Two-Phase Firefighting With Residual-Fire Detection
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Solution Overview
Problem
Existing fire fighting methods require high water consumption, large extinguishing agent storage, and use of ecotoxic chemicals, leading to high costs and environmental risks, with insufficient control of residual fires.
Innovation Solution
A method involving two phases of extinguishing, where a detection device identifies residual fire sources, allowing targeted discharge of extinguishing agents with varying effects based on fire parameters, minimizing agent use and environmental impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large amount of extinguishing agent is discharged to ensure fire containment, then the fire fighting effectiveness is improved, but the water consumption and storage requirements increase significantly
Solution Approach 1:
The fire fighting process is divided into two distinct phases: a first phase with initial extinguishing agent discharge, and a second phase with additional discharge only if residual fire sources are detected. This segmentation allows the system to avoid unnecessary discharge of large amounts of extinguishing agent while maintaining effective fire suppression.
Solution Approach 2:
The detection device continuously monitors the fire situation and provides feedback to the control device. Based on this feedback about residual fire sources, the system dynamically adjusts the extinguishing agent discharge quantity, discharging more only when necessary and reducing discharge when the fire is well-controlled, thereby optimizing water consumption.
2Reliability
If the entire amount of extinguishing agent is discharged after system triggering, then fire containment is ensured, but the storage tank space requirements and construction costs increase
Solution Approach 1:
The extinguishing agent discharge is segmented into conditional phases rather than a single full discharge. The first phase uses a base amount, and the second phase adds only the necessary additional amount based on residual fire detection, allowing for smaller storage tanks while maintaining containment reliability.
Solution Approach 2:
Instead of always discharging the full extinguishing agent capacity, the system applies partial action by discharging only the necessary amount in the second phase based on actual fire conditions. This reduces the required storage capacity while ensuring sufficient agent is available for effective fire containment.
3Reliability
If foaming agent additives are used to generate extinguishing foams, then the extinguishing effectiveness is improved, but ecotoxicological risks and disposal costs increase
Solution Approach 1:
Foaming agent additives are applied partially and selectively only in the second extinguishing phase when residual fire sources are detected, rather than being mixed into all discharged water. This reduces the total amount of ecotoxic chemicals used while maintaining extinguishing effectiveness where needed.
Solution Approach 2:
The foaming agent is applied locally at specific discharge points during the second phase based on detected residual fire locations, rather than uniformly throughout the system. This targeted application minimizes ecotoxicological impact while maintaining effectiveness at critical fire zones.
4Reliability
If manual intervention is used for residual fire fighting, then thorough extinguishing can be achieved, but response time and labor requirements increase
Solution Approach 1:
The detection device automatically detects residual fire sources and provides continuous feedback to the control device, enabling the system to automatically initiate a second extinguishing phase without waiting for manual assessment. This automated feedback loop significantly reduces response time compared to manual intervention while achieving thorough residual fire control.
Solution Approach 2:
The system performs self-monitoring and self-adjustment by automatically detecting residual fires and triggering additional extinguishing agent discharge without human intervention. This self-service capability eliminates the time delay associated with manual detection and response while ensuring complete fire suppression.
Data Source
AI summary
The invention relates to a method for fighting a fire event. According to the invention, the following method steps are proposed:detecting a fire event by a detection device,starting a first extinguishing phase for fighting the fire event, wherein an extinguishing agent with a first extinguishing effect is discharged during the first extinguishing phase by at least one discharge apparatus,monitoring the fire event by the detection device and detecting fire event parameters and determining a locality of at least one still existing residual fire source andstarting a second extinguishing phase on the basis of the detected fire event parameters, wherein an extinguishing agent with a second extinguishing effect is discharged, according to need, at least one of the locality or the surroundings thereof during the second extinguishing phase, wherein the second extinguishing effect differs from the first extinguishing effect. The invention further relates to a system for carrying out the method according to the invention and a control device.


