Composite Liner Metallic Section Heat Dissipation
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Solution Overview
Problem
Existing pressure vessels do not effectively dissipate heat from the internal space to the outside, leading to increased gas temperature during filling due to inadequate heat dissipation considerations.
Innovation Solution
A pressure vessel design featuring a composite liner made of stainless steel and nylon, with a metallic ferrule and end boss made of aluminum, promoting heat dissipation through high heat conductivity paths, including a protrusion and flange configuration that increases the exposed surface area for heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional liner design without metallic section is used, then manufacturing simplicity is maintained, but heat dissipation from internal space is insufficient
Solution Approach 1:
The liner is constructed as a composite structure combining a resin base material with a metallic section (stainless steel or aluminum alloy). The metallic section includes a first part contacting the ferrule and a second part exposed in the internal space, creating thermal conduction paths from the internal space through the metal to the ferrule, thereby improving heat dissipation while maintaining relatively simple manufacturing processes.
Solution Approach 2:
The metallic section is strategically positioned within the liner structure - with a first part contacting the ferrule for heat conduction to the exterior and a second part exposed in the internal space to contact the stored gas. This localized metallic reinforcement provides targeted thermal management where needed without requiring the entire liner to be metallic, thus balancing heat dissipation performance with manufacturing simplicity.
2Temperature
If heat dissipation structures are added to the liner, then heat dissipation efficiency is improved, but manufacturing complexity increases
Solution Approach 1:
The liner integrates a metallic section (stainless steel or aluminum alloy) within a resin composite structure. The metallic section forms thermal conduction paths from the internal space through the ferrule to the exterior, improving heat dissipation during gas filling operations while maintaining manufacturing processes that are relatively straightforward through composite material fabrication techniques.
Solution Approach 2:
The metallic section is merged with the ferrule structure, where the first part of the metallic section contacts the ferrule and the second part is exposed in the internal space. This integration creates efficient thermal conduction paths without requiring separate heat dissipation components, thereby improving heat dissipation while avoiding excessive manufacturing complexity.
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
Efficient heat dissipation from the internal space to the outside reduces the time and energy required for filling high-pressure fluids like hydrogen, enhancing the performance and safety of pressure vessels, such as those used in fuel cell vehicles.
Implementation Method 1
the metallic section includes a first part contacting the ferrule and a second part exposed in the internal space... promoting heat dissipation from the internal space to the outside
Data Source
AI summary
A pressure vessel comprising: a liner made from a composite material including a resin section made from resin and a metallic section made from metal, the liner forming internal space for storage of a fluid; and a metallic ferrule attached to an end portion of the liner and including a part exposed to the outside, wherein the metallic section includes a first part contacting the ferrule and a second part exposed in the internal space.