Cryogenic Storage Vessel Discharge Pipe Thermal Conductive Layer
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Solution Overview
Problem
Conventional hydrogen fuel storage vessels experience increased vaporization loss due to ineffective heat insulation, as the insulator between the inner and outer containers fails to block heat transfer efficiently, leading to higher hydrogen loss rates.
Innovation Solution
A storage vessel design featuring an inner container with a thermally conductive layer on the discharge pipe to dissipate heat, a heat insulating member between the containers, and an optional cryogenic jacket to utilize auxiliary materials for reducing vaporization heat, thereby enhancing heat insulation and reducing vaporization rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a conventional insulator is placed between the inner and outer containers, then the structure provides basic insulation, but the heat transfer is not effectively blocked and vaporization loss increases
Solution Approach 1:
The discharge pipe is equipped with a thermally conductive layer at its outer surface, creating a localized heat dissipation path. This allows different parts of the system to have different thermal properties: the insulator blocks general heat transfer while the conductive layer on the discharge pipe actively dissipates heat that reaches it, preventing vaporization at the discharge point
Solution Approach 2:
The thermally conductive layer acts as an intermediary between the discharge pipe and the surrounding environment. It provides a dedicated pathway for heat to be conducted away from the discharge pipe surface, mediating the heat transfer process to prevent direct heating of the stored material
2Loss of substance
If the heat conduction area of the discharge pipe is increased, then the vaporization rate is reduced, but the device complexity increases
Solution Approach 1:
The discharge pipe is constructed as a composite structure with an inner pipe for material flow and an outer thermally conductive layer for heat dissipation. This composite design combines the functionality of material containment with active thermal management, reducing vaporization without requiring separate complex cooling systems
Solution Approach 2:
The discharge pipe serves multiple functions: it acts as both the containment boundary for the stored material and the heat dissipation pathway. The thermally conductive layer integrates heat dissipation functionality directly into the discharge pipe structure, eliminating the need for separate insulation and cooling components
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 effectively blocks heat transfer from the outer container to the inner container, significantly reducing vaporization and loss rates of extremely low temperature materials like liquefied hydrogen, with a demonstrated reduction in vaporization rate of up to 23.9% and improved heat insulation performance.
Implementation Method 1
a heat insulating member installed in a vacuum region between the inner container and the outer container to block a heat from being transferred to the inner container
Implementation Method 2
at an outer surface of the discharge pipe, a thermally conductive layer coated with a highly conductive material having high thermal conductivity is formed to easily discharge a heat permeated between the container and the outer container to the outside through the discharge pipe
Implementation Method 3
an outer container installed at a separated space at the outside of the inner container and having a vacuum port configured to enable the separated space to be a vacuum state
Data Source
AI summary
A storage vessel for an extremely low temperature material for reducing a vaporization rate by forming a plating layer at an outer surface of a discharge pipe thereof is provided. The storage vessel for an extremely low temperature material includes an inner container configured to store an extremely low temperature material of a liquefied state through a supply pipe in an inner receiving space; an outer container installed at a separated space at the outside of the inner container and having a vacuum port configured to enable the separated space to be a vacuum state; and a heat insulating member installed in a vacuum region between the inner container and the outer container to block a heat from being transferred to the inner container, wherein a discharge pipe connected to an outlet of the inner container and configured to vaporize and discharge an extremely low temperature material is disposed between the inner container and the outer container, and at an outer surface of the discharge pipe, a thermally conductive layer coated with a highly conductive material having high thermal conductivity is formed. By a such a configuration, a heat applied to an outer container can be effectively blocked from being transferred to an inner container for storing an extremely low temperature material, and by reducing a vaporization rate of the extremely low temperature material by increasing a heat transfer area of a discharge pipe, a loss rate according to vaporization of the extremely low temperature material can be reduced and a separate cheap auxiliary extremely low temperature material in addition to the extremely low temperature material can be subsidiarily used for fuel or industrial use.