Ceiling-Only Fire Protection for High-Piled Storage Quenching
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Solution Overview
Problem
Current fire protection systems for storage, particularly for exposed expanded plastics in rack storage, lack effective solutions for high-challenge fires without requiring additional accommodations like in-rack sprinklers or vertical barriers, and existing systems are not designed to handle fires at heights beyond standard limits.
Innovation Solution
A ceiling-only fire protection system that uses a network of fluid distribution devices and detectors to identify and respond to fires with a controlled, fixed volumetric flow of firefighting fluid, quenching the fire without the need for thermal activation, and can be installed at heights exceeding standard limits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If standard fire protection systems are installed according to NFPA 13, then fire control or suppression is provided for storage up to standard height limits, but exposed expanded plastics in rack storage with heights exceeding standard limits cannot be effectively protected
Solution Approach 1:
The system changes the operational parameters of fluid distribution by using controlled, non-thermal activation mechanisms (such as smoke detection or electronic control) instead of traditional thermal response sprinklers. This allows the system to operate at heights exceeding standard NFPA 13 limits while maintaining effective fire quenching through adjusted flow rates and distribution patterns tailored for high-challenge commodities like exposed expanded plastics.
Solution Approach 2:
The system employs dynamic control mechanisms that allow fluid distribution devices to be activated and adjusted based on real-time fire detection data. This dynamic operation enables the system to adapt to varying fire conditions and storage configurations at heights beyond standard limits, providing reliable fire protection where static standard systems would fail.
2Ease of operation
If thermal activation sprinklers are used, then automatic fire response is provided, but the system cannot provide controlled volumetric flow distribution needed to quench high-challenge fires in exposed expanded plastics
Solution Approach 1:
The system replaces the purely mechanical thermal activation mechanism with an electronically controlled fluid distribution system. This substitution allows for precise control of volumetric flow rates and distribution patterns while maintaining automatic response capability through electronic fire detection and control systems, thereby achieving reliable quenching of high-challenge fires in exposed expanded plastics.
Solution Approach 2:
The system incorporates feedback mechanisms where fire detectors continuously monitor conditions and provide data to the control system. This feedback loop enables the controlled operation of fluid distribution devices to deliver the precise volumetric flow needed for effective fire quenching, replacing the open-loop thermal activation of traditional sprinklers with a closed-loop controlled system.
3Reliability
If additional fire protection accommodations like in-rack sprinklers or vertical barriers are installed, then fire protection coverage is improved, but device complexity and installation requirements increase
Solution Approach 1:
The system employs universal fluid distribution devices that can be installed at various heights and configurations without requiring additional accommodations such as in-rack sprinklers or vertical barriers. These multi-functional devices are capable of providing effective fire quenching across the entire storage volume through controlled volumetric flow distribution, simplifying the overall system configuration while maintaining reliable fire protection coverage.
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 limits the impact of fires on storage commodities by quenching them at heights not covered by standard installation standards, reducing damage and eliminating the need for additional fire protection accommodations.
Implementation Method 1
a fixed volumetric flow of firefighting fluid is distributed to effectively quench a fire
Data Source
AI summary
Fire protection systems and methods for ceiling-only high-piled storage protection. The systems include a plurality of fluid distribution devices disposed beneath a ceiling and above a high-piled storage commodity having a nominal storage height ranging from a nominal 20 ft. to a maximum nominal storage height of 55 ft. and means for quenching a fire in the storage commodity. The stored commodity to be protected may include ex posed expanded plastics. The fluid distribution devices include a frame body having an inlet, an outlet, a sealing assembly, and an electronically operated releasing mechanism supporting the sealing assembly in the outlet.