Curved Vacuum Insulation Panels for Building Retrofit
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Solution Overview
Problem
Existing thermal and acoustical insulation technologies, such as vacuum insulation panels, face challenges in maintaining a hard vacuum effectively, especially in flat panels, which affects their insulating efficiency and durability, particularly at the edges, leading to suboptimal performance compared to cylindrical designs like thermos bottles.
Innovation Solution
The development of a system that integrates vacuum insulation panels with a hard vacuum system within building structures, using airtight chambers connected to a vacuum pump, allowing for the creation of a consistent and sustained vacuum environment across multiple panels, enhancing thermal and acoustical insulation while passing fire tests and maintaining structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If vacuum insulation panels are used for thermal insulation, then heat transfer is reduced, but maintaining a hard vacuum is difficult especially at edges
Solution Approach 1:
The patent applies curvature to the vacuum chamber design, transitioning from flat panels to curved surfaces. This curvature strengthens the structural integrity of the vacuum chamber, particularly at edge regions, making it easier to maintain a hard vacuum. The curved geometry distributes stress more effectively compared to flat surfaces, resolving the contradiction between achieving low heat transfer and maintaining reliable vacuum conditions.
2Ease of manufacture
If flat vacuum panels are used, then installation is simplified, but vacuum maintenance and insulating efficiency deteriorate
Solution Approach 1:
The patent employs curved vacuum chambers instead of flat panels. This curvature provides structural strength that enables the maintenance of hard vacuums while still allowing for practical installation. The curved design inherently resists collapse and maintains vacuum integrity better than flat surfaces, thus preserving insulating efficiency without completely sacrificing ease of installation.
Solution Approach 2:
The patent incorporates a vacuum pump system connected to the curved vacuum chamber to actively maintain the hard vacuum condition. This pneumatic system compensates for any potential vacuum degradation, ensuring consistent insulating performance. The combination of curved geometry and active vacuum management resolves the contradiction between ease of installation and reliable insulating efficiency.
3Reliability
If cylindrical designs like thermos bottles are used, then vacuum maintenance is improved, but adaptability to building structures is reduced
Solution Approach 1:
The patent divides the building structure into multiple segments, each containing a curved vacuum chamber. This segmentation allows the curved vacuum chambers to be installed in various locations and orientations within the building, adapting to different structural configurations. Each segment maintains its own hard vacuum independently, preserving vacuum reliability while providing the versatility needed for building integration.
Solution Approach 2:
The patent transitions from two-dimensional flat panels to three-dimensional curved vacuum chambers. This dimensional change provides greater design flexibility, allowing the vacuum insulation system to conform to complex building geometries while maintaining the structural integrity needed for hard vacuum maintenance. The curved surfaces can be oriented and positioned to match various architectural requirements.
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 significantly reduces heat transfer and noise, providing superior insulation with R-values up to 50, while ensuring the panels can withstand high temperatures and meet fire safety standards, making them suitable for various applications including buildings and aircraft.
Implementation Method 1
A vacuum slows down heat transfer by two of the three modes of heat transfer: conduction, convection, and radiation. More specifically, if we remove most of the air molecules from a space, as occurs when we draw a vacuum, we largely eliminate the first two of those heat transfer mechanisms.
Implementation Method 2
Only radiant heat flow occurs to a significant extent in a vacuum, because radiation is not dependent on air molecules. Low thermal emissivity is important in vacuum panels.
Data Source
AI summary
Method for producing an adjustable vacuum thermal and acoustical insulation panels comprise steps of manufacturing first and second vacuum telescoping insulating panels. The process of making a vacuum thermal and acoustical insulation system for modifying space intended to use for existing thermal insulation in some embodiments is comprised of the steps of providing air impermissibility for an existing space by covering internal surfaces of studs, joist, rafters and walls and space between them with sealant and coating and lining all these surfaces.