Electrical panel heating device and method and material for the production thereof
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Solution Overview
Problem
Existing heating systems in buildings, especially in older structures, are difficult to install, costly, and prone to mold growth due to inadequate moisture management, leading to inefficient heating and structural issues.
Innovation Solution
A building material mixture containing inorganic binders, non-conductive aggregates, and conductive particles is homogeneously mixed and applied as a liquid or paste, forming a planar heating device with low-resistance contacts for uniform current distribution, which is installed directly on building surfaces to provide consistent heat distribution without gaps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional radiant heating systems are installed beneath the plaster of a wall, then heating function is provided, but the system is complex to install and requires structural modifications
Solution Approach 1:
The heating function is merged with the plaster layer itself. The plaster is formulated with conductive particles (graphite, carbon fibers, or metal powders) to become electrically conductive, eliminating the need for separate heating elements and simplifying installation to merely applying the plaster layer.
Solution Approach 2:
The plaster layer serves multiple functions simultaneously: it provides thermal insulation, structural finishing, and electric heating. This multi-functionality eliminates the need for separate heating system installation and reduces overall system complexity.
2Reliability
If waterproof or vapor-proof films are placed between the heating element and building components, then the heating element is protected, but water vapor diffusion is prevented causing damp patches and mold growth
Solution Approach 1:
The harmful waterproof film layer is completely removed from the system. Instead, the heating function is integrated into the plaster itself, which remains permeable to water vapor, allowing natural moisture diffusion while maintaining heating functionality.
Solution Approach 2:
A composite plaster material is created by combining traditional plaster components (cement, lime, sand) with electrically conductive particles (graphite, carbon fibers, or metal powders). This composite maintains the permeability of traditional plaster while adding heating capability, eliminating the need for impermeable protective films.
3Ease of manufacture
If molded heating elements are mounted to the wall with gaps, then installation is simplified, but gaps allow subsequent mold growth
Solution Approach 1:
The heating element is merged with the wall plaster layer itself, eliminating gaps between the heating component and the wall surface. The conductive plaster is applied directly to the wall, ensuring complete coverage and preventing mold growth in gaps.
Solution Approach 2:
The heating function is distributed homogeneously throughout the entire plaster layer rather than being concentrated in separate molded elements. This homogeneous distribution ensures complete wall coverage and eliminates gaps where mold could grow.
4Ease of manufacture
If electrically conductive particles are not homogeneously distributed in the building material, then manufacturing is simplified, but heating uniformity is poor with hot and cold spots
Solution Approach 1:
The particle size and shape of conductive additives are optimized to improve distribution uniformity. Using fine graphite powder or short carbon fibers instead of large particles enhances homogeneity during mixing while maintaining electrical conductivity and heating performance.
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
The solution ensures uniform heating across surfaces, preventing mold growth and simplifying installation by integrating heating elements into building materials, thus eliminating hot and cold spots and reducing installation complexity.
Implementation Method 1
a building material that can be processed in liquid or paste state is mixed from a building material mixture consisting of at least one inorganic binder, e.g. cement and/or gypsum, at least one electrically non-conductive aggregate, e.g. sand and/or rock flour, and at least one further aggregate consisting of electrically conductive particles, e.g. ferrosilicon or carbon fibers and/or chips
Data Source
Figure 1
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AI summary
The invention relates to an electrical panel heating device and to a method and a material for the production thereof; the panel heating device is produced by curing a liquid or pasty material, comprising at least one inorganic binding agent, for example cement and/or gypsum, at least one electrically non-conductive additive, for example sand and/or rock flour, and at least one further additive composed of electrically conductive particles, for example carbon fibres and/or trips; after mixing this material in the liquid or pasty state, it is processed to form a product in the form of a panel which is provided with low-impedance contacts for feeding in a current distributed over an panel.