Dual-Mode Inerting System for Flexible Oxygen Reduction
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Solution Overview
Problem
Conventional two-stage inerting systems require high initial capital investments and operational costs due to the need for two separate inert gas sources to set and maintain different oxygen levels in enclosed spaces, which is not feasible in all applications and inefficient in terms of space and energy usage.
Innovation Solution
A single inert gas source system utilizing a compressor and gas separation system that can switch between VPSA and PSA modes to provide a predefinable and reduced oxygen content, allowing for efficient adjustment of nitrogen-enriched gas output to set and maintain both base and full inerting levels, reducing the need for separate gas sources and optimizing energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two separate inert gas sources are used to maintain base inerting level and provide full inerting capability, then fire prevention reliability is improved, but initial capital investment and operational costs increase
Solution Approach 1:
The patent combines two separate inert gas sources into a single integrated system that can operate in multiple modes. The system merges the functions of maintaining base inerting level (15-17% oxygen) and providing full inerting capability (12-14% oxygen) into one device, eliminating the need for separate gas sources and reducing system complexity while maintaining fire prevention reliability.
Solution Approach 2:
The single inert gas source is designed with multi-functionality to perform both base inerting maintenance and full inerting provision. The system can dynamically adjust its output to serve different fire safety requirements, making one device capable of replacing multiple specialized devices and reducing overall system complexity.
2Speed
If two separate inert gas sources are used, then the ability to quickly reduce oxygen to full inerting level is improved, but operational costs and initial investment increase
Solution Approach 1:
The system employs dynamic operation modes that allow it to adapt its performance characteristics. In normal operation, it maintains base inerting level with lower energy consumption. When fire danger is detected, it dynamically switches to a high-speed mode that quickly reduces oxygen to full inerting level, providing both speed capability and energy efficiency at different operational states.
Solution Approach 2:
The system changes its operational parameters based on the situation. By adjusting flow rates, pressure, and gas composition dynamically, it can achieve rapid oxygen reduction when needed while operating at energy-efficient parameters during normal conditions, thereby reducing overall operational costs while maintaining speed capability.
3Device complexity
If a single inert gas source is used, then device complexity and costs are reduced, but the ability to quickly reduce oxygen to full inerting level may be compromised
Solution Approach 1:
The single inert gas source incorporates dynamic capability to increase its nitrogen output capacity when full inerting is required. The system can transition from maintaining base inerting levels to rapidly producing large amounts of nitrogen gas, ensuring that productivity requirements are met without needing multiple separate sources.
Solution Approach 2:
The system changes its operational parameters to maximize nitrogen output capacity when needed. By adjusting compression ratios, flow rates, and separation efficiency, the single gas source can dynamically increase its productivity to match the requirements of full inerting scenarios while maintaining cost-effectiveness.
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 solution reduces initial investment and operational costs while maintaining efficiency by using a single gas separation system that can adapt to different oxygen level requirements, providing a cost-effective and space-efficient method for inerting in enclosed spaces.
Implementation Method 1
The gas separation system (10) is designed to be operated in VPSA mode or PSA mode
Implementation Method 2
The gas separation system (10) is designed to be operated in VPSA mode or PSA mode
Implementation Method 3
a compressor system (3) for compressing an initial gas mixture
Data Source
AI summary
The invention relates to an inerting system as well as an inerting method for reducing oxygen in which an oxygen content which is predefinable and reduced in comparison to normal ambient air is set and maintained in the spatial atmosphere of an enclosed room (2). To this end, the inerting system (1) comprises a compressor system (3) for compressing an initial gas mixture as well as a gas separation system (10) connected to the compressor system (3). At least a portion of the oxygen contained within the compressed initial gas mixture is separated in the gas separation system (10). The gas separation system (10) is designed to be selectively operated in either a VPSA mode or a PSA mode.