Electrochromic Glazing Thermal Management via Pane Inversion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electrochromic devices in triple glazing units face challenges with thermal performance, as the interior pane can heat up excessively, leading to device deterioration and high solar heat gain coefficients.
Innovation Solution
The implementation of a triple glazing unit design where the electrochemical device is coupled to the interior pane, with optimized spacing and gas filling between panes, along with the use of low-emissivity layers and control layers, to manage heat transfer and solar radiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the electrochemical device is placed on the exterior pane, then thermal transfer across the gas cavity is reduced, but the interior pane heats up excessively leading to device deterioration
Solution Approach 1:
The patent inverts the conventional placement strategy by moving the electrochemical device from the exterior pane to the interior pane position within the insulating unit. This reversal allows the device to benefit from the thermally protected environment created by the optimized gas cavity and low-emissivity layers, preventing excessive heating while maintaining thermal performance.
Solution Approach 2:
The patent introduces low-emissivity layers as intermediary elements between the electrochemical device and the thermal environment. These layers act as thermal mediators that reduce radiative heat transfer to the device, allowing it to operate reliably on the interior pane without excessive heating.
2Object-affected harmful factors
If the electrochemical device is placed on the exterior pane, then device protection from interior heat is improved, but solar heat gain coefficient increases leading to excessive heating
Solution Approach 1:
The patent applies local quality optimization by placing low-emissivity layers at specific positions within the insulating unit - on the exterior pane and/or interior pane surfaces. These localized treatments selectively reduce solar heat gain at critical interfaces while maintaining overall thermal performance and device protection.
Solution Approach 2:
The patent employs composite glazing structures combining multiple materials with different properties - the electrochemical device layer, low-emissivity coating layers, gas-filled cavities (argon/krypton), and pane materials. This composite approach allows simultaneous optimization of solar heat rejection, thermal insulation, and device thermal management.
3Loss of energy
If gas filling is optimized between panes, then thermal transfer is reduced, but device placement options are constrained
Solution Approach 1:
The patent optimizes the physical parameters of the gas filling - using high thermal conductivity gases like argon or krypton at controlled pressures and cavity thicknesses (6-20mm). These parameter optimizations create a thermally resistant environment that enables the electrochemical device to be successfully placed on the interior pane, transforming the thermal constraints into design advantages.
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 configuration effectively reduces the solar heat gain coefficient, maintains the functionality of the electrochemical device, and optimizes the energetic performance of the glazing unit.
Implementation Method 1
low-emissivity layers and control layers, to manage heat transfer and solar radiation
Implementation Method 2
Electrochromic (EC) devices employ materials capable of reversibly altering their optical properties following electrochemical oxidation and reduction in response to an applied potential
Implementation Method 3
The optical modulation is the result of the simultaneous insertion and extraction of electrons and charge compensating ions in the electrochemical material lattice
Implementation Method 4
The hermetically sealed cavity between the panes can reduce thermal transfer across the gas cavity
Implementation Method 5
The hermetically sealed cavity between the panes can reduce thermal transfer across the gas cavity
Data Source
AI summary
A triple glazing unit is disclosed. The triple glazing unit can include a first pane, a second pane, a third pane between the first pane and the second pane, an electrochemical device coupled to the third pane and between the third pane and the second pane, a first cavity between the first pane and the third pane, and a second cavity between the second pane and the third pane, wherein a distance between the first pane and the third pane is greater than a distance between the second pane and the third pane.