Insulative Building Frameworks for Reduced Thermal Bridging
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Solution Overview
Problem
Existing structural elements in construction, such as wood studs, allow for significant thermal bridging, leading to inefficient energy transfer and increased energy consumption in buildings, with industry-standard heat flow models underestimating this effect.
Innovation Solution
The development of structurally insulative frameworks with elongated frame members and connecting members that create indirect paths for heat flow, incorporating insulation materials to minimize direct conductive heat transfer and provide structural support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional wood studs are used for structural framing, then structural strength and ease of construction are achieved, but thermal bridging increases and energy efficiency deteriorates
Solution Approach 1:
The structural stud is segmented into multiple functional layers: an outer structural layer for strength, an inner insulative layer for thermal resistance, and intermediate transition layers. This segmentation allows each layer to perform its specific function optimally while working together as an integrated component.
Solution Approach 2:
The invention uses composite construction by combining different materials with complementary properties - structural materials (wood, metal, or composite) for strength and insulative materials (foam, fiber, or vacuum) for thermal resistance. The composite structure creates a stud that simultaneously provides both structural support and thermal insulation, eliminating the need for separate components.
2Loss of energy
If insulative material is added to reduce thermal bridging, then energy efficiency improves, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The structural and insulative functions are merged into a single integrated stud component. The insulative material is incorporated within the structural framework during manufacturing, creating a unified assembly that performs both structural support and thermal insulation simultaneously, eliminating the need for separate installation steps.
Solution Approach 2:
The insulative material is pre-installed and secured within the stud structure during the manufacturing process before the stud is installed in the building. This preliminary action ensures proper positioning and integration of insulation materials, simplifying on-site construction while maintaining energy efficiency.
3Stability of the object's composition
If joining members are extended diagonally to extend stud length, then structural stability improves, but thermal bridging increases due to alignment with wood grain
Solution Approach 1:
The insulative properties are enhanced at specific locations where thermal bridging occurs most severely - at the joining members and at stud edges. By concentrating insulative material in these critical areas, the design addresses thermal bridging where it matters most while maintaining overall structural integrity.
Solution Approach 2:
An insulative layer is introduced as an intermediary between the structural framing elements and the thermal energy flow. This intermediate insulative layer disrupts the direct thermal conduction path through the joining members and wood grain alignment, reducing thermal bridging while allowing structural functions to continue.
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 approach enhances the insulative properties of buildings, reducing thermal bridging and improving energy efficiency while maintaining structural integrity, and can also enhance sound and fire resistance.
Implementation Method 1
Wood conducts energy, mostly in the form of heat, in all directions. However, the conductivity along the grain of the wood is about 2.5 times greater than the conductivity in a direction across the grain.
Implementation Method 2
the structural member provides the resistance to energy flow which improves the overall insulative properties of the structure built with these structural members
Data Source
AI summary
A building framework is disclosed herein having a first structural member, a second structural member, and a third structural member disposed between the first and second structural members, a first web member connecting the first and third structural members in a spaced apart relationship, and a second web member connecting the second and third structural members in a spaced apart relationship. The first web member is positioned relative to the second web member such that the shortest distance between the first web member and second web member is greater than or equal to 5 times the thickness of the third structural member. Additional products, systems, and methods also are disclosed.