation method thereof, a binder and a using method of the coating, and aims at solving the problems of poor high-temperature resistance, low emissivity and absorptivity in a high-temperature zone, instability, and easiness of attenuation of the existing far-infrared energy-saving coating. The high-temperature glaze coating has the characteristics of good radiation heat transfer effect, high external blackness (the emissivity is greater than 0.95) and the like, and has the advantages of stable emissivity and absorptivity, non-attenuation performance and long service life in a long-term use process. Meanwhile, the coating can be tightly combined with a basal body by matching with the binder disclosed by the invention; the adhesive force is increased; a glazed ceramic polymer can be formed on the basal body after high-temperature sintering; the high-temperature glaze coating has the advantages of hardness, abrasive resistance, and long service life, and does not fall off; and the coating disclosed by the invention can also evenly coat the surface which cannot be covered by general coatings.

The invention relates to a Trombe wall with the comprehensive application of solar heat collection and radiation refrigeration. The Trombe wall comprises a transparent cover plate, a heat collection and storage wall, an air flow channel, upper ventilation openings, lower ventilation openings and baffles. The transparent cover plate is made of full-wave band high transmittance material. A venetian blind is arranged on the inner side face of the transparent cover plate, one side faces of slats of the venetian blind are coated with selective absorbing coatings, and absorptivity of the coatings ranges from 90% to 95% within the solar radiation wave band ranging from 0.2 micrometer to 3 micrometers. The other side faces of the slats of the venetian blind are selective radiation surfaces, emissivity of the selective radiation surfaces ranges from 80% to 90% within the atmospheric window wave band ranging from 8 micrometers to 13 micrometers, and emissivity of the selective radiation surfaces ranges from 60% to 90% within other wave bands. The Trombe wall can heat a room in the daytime and preserve heat of the room at night in winter, and can reduce heat loads of the room in the daytime and refrigerate the room at night in summer, and therefore the problem that a traditional Trombe wall can only heat the room and is single in function is solved; the defect that the appearance of the traditional Trombe wall is not attractive enough is overcome due to the utilization of the venetian blind attractive in appearance.

The present invention discloses an overheat prevention energy storage system preventing self from overheating, comprising a heat dissipating external surface, wherein at least a portion of the external surface is coated with at least one layer of heat dissipation coating of high emissivity. The present invention further discloses a method for preventing overheat of the energy storage system and a method for forming at least one layer of heat dissipation coating of high emissivity onto at least part of an external surface of the energy storage system or assemblies thereof.