Hollow Chamber Profile Low-Emissivity Coating Thermal Insulation
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Solution Overview
Problem
Conventional hollow chamber profiles for windows and doors, primarily made of rigid PVC, have reached thermal insulation limits with increasing numbers of chambers, resulting in only slight further improvements in thermal performance.
Innovation Solution
Incorporating an insulation element with a low-emissivity coating or film, preferably resting against two opposite inner walls of the main hollow chamber, significantly reduces heat passage by reflecting thermal radiation effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the number of hollow chambers is increased in the direction of heat transfer, then thermal insulation is improved, but the improvement becomes marginal and reaches its limits
Solution Approach 1:
The patent applies local quality by introducing a low-emissivity coating specifically on the inner surface of the hollow chamber that faces the interior space. This localized modification creates a thermal radiation barrier at the most critical interface, improving thermal insulation without requiring increases in the overall chamber structure or complexity of the profile design.
2Loss of energy
If conventional hollow chamber profiles are used with multiple chambers, then thermal insulation is achieved, but further improvement is only possible with slight gains
Solution Approach 1:
The patent employs composite materials by combining the conventional plastic hollow chamber profile with a low-emissivity coating layer. This composite structure integrates the structural advantages of the plastic profile with the thermal radiation blocking properties of the low-e coating, achieving significant heat transfer reduction while maintaining compatibility with existing extrusion manufacturing processes.
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 thermal insulation properties of the hollow chamber profiles, contributing to improved energy efficiency and reduced heat transfer without compromising structural stability or production processes.
Implementation Method 1
the surface of which is provided at least partially with a low-emissivity coating and/or a low-emissivity film... exhibit high transmittance in the visible region of the electromagnetic spectrum and, consequently, low emissivity in the infrared spectral range... act as good reflectors of thermal radiation at room temperature
Data Source
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AI summary
The present invention relates to a hollow chamber profile (1) for a window or door made of a plastic, wherein the plastic forms the inner walls (3, 3', 3", 3'''') and the outer walls (4, 4', 4", 4'''') of the hollow chamber profile (1), wherein the inner walls (3, 3', 3") and the outer walls (4, 4', 4", 4''') surround the hollow chambers (2, 2', 2", 2''') of the hollow chamber profile (1), wherein at least one insulating element (12) is inserted into at least one of the hollow chambers (2, 2', 2", 2''') of the hollow chamber profile (1), wherein the hollow chamber profile (1) is characterized according to the invention in that the surface of the at least one insulating element (12) is provided at least in certain areas with a low-emissivity coating and/or a low-emissivity film (13, 13').Furthermore, the present invention relates to a frame assembly for a window or door, comprising at least one profile section of a hollow chamber profile (1) according to the invention.