Angled Gas Jet Nozzle for Uniform Tank Temperature
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Solution Overview
Problem
High-pressure gas tanks for motor vehicles face challenges in achieving uniform temperature distribution during filling, leading to temperature differences that can cause material stress and inefficient fueling processes.
Innovation Solution
A high-pressure gas tank design and filling method where a gas jet is directed at an angle into the tank, creating swirls for improved mixing, with an inflow nozzle and adjustable nozzle cap to optimize the angle of incidence, ensuring uniform temperature distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If gas is filled into the tank at high speed, then the fueling speed is increased, but temperature differences within the tank increase causing material stress
Solution Approach 1:
The gas jet is directed at an angle (approximately 45 degrees) relative to the tank axis rather than axially or radially. This asymmetric injection angle creates a diagonal flow path that generates rotational motion and swirls within the tank, promoting uniform mixing and temperature distribution while maintaining high fueling speeds
Solution Approach 2:
The angled gas jet creates rotational motion and swirls in the gas volume, generating a form of mechanical mixing that distributes temperature uniformly throughout the tank. This rotational flow pattern prevents localized heating and ensures even temperature distribution during high-speed filling
2Device complexity
If gas jet enters the tank axially or radially, then the filling process is simple, but hot spots form and temperature distribution becomes non-uniform
Solution Approach 1:
The gas jet is directed at an angle (approximately 45 degrees) relative to the tank axis rather than axially or radially. This asymmetric injection angle creates a diagonal flow path that generates rotational motion and swirls within the tank, promoting uniform mixing and temperature distribution while maintaining high fueling speeds
Solution Approach 2:
The gas injection moves from conventional one-dimensional axial or radial approaches to a two-dimensional angled approach. This dimensional change creates a diagonal flow path that naturally generates rotational motion and improves mixing efficiency, distributing temperature more uniformly throughout the tank volume
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 achieves a significantly reduced standard deviation of temperature within the tank, minimizing material stress and optimizing the fueling process by maintaining a uniform average temperature, thus ensuring efficient and safe filling.
Implementation Method 1
The gas jet reaches the mentioned inner wall of the interior space and is deflected therefrom so as to generate swirls in the interior of the gas tank. The swirls provide for a continuous mixing of the gas volume present in the gas tank, whereby the temperature distribution within the gas volume is considerably improved.
Data Source
AI summary
In a high-pressure gas tank for motor vehicles and a method for filling a high-pressure gas tank which has an interior space for holding gas and a filling region with an inflow opening which leads to the interior space, the filling region is formed so as to direct a gas jet which enters through the inflow opening at an angle φ upwardly with respect to a central horizontal longitudinal axis of the interior space toward a top wall of the tank where the gas jet is deflected toward the end of the tank opposite the filling region.