Aspects of the disclosure include a multilayer surface-covering assembly adapted to convert solar radiation to heat. The multilayer surface-covering assembly may include a first composite layer comprising a first amorphous refractory material and first metal nanoparticles, wherein the first amorphous refractor material encapsulates the first metal nanoparticles, and wherein the first composite layer is thermally coupled with a surface of a structure for conduction of heat from the first composite layer to the structure. he multilayer surface-covering assembly may also include an antireflective layer, wherein the first composite layer is disposed between the antireflective layer and the surface of the structure.

A solar heat collector includes a container, a transparent cover plate located on the container, a thermal insulation material located inside of the container to form an insulation space, and a heat absorption plate located in the insulation space. The heat absorption plate includes a base and a coating located on the base, and the coating includes a plurality of carbon nanotubes entangled with each other to form a network structure and a plurality of carbon particles in the network structure.

A solar heat collector includes a container, a transparent cover plate located on the container, a thermal insulation material located inside of the container to form an insulation space, and a heat absorption plate located in the insulation space. The heat absorption plate includes a base and a coating located on the base, and the coating includes a plurality of carbon nanotubes entangled with each other to form a network structure and a plurality of carbon particles in the network structure.

A passive thermal management system and methods of using a thermoresponsive hydrogel coating configured to autonomously switch between a heating state and a cooling state based on ambient temperature. At temperature greater than a lower critical solution temperature of the thermoresponsive hydrogel, the thermoresponsive hydrogel coating becomes solar reflective and has enhanced radiative cooling ability to achieve daytime radiative cooling. At temperatures less than the lower critical solution temperature, the thermoresponsive hydrogel coating becomes transparent to facilitate absorption of solar radiation by sun absorber.

A process for enhancing boiling to generate steam and superheated-steam by using renewable energy from Concentrated Solar Power. Steam can generate electricity, heating and cooling, sterilization, and other processes and products. The embodiment is made of a light weight small assembly and rotates on the X and Y axis to align with the solar radiation. The assembly has a steam generation unit (28) with Fresnel lenses affixed to concentrate the solar radiation and generate heat. The focal point of the radiation being concentrated is directed to the inner side of a glass tube (30) covered with nanoparticles. The surface area being heated by the solar radiation is increased by the use of nano articles. Water atomization/aerosol unit (60) creates reduced size water droplets that are channeled to glass tube (30) and put into contact with the heated nanoparticles. The atomized/aerosol water droplets help reduce heat dissipation.

A process for enhancing boiling to generate steam and superheated-steam by using renewable energy from Concentrated Solar Power. Steam can generate electricity, heating and cooling, sterilization, and other processes and products. The embodiment is made of a light weight small assembly and rotates on the X and Y axis to align with the solar radiation. The assembly has a steam generation unit (28) with Fresnel lenses affixed to concentrate the solar radiation and generate heat. The focal point of the radiation being concentrated is directed to the inner side of a glass tube (30) covered with nanoparticles. The surface area being heated by the solar radiation is increased by the use of nano articles. Water atomization/aerosol unit (60) creates reduced size water droplets that are channeled to glass tube (30) and put into contact with the heated nanoparticles. The atomized/aerosol water droplets help reduce heat dissipation.

A method for processing a transparent cover plate for a flat body includes the following steps of providing the transparent cover plate having an outer side and an opposite inner side, wherein the transparent cover plate includes a structured area with a light-scattering structure, forming of at least one optical interference layer on a cover plate side including applying a mask to the transparent cover plate, wherein the mask does not cover a first area of a cover plate surface and covers a second area of the cover plate side, and the first area and the second area are arranged to overlap the structured area, the at least one optical interference layer is applied in overlap with the mask, and removing of the mask, whereby the at least one optical interference layer is also removed.

This invention relates to flat plate solar collectors and, particularly, to solar panels applied in these flat plate solar collectors.

The proposed solar panel is designed as a shallow box, with rear and front walls, which are conditionally vertically positioned a most part of the external surface of the front wall is provided with a coating absorbing solar radiation.

In addition, the internal side of the rear wall is joined with an auxiliary perforated sheet.

There is a rectangular pipe, which is installed vertically or horizontally on the exterior side of the front wall and serves for passage of a liquid to be heated.

The solar panel is functioning as a flat heat pipe with zones of evaporation and condensation on the front wall.

Elastic deformations of the front and rear walls under difference between atmospheric and internal pressure allows to prevent overheating of liquid in the vertical rectangular pipe.

A solar heat collector includes a container, a transparent cover plate located on the container, a thermal insulation material located inside of the container to form an insulation space, and a heat absorption plate located in the insulation space. The heat absorption plate includes a base and a coating located on the base, and the coating includes a plurality of carbon nanotubes entangled with each other to form a network structure and a plurality of carbon particles in the network structure.

A solar heat collector includes a container, a transparent cover plate located on the container, a thermal insulation material located inside of the container to form an insulation space, and a heat absorption plate located in the insulation space. The heat absorption plate includes a base and a coating located on the base, and the coating includes a plurality of carbon nanotubes entangled with each other to form a network structure and a plurality of carbon particles in the network structure.