Window Frame Thermal Dampening with Discrete Air Cavities
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Solution Overview
Problem
Existing window systems, particularly those with metal frames, suffer from reduced thermal efficiency due to thermal energy conductivity, necessitating improved methods to control heat transfer while maintaining aesthetic design objectives.
Innovation Solution
Incorporation of a thermal dampening device within the air pocket between the glass stop and the frame, utilizing a base and fins made of thermoplastic polymer, which breaks up the air pocket into discrete cavities to reduce thermal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If metal frames are used in window systems, then structural strength and aesthetic design objectives are achieved, but thermal efficiency deteriorates due to thermal energy conduction
Solution Approach 1:
A thermal dampening device is introduced as an intermediary element between the metal frame and the glass stop. This device includes a base attached to the frame and fins that extend into the air pocket, creating thermal resistance and reducing heat conduction from the metal frame while maintaining structural integrity and aesthetic appearance.
2Loss of energy
If a thermal dampening device is added to reduce thermal transmission, then thermal efficiency is improved, but device complexity increases
Solution Approach 1:
The thermal dampening device is segmented into distinct functional components: a base portion for attachment to the frame and multiple fins for creating discrete cavities in the air pocket. This segmentation allows each component to perform its specific function while keeping the overall design relatively simple and manufacturable.
Solution Approach 2:
The thermal dampening device utilizes the three-dimensional space within the air pocket by extending fins in multiple directions from the base. This dimensional approach maximizes thermal resistance and structural reinforcement without significantly increasing the overall complexity of the window system.
3Loss of energy
If the air pocket is broken up into discrete cavities, then convective heat transfer is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The air pocket is segmented into discrete cavities by extending fins from the thermal dampening device base. These fins create separate air chambers that disrupt convective heat transfer patterns. The segmentation approach is effective at reducing convection while remaining compatible with standard manufacturing processes for the frame and glass stop components.
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 thermal dampening device effectively mitigates convective heat transfer, enhances thermal performance, and reinforces the glass stop, while being adaptable to various designs and configurations.
Implementation Method 1
the thermal dampening device effectively mitigates convective heat transfer, enhances thermal performance
Implementation Method 2
reducing convective heat transfer through the air pocket with the one or more discrete cavities
Implementation Method 3
reducing thermal transmission through the air pocket with the thermal dampening device
Data Source
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AI summary
A window system includes a frame, a glazing assembly held within the frame and including a glass stop attachable to the frame, wherein attaching the glass stop to the frame defines an air pocket between the glass stop and the frame, and a thermal dampening device positioned within the air pocket and defining one or more discrete cavities.