Corrugated Wall Insulation with Truncated Pyramid Foam
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Solution Overview
Problem
Existing insulation systems for corrugated walls in intermodal containers face challenges such as gaps between planar insulation panels and the corrugated surface, difficult installation, and issues with expansion and contraction differences between support elements and the metal surfaces.
Innovation Solution
The proposed insulation system includes foam insulation elements with a truncated pyramid cross-section that matches the corrugated wall recesses, embedded stud mounting elements to secure the insulation units and resist warping, and complementary tongues and grooves for alignment and stacking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If planar insulation panels are used on corrugated walls, then installation is simpler, but gaps form between panels and corrugated surface reducing insulation effectiveness
Solution Approach 1:
The insulation panel incorporates a corrugated inner surface that mirrors the wall's corrugation pattern, creating local geometric matching. This allows the panel to conform precisely to the corrugated surface while maintaining overall planarity for easy installation, eliminating gaps without complicating the installation process.
2Reliability
If fiberglass insulation is used, then insulation coverage is achieved, but the material is susceptible to water damage and mold when moisture is present
Solution Approach 1:
The insulation panel combines foam core material with a polyethylene outer layer. The foam provides insulation coverage while the polyethylene外层 provides water resistance and mold protection, creating a composite structure that delivers both insulation performance and moisture resistance.
3Ease of operation
If foam insulation is used, then ease of handling improves, but open foam allows moisture passage and moisture retention
Solution Approach 1:
The panel uses closed-cell foam as the core insulation material, which inherently resists moisture passage. The polyethylene outer layer provides an additional moisture barrier, creating a composite structure that maintains handling ease while preventing both moisture transmission and retention.
4Reliability
If conventional insulation systems are used, then insulation is provided, but installation of wiring, switches, and tubing becomes difficult
Solution Approach 1:
The panel incorporates integrated chase covers and pre-formed channels that segment the insulation space into accessible pathways. These built-in features provide dedicated routes for wiring, switches, and tubing without requiring difficult cutting or penetration of the insulation material, maintaining insulation integrity while simplifying component installation.
5Reliability
If extended panels with corrugated face are used, then gap filling is improved, but warping and failure occur due to different expansion/contraction rates between support elements and metal surfaces
Solution Approach 1:
The panel uses a polyethylene outer layer that acts as a flexible membrane, allowing the panel to accommodate differential thermal expansion and contraction between the foam core and metal support elements. This flexible envelope prevents warping and failure by absorbing dimensional changes without transmitting stress that would cause structural failure.
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 system provides superior insulation by filling gaps in corrugated walls, offering a planar outer surface for easy mounting, and creating effective water, thermal, and vapor control layers, while being easier to install and resistant to expansion and contraction issues.
Implementation Method 1
insulation system configured for use with corrugate walls
Implementation Method 2
made from a water impervious material such as closed-cell foam
Data Source
AI summary
An intermodal container includes a base, a roof, walls extending between the base and the roof, at least one of the walls having a corrugated surface. An insulation for the intermodal container includes a plurality of insulation units, each of the insulation units having a corrugated surface complementary to the corrugated surface of the intermodal container. Frist one of the insulating units has insulating material having a cross-section with a first face and an opposite second face, the first face including a longitudinally extending planar first central section and first and second longitudinally extending planar slanted sections on opposite sides of the first central section. The first and second slanted sections extend obliquely from the first central section toward the second face. A segmented support element is embedded in the insulation unit.