Abstract: A system for measurement of monochromatic attenuation for each wavelength of the spectrum, understood as such the attenuation at a wavelength of the spectrum with the spectral width provided by the measurement equipment, of the spectral attenuation in the spectral range of measurement, understood as such the set of monochromatic attenuations at all the wavelengths throughout the spectral range of measurement, and the total attenuation, understood as such the attenuation calculated by the integration of the spectral attenuation in the spectral range of measurement weighted with the solar spectrum.

Abstract: A cooking system includes a set-down plate for setting down cookware, and a detection unit designed to detect the cookware. The detection unit includes a radiation source for emitting electromagnetic radiation and a radiation detector for receiving electromagnetic radiation. A first radiation guiding element transmits the electromagnetic radiation from the radiation source to a set-down region of the set-down plate, and a second radiation guiding element transmits electromagnetic radiation reflected from the cookware to the radiation detector.

Abstract: A system for measurement of monochromatic attenuation for each wavelength of the spectrum, understood as such the attenuation at a wavelength of the spectrum with the spectral width provided by the measurement equipment, of the spectral attenuation in the spectral range of measurement, understood as such the set of monochromatic attenuations at all the wavelengths throughout the spectral range of measurement, and the total attenuation, understood as such the attenuation calculated by the integration of the spectral attenuation in the spectral range of measurement weighted with the solar spectrum.

Abstract: Spectrophotometer for the characterization of receivers of solar collectors in order to determine optical properties (transmittance and reflectance). The equipment allows the evaluation of a receiver tube in real time and in any kind of light conditions, both inside and outside. The equipment also allows the detection of the eccentricity between the outer tube and the inner tube, which directly influences the reliability of the measurement. The equipment has a mechanical system for allowing a rotation of the equipment around the tube in order to find the optimum measurement position and attach itself to the tube.

Abstract: A cooktop apparatus, in particular an induction cooktop apparatus, includes at least one glass unit and at least one coating configured as a multilayer structure, which is disposed on at least one subregion of at least a main face of the glass unit and has at least two layers. In order to achieve optimum compatibility with the sensors of the user interface without requiring a process after deposition, at least one of the layers is formed by at least one semiconducting material, to fulfill the function of an absorbing layer.

Abstract: Selective solar absorbent coating and manufacturing method, with solar absorption and low emissivity properties. The coating comprises a substrate (1) of metal, dielectric or ceramic material, at least one highly reflective metal layer (2) in mid-far infrared applied to the substrate itself which provides low emissivity properties, a mufti-layer structure of alternating dielectric and metallic layers (3) of subnanometric thickness applied to the reflective metal layer and at least one dielectric layer (4) that acts as an anti-reflective layer for the solar spectrum. The coating is applicable as a selective absorbent coating in absorbent tubes for parabolic-trough solar collectors, in solar panels for hot water, heating or domestic cooling, both in the form of absorbent tubes and absorbent sheets, in capture systems in tower solar thermoelectric power plants, and in capture systems in Stirling disk systems.

Abstract: A hot plate includes a base plate having an underside. A coating has at least two metallic layers and at least two dielectric layers and is formed on the underside of the base plate in such a way that a reflectivity of the hot plate is lower than 15% in a wavelength range between 380 nm and 780 nm.

Abstract: A domestic appliance apparatus includes at least one light-guiding element, and at least one sensor unit having at least one light sensor and configured to detect light transmitted through the light-guiding element and to determine at least one temperature characteristic. The at least one sensor unit has at least one sensor element configured to determine at least one characteristic of the at least one light-guiding element.

Abstract: A hob includes at least one heating inductor and a glass or glass ceramics cover plate that has at least one side coated with a metal layer coated with a metal layer. In order to improve the electromagnetic compatibility of the hob with a metal layer coating, the metal layer has a cover region which covers the heating inductor and is electrically insulated from a surrounding region of the metal layer, which surrounding region surrounds the cover region.

Abstract: The invention relates to a portable reflectometer and to a method for characterizing the collector mirrors used in solar power plants for the in-field characterization of reflection coefficients. The equipment includes all of the components required for this measurement, such as a module to measure the reflection coefficient of the mirror, an electronic data acquisition and processing system, a system for processing data and controlling the equipment, a system for storing the data of interest, a user interface system, and a system allowing communication between the aforementioned systems and an outer casing. The equipment can be used to characterize the specular reflection coefficient of flat or curved mirrors of different thicknesses, without requiring adjustments to be made to the equipment, minimizing the influence of diffuse reflection on the measurement.

Abstract: A cover plate for a domestic appliance includes an at least semi-transparent support plate having a bottom provided with at least one colored layer and at least one semi-transparent metal layer. The metal layer has at least one continuous cut-out section and the colored layer is arranged in the area of the cut-out section.

