Room Air Integrity Testing for Fire Suppressant Hold Time
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Solution Overview
Problem
Fire suppression systems face inefficiencies due to leaks in pipe networks and insufficient room integrity, leading to inadequate distribution of fire suppressant agents and reduced efficacy.
Innovation Solution
A system comprising a container of fire suppressant agent, a pipe network, pressure sensors, and a controller that performs pipe leakage and room air integrity tests using a test fluid supply and pressure measurements to estimate agent hold time and concentration, identifying leaks and ensuring sufficient agent distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fire suppressant agent is distributed throughout the enclosed space via pipe network, then the fire suppression capability is improved, but leaks in the pipe network cause loss of agent and reduce system reliability
Solution Approach 1:
The system performs preliminary testing by introducing a test fluid through the pipe network before actual fire suppression operation. Pressure sensors detect leaks during this preliminary phase, allowing identification and repair of leaks before fire suppressant agent is released, thereby preventing agent loss and ensuring system reliability
Solution Approach 2:
A test fluid is introduced as an intermediary substance to evaluate the integrity of the pipe network and room enclosure. This intermediary fluid allows detection of leaks through pressure measurements without using the actual fire suppressant agent, preventing potential agent loss while maintaining system reliability
2Reliability
If the room enclosure integrity is insufficient, then the fire suppressant agent leaks out without reaching required concentration, but improving enclosure integrity increases system complexity and cost
Solution Approach 1:
The system performs preliminary assessment of room enclosure integrity by introducing test fluid and measuring pressure changes. This preliminary evaluation identifies insufficient sealing areas before actual fire suppression, allowing targeted improvements to enclosure integrity without unnecessarily increasing overall system complexity
Solution Approach 2:
Pressure sensors provide feedback on room enclosure integrity by measuring pressure changes during test fluid introduction. This feedback mechanism identifies specific areas where enclosure integrity is insufficient, enabling targeted repairs or modifications rather than comprehensive system redesign, thus managing complexity while ensuring agent concentration reliability
3Reliability
If leaks occur in the pipe network, then the agent distribution is inadequate and fire suppression efficacy is reduced, but increasing system monitoring complexity increases device complexity
Solution Approach 1:
A test fluid serves as an intermediary for evaluating pipe network integrity through pressure measurements. This approach detects leaks in the distribution system without requiring complex continuous monitoring during normal operation, maintaining agent distribution reliability while limiting increases in device complexity to periodic testing infrastructure
Solution Approach 2:
The system uses its own existing pressure sensors and control mechanisms to perform self-diagnosis of pipe network leaks during scheduled testing. This self-service approach eliminates the need for separate complex monitoring systems, ensuring agent distribution reliability through periodic verification without significantly increasing device 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
The system effectively identifies and locates leaks in the pipe network and ensures the fire suppressant agent maintains a required concentration and duration within the enclosed space, enhancing the fire suppression system's effectiveness without disrupting business operations.
Implementation Method 1
a pressure sensor positioned to measure a pressure within a room containing the nozzles
Data Source
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AI summary
A fire suppression system includes a container of fire suppressant agent, a pipe network fluidly coupling the container to a plurality of nozzles, a pressure sensor positioned to measure a pressure within a room containing the nozzles, a test fluid supply configured to supply a test fluid to the room, and a controller operatively coupled to the test fluid supply and the pressure sensor. The controller is configured to: control the test fluid supply to supply the test fluid to the room at the first flow rate; control the pressure sensor to measure a first pressure within the room while the test fluid is supplied to the room at the first flow rate; and estimate an agent hold time and an achieved concentration that can be provided by the fire suppression system within the room based on the first flow rate and the first pressure.