Insulation with adjustable r-value
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Solution Overview
Problem
Existing layered thermal insulation systems lack efficient control over thermal gradients and energy efficiency, particularly in building structures, where they fail to maintain optimal temperature differences with minimal energy consumption and compact thickness.
Innovation Solution
A layered insulation element with radiant barrier layers and an infrared heating film between structural and insulation layers, allowing for controlled thermal gradient adjustment by varying electrical power to the heating film within a moderate range (0-5 W/m²), enhancing thermal resistance and reducing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional passive insulation layers are used to achieve high thermal resistance, then the insulation effectiveness is maintained, but the panel thickness increases significantly
Solution Approach 1:
The patent applies dynamic heating elements (infrared heating films) within the insulation panel that can be actively controlled to generate heat on demand. This dynamic approach allows the system to achieve high thermal resistance without increasing thickness, as the heating elements compensate for heat loss actively rather than relying solely on passive insulation thickness.
Solution Approach 2:
The patent changes the thermal state parameters by introducing controllable heating zones that can adjust temperature gradients within the panel. By modifying the thermal parameters dynamically through electrical heating, the system achieves superior insulation performance in a compact form factor.
2Temperature
If thicker insulation layers are used to increase thermal resistance, then the insulation performance improves, but the device complexity and space requirements increase
Solution Approach 1:
The patent merges the insulation function with active heating functionality by integrating heating elements directly within the panel structure. This combination allows a single integrated component to perform both insulation and active thermal management, reducing overall system complexity compared to separate thick insulation layers plus additional heating systems.
Solution Approach 2:
The insulation panel is designed with multi-functionality, serving both as thermal insulation and as an active heating system. The heating elements can be controlled to provide supplemental heating while the panel structure itself provides the insulation function, creating a universal thermal management solution.
3Temperature
If active heating elements are added to control thermal gradients, then thermal resistance can be increased, but energy consumption increases
Solution Approach 1:
The heating elements can be operated periodically or intermittently based on environmental conditions and thermal demands, rather than continuously. This periodic operation reduces overall energy consumption while maintaining effective thermal resistance when needed.
Solution Approach 2:
The heating elements are distributed locally within the insulation panel structure, allowing targeted heating only in specific zones where thermal gradients require adjustment. This localized approach minimizes energy consumption compared to uniform heating of the entire structure.
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 achieves significant energy savings and maintains high thermal resistance with a compact panel thickness, allowing independent control of thermal gradients and efficient heat management, even in varying environmental conditions, while keeping energy use low.
Implementation Method 1
By applying a controlled electrical power to the infrared heating film, infrared radiation is emitted between the structural layer and a radiant barrier layer
Implementation Method 2
The infrared radiation is mainly reflected by the radiant barrier layer whereby the radiation is directed towards the structural layer and will have a heating effect there
Implementation Method 3
By applying a controlled electrical power to the infrared heating film
Implementation Method 4
at least one insulation layer between said structural layers
Data Source
Figure 1~2
AI summary
A layered insulation element has a sandwich structure comprising at least two structural layers, at least one insulation layer between said structural layers, and a heating element in said sandwich structure. The heating element is connectable to a controller to control a thermal gradient through the layered insulation element. The layered insulation element furthermore comprises radiant barrier layers arranged on either side of the insulation layer. The heating element comprises an infrared heating film that is arranged between one of the structural layers and one of the radiant barrier layers.