Abstract: Selective solar absorbent coating and manufacturing method, with solar absorption and low emissivity properties. The coating comprises a substrate (1) of metal, dielectric or ceramic material, at least one highly reflective metal layer (2) in mid-far infrared applied to the substrate itself which provides low emissivity properties, a multi-layer structure of alternating dielectric and metallic layers (3) of subnanometric thickness applied to the reflective metal layer and at least one dielectric layer (4) that acts as an anti-reflective layer for the solar spectrum. The coating is applicable as a selective absorbent coating in absorbent tubes for parabolic-trough solar collectors, in solar panels for hot water, heating or domestic cooling, both in the form of absorbent tubes and absorbent sheets, in capture systems in tower solar thermoelectric power plants, and in capture systems in Stirling disk systems.

Abstract: Spectrophotometer for the characterisation of receivers of solar collectors in order to determine optical properties (transmittance and reflectance). The equipment allows the evaluation of a receiver tube in real time and in any kind of light conditions, both inside and outside. The equipment also allows the detection of the eccentricity between the outer tube and the inner tube, which directly influences the reliability of the measurement. The equipment has a mechanical system for allowing a rotation of the equipment around the tube in order to find the optimum measurement position and attach itself to the tube.

Abstract: The invention relates to a spectrophotometer for the automated optical characterization of solar collector tubes and to a method for the operation thereof, that measures the coefficient of transmission of the glass tube and of reflection of the metal tube. The device includes all the necessary components for taking said measurement, such as the optical bench supporting the tube, the standard or framework, and the optical modules for the device, a main module that generates the light bundles, a measuring module that measures the coefficient of transmission of the outer glass tube and the coefficient of reflection of the inner metal tube, a mechanical system of tube rotation, an electronic system of data acquisition and processing, an external computer for controlling the device and processing the data measured, and a system of communication between the device and the computer.

Abstract: Selective solar absorbent coating and manufacturing method, with solar absorption and low emissivity properties. The coating comprises a substrate (1) of metal, dielectric or ceramic material, at least one highly reflective metal layer (2) in mid-far infrared applied to the substrate itself which provides low emissivity properties, a multi-layer structure of alternating dielectric and metallic layers (3) of subnanometric thickness applied to the reflective metal layer and at least one dielectric layer (4) that acts as an anti-reflective layer for the solar spectrum. The coating is applicable as a selective absorbent coating in absorbent tubes for parabolic-trough solar collectors, in solar panels for hot water, heating or domestic cooling, both in the form of absorbent tubes and absorbent sheets, in capture systems in tower solar thermoelectric power plants, and in capture systems in Stirling disk systems.

Abstract: Selective solar absorbent coating and manufacturing method, with solar absorption and low emissivity properties. The coating comprises a substrate (1) of metal, dielectric or ceramic material, at least one highly reflective metal layer (2) in mid-far infrared applied to the substrate itself which provides low emissivity properties, a mufti-layer structure of alternating dielectric and metallic layers (3) of subnanometric thickness applied to the reflective metal layer and at least one dielectric layer (4) that acts as an anti-reflective layer for the solar spectrum. The coating is applicable as a selective absorbent coating in absorbent tubes for parabolic-trough solar collectors, in solar panels for hot water, heating or domestic cooling, both in the form of absorbent tubes and absorbent sheets, in capture systems in tower solar thermoelectric power plants, and in capture systems in Stirling disk systems.

Abstract: A domestic appliance apparatus includes at least one light-guiding element, and at least one sensor unit having at least one light sensor and configured to detect light transmitted through the light-guiding element and to determine at least one temperature characteristic. The at least one sensor unit has at least one sensor element configured to determine at least one characteristic of the at least one light-guiding element.

Abstract: Portable spectrophotometer and method for characterizing solar collector tubes for simultaneously and on-field characterizing reflection and transmission coefficients. This device includes all the components needed to take this measurement, such as a module that takes the measurement of the reflection coefficient (R) of the inner tube (1?), a module that takes the measurement of transmission coefficient (T) of the outer tube (1?), an electronic data acquisition and processing system (12), an external computer (13) for controlling the device and sending the measured data (17) and a communication system (15) between device and the computer (13).

Abstract: A cooktop plate includes a base plate having a lower side. A coating is formed on the lower side of the base plate and includes at least two metal layers and at least two dielectric layers in such a manner that a first color parameter a* or a second color parameter b* of the cooktop plate has a value greater than +10 or smaller than ?10.

Abstract: A cooktop apparatus, in particular an induction cooktop apparatus, includes at least one glass unit and at least one coating configured as a multilayer structure, which is disposed on at least one subregion of at least a main face of the glass unit and has at least two layers. In order to achieve optimum compatibility with the sensors of the user interface without requiring a process after deposition, at least one of the layers is formed by at least one semiconducting material, to fulfill the function of an absorbing layer.