5 results about "Solar transmittance" patented technology

To provide an exterior laminate that can be used as an exterior component and is capable of sufficiently suppressing heat accumulation due to radiant heat such as sunlight. [Solution] An exterior laminate 10 is disclosed, having, in order from the surface side, a) a transparent film layer 1 containing an acrylic resin, c) a printed layer 2, and b) a colored film layer 3 containing a polyvinyl chloride resin, wherein the printed layer 2 of c) does not contain carbon black, the solar transmittance of the printed layer 2 of c) is 70% or more, and the solar absorptance is 20% or less. Preferably, the printed layer 2 of c) contains a perylene-based colorant and / or a phthalocyanine-based colorant.

To provide an exterior laminate that can be used as an exterior component and is capable of sufficiently suppressing heat accumulation due to radiant heat such as sunlight. [Solution] An exterior laminate 10 is disclosed, having, in order from the surface side, a) a transparent film layer 1 containing an acrylic resin, b) a colored film layer 3 containing a polyvinyl chloride resin, and d) a base material 4, wherein the solar transmittance of b) the colored film layer 3 is 20% or more, and the solar reflectance of d) the base material 4 is 40% or more. The exterior laminate 10 may have, in order from the surface side, a) a transparent film layer 1 containing an acrylic resin, c) a printed layer 2, b) a colored film layer 3 containing a polyvinyl chloride resin, and d) a base material 4. It is preferable that c) the printed layer 2 does not contain carbon black.

The application discloses a multilayer phase change all-year energy-saving material and a preparation method thereof. The material comprises, from inside to outside, a carbonized substrate layer, a radiation energy collecting layer and a phase change radiation switch layer. The carbonized substrate layer is made of carbonized material slurry. The raw materials of the phase change radiation switch layer comprise modified nano vanadium dioxide 0.5-25 parts, a polymer substrate 20-60 parts, acetone 130-200 parts and zirconium dioxide 0.2-15 parts in terms of mass fraction. In the multilayer phase change all-year energy-saving material, the phase change radiation switch realizes the switch change of transmission and reflection at different temperatures through the spectrum change of the phase change material. The material has good radiation refrigeration function in summer, has solar reflectivity of more than 90% and atmospheric window emissivity, has solar transmittance of more than 70% in winter, absorbs solar heat through the radiation energy collecting layer to realize building heat absorption, and realizes all-year energy saving.

This invention discloses a Janus-structured temperature-controlled elastic material, its preparation method, and its applications. The Janus-structured temperature-controlled elastic material has a Janus double-layer structure, comprising a first structural layer and a second structural layer stacked on top of each other. The first structural layer has adjustable solar transmittance, with visible light transmittance ranging from 3% to 95%. The second structural layer has a highly efficient photothermal absorption and conversion function, with a photothermal conversion efficiency of 20% to 98%. This invention utilizes a black photothermal absorption and conversion elastomer as a substrate to absorb solar energy and convert it into heat. Furthermore, by adjusting the visible light transmittance of elastomers with different transmittance, the energy of transmitted visible light is controlled, thereby precisely controlling the photothermal conversion efficiency and achieving temperature regulation. It also has significant application potential in multiple fields such as passive solar heating, passive cooling, and infrared anti-counterfeiting.

This invention discloses a high light transmittance photovoltaic floating body, comprising a floating body body and a light guide plate. The floating body body has an inverted frustum-shaped structure or a hollow structure. When the floating body body has an inverted frustum-shaped structure, an outer light guide plate is used, which completely covers the outer wall of the floating body body. When the floating body body has a hollow structure, the diameter of the vertically penetrating opening of the floating body body gradually increases from top to bottom, and an inner light guide plate is used, which completely covers the inner wall of the opening of the floating body body. This invention uses a vertically mounted light guide plate to achieve optical reflection, thereby collecting direct and diffused solar light and guiding it to the water body below the photovoltaic floating body, increasing the solar transmittance of the water body below, and ensuring the ecosystem and ecological balance of the water body itself.