90results about How to "Improve light-to-heat conversion rate" patented technology

The invention discloses a hemispherical light-collecting secondary reflective solar water heater, which receives solar energy by means of the light reflecting and focusing effects of a large-plane reflector and a revolution paraboloid reflector, and can greatly improve the reception efficiency of the solar energy and be used for collecting and receiving the solar energy under environments with high light and low light.

The invention discloses a light centralization and collection device of a solar energy thermoelectric unit by a parabolic cylinder, which receives solar energy through the light reflection and focus effects of the parabolic cylinder. The device can enhance the receiving efficiency of the solar energy thermoelectric unit, and can be used to realize the collection and receiving of the solar energy under the environments both of strong light and weak light.

The invention discloses a preparation method of a photo-thermal conversion coating for laser quenching. The preparation method comprises a formulation process and a preparation process. According to the invention, a component formula, in which silicon dioxide is used as a carrier dispensing agent, aluminum oxide and titanium nitride are used as blackening agents, cerium dioxide and praseodymium oxide are used as metallographic structure refining agents, shell-lac is used as an adhesive, and absolute ethyl alcohol is used as a quick-drying solvent, is adopted, technical schemes of conventionalequipment and a simple mixed process are utilized, the problems and defects of low photo-thermal conversion efficiency, low cost, uneven heating, small adhesion force and easiness in falloff existingin the prior art are overcome, and the photo-thermal conversion coating prepared by adopting the preparation method of the photo-thermal conversion costing for laser quenching is used for laser quenching to achieve the purposes of increasing the photo-thermal conversion efficiency, reducing the cost, heating uniformly and enhancing the adhesion force.

The invention belongs to the field of biological chemistry, and relates to an aza-BODIPY type derivative with the photothermal effect and synthesis and application thereof. The aza-BODIPY type compound has the general structural formula shown in a formula I (please see the specification for the formula I). The aza-BODIPY compound has the excellent photothermal effect, light energy can be convertedinto heat energy in very short time, the very good stability is achieved, the aza-BODIPY compound can be recycled, and the aza-BODIPY compound has considerable application prospects in photothermal therapy of the biological chemistry and medical fields.

The invention provides a disc type solar thermal and gas hybrid power generation device. The disc type solar thermal and gas hybrid power generation device mainly consists of a solar tracking probe (1), a disc reflection mirror (2), a tower frame (3), a heating chamber (4), a Stirling generator (6) and a tower arm (7). The disc type solar thermal and gas hybrid power generation device is simple in structure and high in practicability and energy efficiency conversion rate, meanwhile fully utilizes abundant rural methane resources or combustible gases like natural gas and petroleum gas in cooperation with solar energy for power generation, overcomes the shortcoming that traditional solar power generation capacity is limited and influenced by weather conditions and can output electric energy at any time. The disc type solar thermal and gas hybrid power generation device can be widely applied to the vast rural areas, remote mountainous areas and other areas where power grids are difficult to arrange to provide electricity for production and life, the disc type solar thermal and gas hybrid power generation device can be installed in the mode of mutually independent and scattered single sets or multiple sets connected in parallel to form a miniature power grid.

The invention relates to a thermoelectric lighting device using a double parabolic cylindrical surface to reflect parallel light and focus solar energy. Due to the reflecting and focusing action of a parabolic cylindrical surface, uniform parallel light of which the intensity is several times higher than that of sunlight is formed and irradiated on solar energy receiving equipment so as to greatly improve the solar energy receiving efficiency. The thermoelectric lighting device can be used for collecting and receiving the solar energy in an environment with strong light and weak light.

The invention relates to the technical field of solar optothermal power generation, and discloses a spiral cavity type solar thermal collector which comprises a heat conducting medium inlet, a heat conducting medium outlet and a heat absorbing coil pipe. The heat absorbing coil pipe is spiral, heat absorbing fins used as heat absorbing cavities are arranged on spiral gaps of the heat absorbing coil pipe, and the surfaces of the heat absorbing fins are paved with selective absorption coatings. The bent groove type heat collecting cavity type structure enables the temperature of the heat exchange surface to be more evenly distributed, heat collecting and exchanging efficiency of the thermal collector is improved, and the heat preservation and manufacturing processes are simplified.

A solar water heater lighting by using a light-focusing cylinder of a secondary reflection parabolic cylinder receives the solar energy under the action of light reflection and focusing of a large-plane reflector and a parabolic cylinder reflector so as to dramatically improve the receiving efficiency of the solar energy, and collect and receive the solar energy under the condition of high light and low light.

The invention relates to a hemispherical surface closed daylighting secondary reflection solar water heater. The heater receives solar energy through the reflection focusing function of a large plane reflective mirror and a rotating paraboloid reflective mirror, which can increase the efficiency of receiving solar energy greatly; and the solar energy can be collected and received in either strong light or weak light environment.

The invention provides an efficient enhanced specific rare earth photoluminescence anti-counterfeiting film and a preparation method thereof. The anti-counterfeiting film comprises a heat insulation base layer, a plasmon enhancement layer, an optical isolation layer, a heat absorption type rare earth light-emitting layer and a heat insulation cover layer from bottom to top. The heat insulation base layer and the heat insulation cover layer are used for carrying out heat insulation and heat storage on photo-thermal induced by the plasmon enhancement layer, and the photo-thermal is absorbed by the heat absorption type rare earth light-emitting layer so as to assist the plasmon enhancement layer in improving rare earth light emission; the mobility of carriers and the excitation electric fieldor emission electric field of light-emitting particles are increased through the plasmon enhancement layer, so that rare earth luminescence is enhanced; energy is promoted to be transferred to the rare earth light-emitting layer through the optical isolation layer so as to optimize rare earth light emission. By means of the design, the heat absorption type rare earth light-emitting layer emits red, green and blue light after being subjected to stimulated radiation, the light-emitting enhancement effect that green light is stronger than blue light and red light can be achieved when absorbed heat is increased, and therefore, the specific anti-counterfeiting film high in safety, anti-counterfeiting identification degree and copying difficulty is obtained.

The invention relates to a parabolic cylindrical surface light concentration hollow concave closed cavity light collection solar water heater which receives solar energy through reflecting and focusing roles of the parabolic cylindrical surface, and can greatly improve the receiving efficiency of the solar energy and be used for realizing collection and receiving of the solar energy under the environments of strong light and weak light.

The invention relates to a solar thermoelectric day-lighting device for connecting solar energy by a parabolic cylindrical surface-spotlighted hollow concave closed cavity. The device receives the solar energy through the reflective focusing effect of the parabolic cylindrical surface, can greatly improve the receiving efficiency of the solar energy and can be used for realizing the collection and the receiving of the solar energy under the environments of strong light and weak light.

Provided is a revolution paraboloid spotlight spherical surface closing lighting solar hot-water generating device. The device receives solar energy through a reflect light focusing effect of a revolution paraboloid, the receiving efficiency of the solar energy is greatly improved, solar energy collecting and receiving under hard light and weak light environments are achieved.