Expanded Graphite Acoustic Ceiling Panels for Heat-Conductive Coverage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing sound-absorbing ceiling and wall elements used in concrete core activation systems are inefficient in heat transfer, leading to reduced air conditioning efficiency due to thermal insulation, and partial coverage compromises sound absorption.
Innovation Solution
A ceiling or wall element with a sound-absorbing core material made of binder-free expanded graphite, which can be mixed with plastics, is used in conjunction with a frame for direct thermal contact, enhancing both sound absorption and heat transfer by providing a high thermal conductivity and sound-absorbing surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If sound-absorbing ceiling or wall elements are attached to ceilings and walls to increase sound absorption, then sound absorption is improved, but heat transfer deteriorates because the sound-absorbing elements thermally insulate the concrete core
Solution Approach 1:
The invention uses a composite material consisting of binder-free expanded graphite as the core material. This material combines both sound-absorbing properties and high thermal conductivity, allowing the ceiling or wall element to simultaneously improve sound absorption while maintaining efficient heat transfer from the concrete core to the room.
Solution Approach 2:
The invention changes the material parameter from conventional sound-absorbing materials (mineral wool, foam) to binder-free expanded graphite, which has fundamentally different thermal properties. The graphite material maintains high thermal conductivity while providing sound absorption, thereby changing the thermal insulation parameter from high to low, enabling simultaneous sound absorption and heat transfer.
2Loss of energy
If only part of the total area of walls or ceiling is covered with sound-absorbing elements to ensure sufficient heat transfer, then heat transfer is maintained, but sound absorption deteriorates
Solution Approach 1:
The use of binder-free expanded graphite as a composite material allows the entire ceiling or wall area to be covered with sound-absorbing elements that simultaneously conduct heat efficiently. This eliminates the need to compromise between coverage area and heat transfer, as the material itself provides both functions.
Solution Approach 2:
The binder-free expanded graphite material serves multiple functions simultaneously: it provides sound absorption across a wide frequency range and maintains high thermal conductivity for efficient heat transfer. This multi-functionality allows full area coverage without sacrificing either sound absorption or heat transfer performance.
3Object-affected harmful factors
If conventional sound-absorbing materials are used in concrete core activation systems, then sound absorption is achieved, but thermal conductivity is insufficient leading to reduced air conditioning efficiency
Solution Approach 1:
The invention replaces conventional sound-absorbing materials with binder-free expanded graphite, a composite material that inherently possesses both sound-absorbing characteristics and high thermal conductivity. This material substitution resolves the contradiction by providing both required functions simultaneously.
Solution Approach 2:
The invention fundamentally changes the thermal conductivity parameter of the sound-absorbing material from low (conventional materials) to high (expanded graphite). This parameter change enables the material to conduct heat effectively while maintaining sound absorption, thereby improving air conditioning efficiency in concrete core activation systems.
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 solution achieves effective sound absorption across a wide frequency range and efficient heat transfer, allowing for comprehensive coverage without impairing sound or thermal performance, thus enabling active air conditioning while maintaining sound absorption.
Implementation Method 1
a sound-absorbing core material, the core material containing binder-free expanded graphite or consisting entirely of binder-free expanded graphite
Implementation Method 2
the core material in a the ceiling or the wall attachable frame is arranged... providing a high thermal conductivity and sound-absorbing surface
Data Source
AI summary
The invention relates to a ceiling or wall element (10) for fixing to a ceiling (5) or a wall, comprising a sound-absorbing core material. According to the invention, the core material (1) contains expanded graphite or consists of expanded graphite.