Thermoactive Concrete Slab With Micro-Perforated Acoustic Absorber
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Thermoactive prefabricated concrete slabs used in commercial construction face challenges with slow temperature control and inadequate sound insulation, leading to inefficient energy transfer and high sound reflection.
Innovation Solution
Incorporating a multifunctional panel with micro-perforations into the concrete slab, which serves as both a sound absorber and a heat transfer element, allowing for faster temperature control and improved sound insulation by reducing sound reflections and enhancing energy transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If pipe registers are laid in the concrete material for thermoactive heating/cooling, then the ceiling provides both heating/cooling function and structural integration, but the temperature control becomes slow due to heat transfer requirements through concrete
Solution Approach 1:
The invention divides the ceiling structure into separate functional layers: an upper thermoactive concrete slab with pipe registers for heating/cooling, and a lower acoustic absorber layer with integrated air ducts. This segmentation allows the upper layer to provide thermal functions while the lower layer handles rapid air-based temperature control, resolving the contradiction between integrated heating/cooling and slow temperature response.
Solution Approach 2:
The invention introduces air ducts as an intermediary medium between the heat source and the room environment. Instead of relying solely on slow heat conduction through concrete, the system uses air circulation through the acoustic absorber layer to rapidly distribute thermal energy, acting as a mediator that accelerates temperature control while maintaining the integrated heating/cooling function.
2Strength
If the ceiling side is made as a hard shell for structural integrity, then the ceiling provides strength and durability, but sound insulation properties become insufficient due to high sound reflection
Solution Approach 1:
The invention merges two previously separate solutions into a single integrated acoustic absorber layer: the air duct system and the sound-absorbing material are combined in the lower layer. This unified structure simultaneously provides sound insulation by absorbing acoustic energy and enables rapid temperature control through air circulation, while the upper concrete shell maintains structural integrity.
Solution Approach 2:
The invention uses porous or fibrous acoustic absorber materials in the lower layer that effectively trap and dissipate sound energy, reducing sound reflection from the hard concrete ceiling. These porous materials convert acoustic energy into thermal energy through friction, significantly improving sound insulation while allowing air flow for temperature control.
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 enables rapid temperature control and significant improvement in sound insulation, allowing for efficient energy transfer and reduced noise levels in rooms, addressing the limitations of existing thermoactive panels.
Implementation Method 1
a micro-perforated metal plate is used as a functional plate. Part of the sound passes through the micro-perforations and hits the rear concrete surface
Implementation Method 2
an air duct is at least partially laid in the prefabricated panel above the lower concrete shell and which air duct is air-tightly connected to a recess in the lower concrete slab
Implementation Method 3
pipe registers have already been laid, through which either a cooled or a heated media flow can be passed
Data Source
AI summary
The slab has two concrete shells (17, 20) arranged parallel to each other, and a cavity (18) arranged between the concrete shells and filled with an insulating material (19). A pipeline register is arranged in the two concrete shells, and a half-open recess (22) is formed in one of the concrete shells and space-sidedly covered by a function plate (15) that is made of sound-absorbing material. The half-open recess disconnects a space-sided surface of the slab, and the function plate is designed as a micro-perforated metal plate. Acoustic absorbers are formed as an insulating body.