Improved roof covering element
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Solution Overview
Problem
Existing solar panels with heat-absorbing elements are bulky and heavy due to the pipe system for heat discharge, limiting their size and efficiency, as the thickness and weight are determined by the heat-discharging layer.
Innovation Solution
A thin heat-absorbing element with a harp configuration of channels and recesses between two panels allows efficient heat transfer and discharge, where channels are wider than tall, enabling direct contact with liquid over a large surface area, and using aluminum for lightweight and cost-effective construction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a pipe system is used for heat discharge in heat-absorbing elements, then heat can be discharged efficiently, but the weight and thickness of the solar panel increase
Solution Approach 1:
The invention extracts the liquid cooling channels directly from the heat-absorbing element structure itself, eliminating the need for separate pipe systems. The channels are integrated into the absorber plate, allowing efficient heat discharge while reducing overall weight and thickness.
Solution Approach 2:
The liquid cooling channels are nested within the heat-absorbing element structure. The channels are formed as cavities or grooves within the absorber plate material, creating a compact integrated structure that maintains heat discharge efficiency without adding external components.
2Loss of energy
If a pipe system is used for heat discharge in heat-absorbing elements, then heat can be discharged efficiently, but the thickness of the solar panel increases
Solution Approach 1:
The liquid cooling channels are extracted and integrated directly into the heat-absorbing element, eliminating the need for thick external pipe systems. This integration allows efficient heat discharge while maintaining a thin overall panel profile.
Solution Approach 2:
The cooling channels are arranged in a planar configuration within the heat-absorbing element rather than using three-dimensional pipe systems. This two-dimensional arrangement enables efficient heat discharge while minimizing the thickness dimension of the solar panel.
3Weight of moving object
If the heat-absorbing element is made thin and light, then the solar panel size is no longer determined by weight, but heat discharge efficiency may be compromised
Solution Approach 1:
The heat-absorbing element is designed with locally optimized features including extended fins and strategically positioned cooling channels. These local structural enhancements maximize heat transfer efficiency in specific areas, allowing the overall element to remain thin and light while maintaining effective heat discharge.
Solution Approach 2:
The invention optimizes parameters such as channel dimensions, fin spacing, and material thermal conductivity to achieve high heat discharge efficiency in a thin, lightweight structure. By carefully adjusting these parameters, the design maintains thermal performance without requiring increased weight or thickness.
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 solar panel achieves efficient heat discharge while maintaining a thin and light form, improving energy yield and integration with existing roofs without increasing weight or thickness, and can be easily curved or shaped.
Implementation Method 1
a liquid-tight space is formed between the first and second panels, which space comprises channels through which liquid flows during use of the solar panel for the purpose of absorbing the heat absorbed by the first panel
Implementation Method 2
efficient transfer of the heat absorbed by the first panel to the liquid
Implementation Method 3
channels through which liquid flows during use of the solar panel for the purpose of absorbing the heat absorbed by the first panel
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
The invention relates to a liquid-cooled solar panel intended for placing on a roof, wherein the roof comprises a roofing board covered with roof covering elements and wherein the panel at least partly replaces the roof covering elements that are present, comprising a first photovoltaic layer which is provided with photovoltaic cells, a heat-discharging layer lying against the rear side of the first photovoltaic layer, wherein the heat-discharging layer is provided with one or more heat-absorbing elements through which liquid which discharges heat absorbed by the heat-absorbing elements flows during operation, a heat-insulating layer arranged against the heat-discharging layer, and a transparent cover layer arranged on the first photovoltaic layer at some distance therefrom, wherein the edges of the cover layer are formed such that the edges co-act with adjacent roof covering elements during operation.