41 results about "Low emittance" patented technology

A solar thermal photovoltaic device, and method of forming same, includes a solar absorber and a spectrally selective emitter formed on either side of a thermally conductive substrate. The solar absorber is configured to absorb incident solar radiation. The solar absorber and the spectrally selective emitter are configured with an optimized emitter-to-absorber area ratio. The solar thermal photovoltaic device also includes a photovoltaic cell in thermal communication with the spectrally selective emitter. The spectrally selective emitter is configured to permit high emittance for energies above a bandgap of the photovoltaic cell and configured to permit low emittance for energies below the bandgap.

Certain example embodiments of this invention relate to insulating glass (IG) units including three substantially parallel spaced apart glass substrates, wherein at least two of the surfaces include low-emissivity (low-E) coatings and at least some of the non-low E coated surfaces have antireflective (AR) coatings disposed thereon. In certain example embodiments, low-E coatings are provided on the second and fifth surfaces of the IG unit, and each internal surface of the IG unit that does not support a low-E coating does support an AR coating. Additional AR coatings may be provided on one or both of the outermost surfaces in certain example embodiments. In some cases, the center substrate need not be heat treated because of the reduced absorption enabled by providing the low-E coatings on the two outermost substrates, as well as the reduced heat accumulation in the center lite itself and in the two adjacent spacers.

The present invention provides a method for extracting a charged particle beam from a charged particle source. A set of electrodes is provided at the output of the source. The potentials applied to the electrodes produce a low-emittance growth beam with substantially zero electric field at the output of the electrodes.

A glass article having a solar control coating is disclosed for use in producing heat reducing glass especially for use in architectural windows. The coated article includes a glass substrate, a coating of an antimony doped tin oxide deposited on and adhering to the glass substrate and a coating of fluorine doped tin oxide deposited on and adhering to the surface of the coating of antimony doped tin oxide. The low emittance of the coated glass article, when combined with the surprisingly selective solar absorption of the multilayer stack provides improved heat rejection in summer and heat retention in winter, while permitting the transmittance of a relatively high degree of visible light.

Vacuum-insulated glass windows include two or more glass panes, and glass-bump spacers formed in a surface of one of the panes. The glass-bump spacers consist of the glass material from the body portion of the glass pane. At least one of the glass panes comprises chemically-strengthened glass. Methods of forming VIG windows include forming the glass-bump spacers by irradiating a glass pane with a focused beam from a laser. Heating effects in the glass cause the glass to locally expand, thereby forming a glass-bump spacer. In embodiments where the glass-bump spacers are formed in a chemically-strengthened glass pane, the glass-bump spacers may be formed before or after the chemical strengthening. A second glass pane is brought into contact with the glass-bump spacers, and the edges sealed. The resulting sealed interior region is evacuated to a pressure of less than one atmosphere.

Methods and apparatus for focusing proton and ion beams within the profile of the beam envelope of an ultra-low emittance, charge neutralized emission to create a pattern without focusing the entire beam envelope or rastering. In one implementation, a method for use with laser accelerated ion beams comprises the steps: irradiating a surface of a target with pulsed laser irradiation to produce an electron plasma emission on a non-irradiated surface of the target, the electron plasma emission producing an ion beam emission on the non-irradiated surface, the ion beam emission having a beam envelope; and focusing ions of the ion beam emission into a plurality of component beams within the beam envelope as a result of the shape of the non-irradiated surface of the target.

The invention relates to a reversibly changing material with temperature emittance used for air-conditioning type construction materials, which is prepared from La2O3, SrCO3, Mn3O4, Na2O, K2O and CaO of a finite weigh proportion through burning, first in 850-1100 deg. C air for 5-15 hrs, and in 1150-1250 deg. C air for 10-20 hrs, the material exhibits low emittance property at low-temperature, thus diminishing thermal transpiration on the object surface, when temperature arises, it exhibits high emissivity property, thus increasing thermal transpiration on the object surface, the two different properties can vary reversibly with the temperature.

