Electric Radiator Inner Coating Layout for Uniform Front Temperature
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Solution Overview
Problem
Electric radiators often exhibit poor thermal homogeneity on their outer faces due to varying emissivities of the internal faces, leading to hot and cold spots, which cause thermal discomfort. Existing solutions are either expensive or ineffective in precisely adjusting the temperature distribution.
Innovation Solution
An electric radiator design featuring an internal face with zones of different emissivities, achieved by applying a coating with a lower emissivity than the base material in some areas and higher emissivity in others, allowing for precise adjustment of radiant energy transfer to achieve uniform temperature distribution on the external face.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a uniform high-emissivity coating is applied to the internal face of the front facade, then the overall heat absorption is improved, but hot spots are created in the central zone opposite the heating body
Solution Approach 1:
The patent applies different emissivity coatings to different zones of the internal face: high-emissivity coating in peripheral zones to maximize heat absorption without creating hot spots, and low-emissivity coating in the central zone to reflect radiant energy away from the central area, preventing localized overheating. This spatial variation in coating properties resolves the contradiction between overall heat absorption and temperature uniformity.
2Use of energy by moving object
If the internal face has low emissivity material (sheet metal or low-emissivity glass), then the energy transfer from heating body is high, but the front face becomes too hot causing thermal discomfort
Solution Approach 1:
Instead of using low-emissivity material uniformly across the entire internal face, the patent selectively applies low-emissivity coating only to the central zone where the heating body is located. The peripheral zones use high-emissivity coating to absorb and distribute heat more evenly. This localized approach maintains efficient energy transfer from the heating body while preventing excessive heat concentration and thermal discomfort on the front face.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution allows for precise temperature adjustment on the external face, reducing hot spots and increasing cold areas, providing better thermal comfort without the need for additional heating elements, and is more cost-effective than existing methods.
Implementation Method 1
the internal face of which absorbs the radiant energy generated by said heating body
Implementation Method 2
The emissivity (ε) determines the ability of the internal face to absorb the radiant energy emitted by the heating body
Implementation Method 3
whose external face restores all or part of said absorbed energy
Implementation Method 4
the natural convection of the heated air leads to much greater heating in the upper part of the front facade
Data Source
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AI summary
The invention relates to an electric radiator comprising a support frame (10), inside of which an electric heating body (20) is inserted, the front surface of said frame being provided with a front facing (30), the inner surface (32) of which absorbs the radiating energy generated by said heating body, and the outer surface (31) of which restores all or part of said absorbed energy, said inner surface having areas for transferring radiating energy which have different degrees of emissivity and which affect the radiating energy restored by said outer surface and the temperature of said front facing, characterized in that the inner surface (32) has areas covered by a coating (40, 40') and areas (400, 400') not covered by said coating, said coating having a different emissivity than that of said inner surface.