Multilayered Renovation Panel with Ventilation Channels
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Solution Overview
Problem
Existing renovation building elements often compromise between thermal insulation and ventilation, leading to moisture issues in old buildings, particularly in facades of office buildings, where effective moisture management and thermal performance are simultaneously required.
Innovation Solution
A multilayered renovation building element featuring a core of thermal insulation material with surface panels on both sides, incorporating a water vapour-permeable membrane and ventilation channels that allow moisture to escape through the membrane and insulation into a ventilation channel, which directs moisture to the outside air, while maintaining high thermal insulation capability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If thermal insulation material is attached directly to the substructure, then thermal insulation performance is improved, but moisture accumulation occurs and ventilation is insufficient
Solution Approach 1:
The renovation element is divided into distinct functional layers: an outer surface panel, a thermal insulation core, and an inner surface panel with ventilation channels. This segmentation allows each layer to perform its specific function - the insulation core provides thermal protection while the ventilation channels in the inner panel enable moisture evacuation, resolving the contradiction between insulation performance and moisture management.
Solution Approach 2:
The ventilation channels act as an intermediary pathway between the thermal insulation material and the external environment. These channels allow moisture vapor to traverse through the insulation layer and escape to the outside, preventing moisture accumulation while maintaining the thermal insulation integrity. The fastening strip also serves as an intermediary structure that secures the insulation to the substructure while allowing ventilation access.
2Object-generated harmful factors
If ventilation channels are added to allow moisture escape, then moisture management is improved, but thermal insulation capability deteriorates
Solution Approach 1:
The ventilation channels are localized to specific regions within the inner surface panel rather than creating large open spaces throughout the entire structure. The channels are positioned and sized to provide adequate moisture evacuation pathways while minimizing their impact on the overall thermal insulation performance. The fastening strip also provides localized support that maintains insulation contact with the substructure in critical areas.
Solution Approach 2:
The renovation element combines multiple materials with complementary properties: the thermal insulation material provides thermal resistance, the water vapour-permeable membrane allows moisture transmission while maintaining thermal barrier function, and the structural components provide mechanical support. This composite structure achieves both effective ventilation and high thermal insulation capability simultaneously.
3Object-generated harmful factors
If a water vapour-permeable membrane is used, then moisture can escape through the membrane, but the membrane adds complexity to the structure
Solution Approach 1:
The water vapour-permeable membrane is integrated into the inner surface panel structure, merging the moisture management function with the structural panel. The ventilation channels are formed as part of the panel geometry rather than as separate components. This merging reduces the number of discrete parts and simplifies installation while maintaining effective moisture escape capability through the membrane and channels.
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 solution effectively manages moisture by allowing it to escape through the membrane and insulation, ensuring the building dries while maintaining high thermal insulation, even in exceptionally wet structures, by using a temporary ventilation gap that can be closed once the structure is dry.
Implementation Method 1
a water vapour-permeable membrane (6) fastened to the outer surface of the inner surface panel (2b)
Implementation Method 2
a core part (2c) of thermal insulation material
Data Source
Figure 1~2
Figure 3
AI summary
The invention relates to a multilayered renovation building element (2) having a core part (2c) of thermal insulation material and surface panels (2a, 2b) covering it on both sides, the surface panels having a tongue (5) on one longitudinal edge and a groove (4) on the opposite longitudinal edge. In the inner surface panel of the renovation building element is formed at least one opening (7), which is covered by a water vapour-permeable membrane material (6). In the thermal insulation material of the core part (2c) of the renovation building element (2) is formed at least one ventilation channel (9), which opens directly or via a separate connecting channel to the outside air.