A photoelectron linear accelerator for producing a low emittance polarized electron beam. The linear accelerator includes a tube having an inner wall, the inner tube wall being coated by a getter material. A portable, or demountable, cathode plug is mounted within said tube, the surface of said cathode having a semiconductor material formed thereon.

The invention discloses a high temperature-resistant low-infrared emittance composite coating capable of being coated on stainless steel or an alloy. The high temperature-resistant low-infrared emittance composite coating contains three-layer structures, wherein the three-layer structures sequentially include a dispersion barrier layer, a low emittance functional layer and an MgO protective film from inside to outside; the dispersion barrier layer is formed from a ZnO-Al2O3-SiO2 microcrystalline glass coating, and the low emittance functional layer is formed from an Au film. A preparation method of the high temperature-resistant low-infrared emittance composite coating comprises the following steps: firstly uniformly mixing raw material powder, placing into a crucible, then smelting at high temperature, quenching, carrying out ball milling on obtained glass residues, drying, and screening to obtain glass powder; mixing the glass powder and an organic carrier, and carrying out ball milling dispersion to obtain a dispersion barrier layer coating; and uniformly brushing the dispersion barrier layer coating on a substrate material by adopting a brushing method, preparing the Au film on the prepared dispersion barrier layer by adopting a magnetron sputtering method, and then preparing the MgO film to obtain the high temperature-resistant low-infrared emittance composite coating. The high temperature-resistant low-infrared emittance composite coating disclosed by the invention has the advantages of simple preparation process, easiness for operation, excellent product property and low cost.

A photoelectron linear accelerator for producing a low emittance polarized electron beam. The linear accelerator includes a tube having a cylindrical wall, said wall being perforated to allow gas to flow to a pressure chamber containing ultra high vacuum pumps located outside the accelerator. The RF accelerator cavity comprises of two concentric cylindrical regions having different outside diameters and different lengths.

The invention relates to a method for improving the bonding strength of a low-emissivity coating and a carbon fiber base material, and solves the problem that the mechanical properties of the coating and the carbon fiber base material are reduced due to high-temperature failure of an organic resin binder on the surface of the carbon fiber base material compared with a traditional direct spraying method. By means of high-temperature pretreatment and preparation of an organic silicon resin middle layer, the binding force of the coating and the surface of the base material is increased, an obtained sample has the advantages of being resistant to high temperature, low in emissivity, high in adhesive force and the like, good infrared performance and good mechanical performance can be achieved, the adhesive force of the sample is about 5.0 +/-0.4 Mpa after the sample is subjected to high-temperature heat treatment for 30 min at the temperature of 500 DEG C, and the requirements of various fields on good binding force of the high-temperature-resistant low-emissivity coating and the polyimide carbon fiber base material are met.

The invention belongs to the technical field of infrared stealth, and particularly relates to a preparation method for a high-temperature-resistant infrared low-emittance coating. According to the method provided by the invention, the coating does not need to be added with an adhesive, so the emittance is not increased at a high temperature; and moreover, the prepared coating is non-transparent inthe normal direction of 2 microns to 14 microns, and the coating provides benefits to an infrared stealth technology. Besides, a YSZ material is relatively good in heat insulation performance. Therefore, when the YSZ material is applied to preparation of a low-emittance coating, reduction of the temperature of a target surface is facilitated. In this way, the effect of reducing the infrared radiation intensity of an aircraft is doubled. Furthermore, in order to make sure that a YSZ coating is non-transparent in other directions, a YSZ/NiCoCrAIY composite coating is sprayed on a graphite substrate in advance, and then preparation of the YSZ coating and stripping of the graphite substrate are carried out on the surface of the composite coating.

In a glass panel includes at least three glass sheets for forming an air layer (K) and a vacuum layer (S) side by side and for partitioning between outdoor space and indoor space, at least either an outdoor-side glass sheet contacting the outdoor space or an indoor-side glass sheet contacting the indoor space of the glass sheets (G) contacts the vacuum layer (S) and includes a low-emittance film layer (M) formed on a face thereof contacting the vacuum layer (S).

