Vacuum Insulated Panel Edge Seals for Condensation Resistance
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Solution Overview
Problem
Conventional vacuum insulating panels suffer from condensation buildup due to poor thermal characteristics and low condensation resistance, leading to potential decay and damage to the insulating units and building components.
Innovation Solution
The vacuum insulating panels are improved by configuring components such as edge seal materials and dimensions, coupled with a low center of glass u-factor, to enhance thermal performance and increase the Condensation Resistance Factor for glass (CRFG) to at least 73, thereby reducing condensation accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional vacuum insulating panels are used, then insulating properties are provided through vacuum gap, but condensation buildup occurs due to poor thermal characteristics
Solution Approach 1:
The patent changes the thermal parameters of the edge seal material to improve thermal performance. Specifically, it uses materials with low thermal conductivity and optimizes the thickness and geometry of the edge seal to reduce heat transfer at the critical edge region, thereby preventing condensation buildup while maintaining vacuum insulation properties
Solution Approach 2:
The patent employs composite edge seal structures combining multiple materials with different thermal properties. The edge seal may include layers of different polymers or composites designed to minimize thermal bridging between the interior and exterior environments, thus improving condensation resistance
2Reliability
If edge seal material and dimensions are optimized to improve thermal performance, then CRFG increases to at least 73, but device complexity increases
Solution Approach 1:
The patent applies local quality optimization by focusing thermal performance improvements specifically at the edge seal region where heat transfer is most critical. Rather than redesigning the entire panel, it optimizes the local geometry, material composition, and thickness of the edge seal to achieve CRFG ≥ 73 while minimizing overall device complexity
3Loss of energy
If vacuum pressure is maintained to reduce conduction and convection, then insulating properties improve, but manufacturing complexity increases
Solution Approach 1:
The patent employs a disposable desiccant pack placed inside the vacuum cavity to maintain vacuum conditions. This simple, inexpensive, single-use component absorbs residual moisture and maintains the vacuum without requiring complex active pumping systems, thus reducing heat transfer while keeping the device simple
Solution Approach 2:
The vacuum system is designed to be self-maintaining through passive mechanisms. The desiccant pack automatically absorbs moisture, and the hermetic seal maintains vacuum without active intervention, allowing the panel to self-regulate its internal environment and maintain insulating properties
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 improved panels achieve enhanced condensation resistance, thermal performance, and moisture resistance, maintaining stability under asymmetric thermal conditions.
Implementation Method 1
Providing a vacuum in the space between the substrates reduces conduction and convection heat transport, and thus provides insulating properties
Implementation Method 2
reducing radiative energy with a low-emissivity (low-E) coating provided on one of the substrates
Data Source
AI summary
A vacuum insulating panel may include: a first substrate; a second substrate; a plurality of spacers provided in a gap between at least the first and second substrates, wherein the gap is at pressure less than atmospheric pressure; and a seal (e.g., edge seal) provided at least partially between at least the first and second glass substrates. Elements such as edge seal materials and/or dimensions are configured to improve thermal performance and to increase the Condensation Resistance Factor for glass (CRFG) for the panel, so as to provide for a panel with a reduced likelihood to accumulate condensation in the field.