Fire Protection Housing With Lightweight Concrete Heat Shield
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Solution Overview
Problem
Existing fire protection housings face challenges in balancing stability, weight, and heat protection while maintaining the functionality of electronic devices during fires, as thicker panels provide better insulation but increase weight and space requirements, and materials used may not efficiently manage heat and water vapor.
Innovation Solution
A fire protection housing design featuring a wall with two panels held at a distance by a frame, where the outer panel is made of lightweight concrete with bound water and high thermal insulation properties, and the inner panel includes a reflective layer to prevent heat transfer, with a gap between them that acts as an insulating layer to hinder heat conduction and allow water vapor release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If thicker panels are used to improve heat insulation, then heat protection performance is improved, but weight and space requirements increase
Solution Approach 1:
The wall is constructed as a composite structure with an outer panel containing bound water (such as gypsum or lightweight concrete), an intermediate cavity, and an inner panel. This composite design combines materials with different thermal properties to achieve superior heat protection without requiring excessive thickness or weight. The bound water material releases water vapor during fire to cool the structure, while the cavity provides thermal insulation.
Solution Approach 2:
The wall is divided into multiple segments: an outer panel, an intermediate cavity, and an inner panel. This segmentation allows each component to perform its specific function - the outer panel releases bound water vapor for cooling, the cavity provides insulation space, and the inner panel protects the interior. This segmented approach achieves better heat protection than a single solid panel of equivalent weight.
2Temperature
If thicker panels are used to improve heat insulation, then heat protection performance is improved, but space requirements increase
Solution Approach 1:
The composite wall structure with bound water-containing material and cavity achieves high heat protection performance in a compact configuration. The bound water material provides active cooling through vapor release, allowing thinner overall construction compared to passive insulation materials alone.
Solution Approach 2:
The bound water in the outer panel undergoes phase transition from liquid to vapor during fire exposure, absorbing heat in the process. This phase change mechanism provides active heat protection that is more space-efficient than relying solely on thermal insulation thickness.
3Strength
If materials with high thermal conductivity are used, then structural stability is improved, but heat protection performance deteriorates
Solution Approach 1:
The wall uses a composite of materials with different properties: the outer panel contains bound water for active cooling, the cavity provides thermal break, and the inner panel ensures structural integrity. This composite approach balances thermal performance and structural stability better than any single material could achieve alone.
Solution Approach 2:
The intermediate cavity acts as a thermal mediator or break between the outer and inner panels. It prevents direct heat conduction through the wall structure, allowing the use of more structurally stable materials in the panels without compromising overall heat protection performance.
4Device complexity
If a single panel design is used, then device complexity is reduced, but heat protection performance deteriorates
Solution Approach 1:
The wall is segmented into functionally distinct components: outer panel with bound water, intermediate cavity, and inner panel. Each segment performs a specific heat protection function, and together they achieve superior performance without excessive complexity. The segmentation allows for modular construction and maintenance.
Solution Approach 2:
The composite three-layer wall structure combines materials and mechanisms that work synergistically for heat protection. The bound water material, cavity, and inner panel together provide active cooling, insulation, and structural protection - a performance level unachievable with a single homogeneous panel.
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 design effectively maintains interior temperatures below a critical limit during fires by releasing water vapor and providing efficient heat dissipation, ensuring electronic devices remain functional for a longer period while minimizing weight and space requirements.
Implementation Method 1
The outer panel (11) comprises a material containing bound water, in particular a lightweight concrete panel... releases water at high temperatures, thereby cooling the enclosure
Implementation Method 2
Gypsum contains bound water, which is released at high temperatures, thus producing a cooling effect
Implementation Method 3
These panels can be held apart by a frame, defining an intermediate space. The air, or more generally the gas, in the space between the panels acts as an insulating layer, effectively impeding heat flow between the exterior and interior spaces
Implementation Method 4
The inner panel includes a reflective layer to prevent heat transfer
Data Source
Figure 1~2
Figure 3~6
Figure 7~10
AI summary
The fire-resistant enclosure comprises a wall that encloses an interior space and separates it from an exterior space. At least one section of the wall includes an outer panel (11) and an inner panel (13) to impede heat transfer from the exterior space to the interior space. The outer panel (11) comprises a material containing bound water in the form of glass fiber reinforced lightweight concrete.