Heat-Reflecting Mats for Reducing U-Values in Existing Buildings
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Solution Overview
Problem
Many buildings, such as steel, aluminum steel, wooden truss, and scaffolding structures, suffer from high U-values due to poor thermal insulation, leading to excessive heat loss in cold weather and heat gain in warm weather, limiting their usage and comfort.
Innovation Solution
The use of tensile heat reflection mats with a sandwich structure composed of textile-reinforced plastic film, multi-layer heat-reflective layers, and aluminum foils, connected via piping or profiles, to create a thermal insulation system that reflects radiant heat and reduces heat transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If traditional building structures (steel, aluminum steel, wooden truss, scaffolding) are used without additional insulation, then the construction is simple and cost-effective, but the U-value is high resulting in poor thermal insulation
Solution Approach 1:
The building envelope is segmented into modular insulation panels that can be individually installed on different sections of the structure. Each panel contains insulated hollow chambers that can be independently manufactured and assembled, allowing progressive insulation without requiring complete structural modification.
Solution Approach 2:
The insulation system uses nested hollow chambers within panels, where smaller insulated cavities are positioned within larger structural frameworks. This nested arrangement maximizes thermal insulation volume while minimizing the overall increase in structural footprint and complexity.
2Loss of energy
If heavy insulation materials are used to reduce U-value, then thermal insulation improves, but the weight of the building structure increases
Solution Approach 1:
The insulation panels incorporate hollow porous chambers and air-filled cavities within their structure. These porous spaces provide thermal insulation by trapping air pockets that resist heat transfer, achieving high insulation performance with minimal material density and overall panel weight.
Solution Approach 2:
The insulation system combines multiple materials with complementary properties: lightweight structural frameworks, insulating foam or fiber materials, and protective outer layers. This composite approach achieves superior thermal insulation per unit weight compared to single-material solutions.
3Loss of energy
If conventional insulation methods are applied to existing buildings, then thermal performance improves, but installation time and complexity increase
Solution Approach 1:
The insulation panels are pre-assembled with integrated hollow chambers, insulation materials, and connecting mechanisms in the factory before delivery to the construction site. This preliminary preparation eliminates time-consuming on-site insulation installation and reduces the need for complex field assembly operations.
Solution Approach 2:
The insulation system incorporates flexible connecting elements and adjustable mounting mechanisms that allow rapid adaptation to different building geometries and existing structures. This dynamic design enables quick installation without requiring precise pre-measurement or custom fabrication for each application.
4Loss of energy
If rigid insulation structures are used to achieve low U-value, then thermal insulation performance improves, but adaptability to different building types decreases
Solution Approach 1:
The insulation panel design incorporates universal mounting interfaces and standardized dimensions that can be adapted to various building types including steel structures, aluminum steel buildings, wooden truss halls, and scaffolding. The same basic panel system serves multiple building applications through configurable assembly patterns and attachment methods.
Solution Approach 2:
The insulation system transitions from two-dimensional flat panels to three-dimensional hollow chamber structures that can be configured in various spatial arrangements. This dimensional flexibility allows the same insulation technology to accommodate different building geometries, roof pitches, and structural configurations across diverse building types.
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
Significantly reduces the U-value, enhancing thermal insulation, improving comfort and expanding the usage of buildings by effectively managing temperature extremes, while being lightweight and easy to install and reuse.
Implementation Method 1
acts for thermal insulation or as a heat reflection mat
Implementation Method 2
heat-reflective material in the form of a hybrid layer with multi-layer heat-reflective layers
Implementation Method 3
two layers of a plastic film with small air bubbles contained therein are arranged between two to five aluminum foils to form absorption-reducing air cushions
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The heat-reflective mat (8) is used for equipping air-supported structures, timber-framed halls, steel and aluminum-steel structures, scaffolding structures, marquees, and similar buildings. It can be used externally or internally and consists of a sandwich construction of at least two layers of textile-reinforced plastic film (12). A heat-reflective layer (13) is inserted between the layers. At least two opposing edges are equipped with fasteners for tensile-force attachment, preferably in the form of welded-in keder profiles (5).