The invention discloses a solar heat transfer unit (1). The solar heat transfer unit (1) comprises a heat-absorbing area (2), a heat-releasing area (4), a fixed-shape heat-transfer medium and a driving device (11), wherein the interiors of the heat-absorbing area (2) and the heat-releasing area (4) are provided with inner-layer metal tubes, and the fixed-shape heat-transfer medium penetrates through the inner-layer metal tubes; the heat-absorbing area (2) is arranged at the position capable of receiving solar energy rays, a coating with high absorption rate and low emittance is coated on the external surface of the part of the heat-absorbing area by the inner-layer metal tube; and the driving device (11) can drive the fixed-shape heat-transfer medium to run in the solar heat transfer unit (1). The invention has the following advantages: the unit can be subjected to mass production and installation in a large size; a sphere metal or sphere ceramic (5) of the fixed-shape heat-transfer medium has high coefficient of heat conductivity, thus the heat transfer efficiency is high, no leak danger exists and an environmentally-friendly goal can be realized; the unit has the ultra-high temperature heat-transfer capacity; the unit has low cost, stable performance and long service life and is easy to manufacture.

Aspects of the disclosure relate to batteries for use in the stratosphere, such as those employed on aerial vehicles. The battery may include an outer case structure, a thermal insulator such as foam arranged within the outer case structure, a battery management unit and a plurality of battery cells both arranged within the thermal insulator, and a heater arranged within the thermal insulator and around the battery cells. In some instances, the battery may also include a thermal reflector arranged between the heater and the thermal insulator, wherein a surface of the thermal reflector is arranged to reflect heat back towards ones of the plurality of battery cells. In some instances, the thermal insulator may include overlapping baffles to reduce an amount of air passing from the outer case and through the thermal insulator. In some instances, the outer case may include a plastic layer with a low emissivity coating.

A device, for depositing a layer on a substrate by supplying one or more process gases to a process chamber, includes a susceptor and one or more transmitter coils. The susceptor bearing the substrate can be heated to a process temperature by means of an electromagnetic alternating field generated by the one or more transmitter coils. The one or more transmitter coils have a coating that consists of tin and nickel in order to provide a corrosion-resistant coating, which simultaneously has low emissivity and is therefore effective in the presence of chlorine compounds and moisture.

The invention provides an SrZrO3 preparation method. The preparation method comprises the steps that SrCO3 and ZrO2 are mixed and pressed into a blank, then the blank is placed in a microwave environment to be treated, and the treatment comprises powder treatment or block treatment, wherein the powder treatment comprises the steps: heating the blank to 1100-1400 DEG C, carrying out heat preservation for not less than 30 min, and thus obtaining SrZrO3 powder; and the block treatment comprises the steps: adding powder, burying and sintering, heating to 1200-1650 DEG C at the rate of 5-25 DEG C/min, sintering, and carrying out heat preservation for not less than 30 min to obtain an SrZrO3 block. The prepared SrZrO3 block has the excellent characteristics of good chemical stability, mechanicalstrength, high-temperature sintering resistance and the like, and can be used as an infrared stealth skin material for military weapons such as aircraft, tanks and the like with low emissivity, low thermal conductivity, high expansion coefficient and high temperature resistance. Meanwhile, the invention also provides the SrZrO3 ceramic prepared by the method.

The invention provides an infrared stealth leather material, which has low emissivity and controllable temperature under a normal-temperature infrared atmospheric window of 8-14 [mu]m, and is characterized in that natural leather prepared from livestock skin is used as a base material, and the surface of the base material is coated with a low-emissivity metal material, or after the natural leatheris dehydrated and added into a phase change material, the natural leather is coated with the low-emissivity metal material, so that the infrared stealth material which is low in emissivity, controllable in temperature, soft, foldable and wearable is prepared. The leather material with dual functions of infrared stealth and radar stealth can be prepared by regulating and controlling the metal variety and proportion of the coating.