Ice Slurry Firefighting for Low-Water Remote Firebreaks
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Solution Overview
Problem
Firefighting vehicles face challenges in remote areas with limited water supply and vegetation fuel, where creating firebreaks with water is difficult due to heat loss before reaching the vegetation, necessitating a more effective water utilization method.
Innovation Solution
An ice slurry firefighting system that generates and dispenses a slurry of ice and water using a condenser, evaporator, and compressor to increase water effectiveness, controlled by a system controller and pump panel for various firefighting needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If water is pumped to remote locations for firefighting, then the water can be used to battle fires, but the water supply is limited and heat is lost before reaching the vegetation
Solution Approach 1:
The patent changes the temperature parameter of water by converting it into ice slurry form. This phase change allows the water to maintain cooling capacity longer during transport and application, directly addressing the heat loss problem while preserving the water supply quantity
Solution Approach 2:
The system utilizes phase transition by converting liquid water into ice slurry (solid-liquid mixture) through refrigeration. This phase change enables the water to resist heat loss more effectively during pumping and delivery to remote fire locations, solving both the heat loss and water supply limitations
2Reliability
If earth-moving equipment is used to create firebreaks, then vegetation can be removed to starve the fire, but such equipment is not always available
Solution Approach 1:
The patent replaces the mechanical earth-moving system with a thermal processing system. Instead of using heavy equipment to physically remove vegetation, the ice slurry system uses cold temperatures to kill and suppress vegetation, achieving firebreak creation without complex mechanical equipment
Solution Approach 2:
The system changes the approach from mechanical removal to thermal treatment by applying ice slurry. This parameter change in the method of vegetation suppression eliminates the need for unavailable earth-moving equipment while maintaining firebreak creation reliability
3Reliability
If water is applied to saturate vegetation to prevent fire, then the vegetation can be protected, but the heat from the approaching fire burns off the water before it reaches the vegetation
Solution Approach 1:
The patent applies phase transition by delivering ice slurry (solid-liquid mixture) instead of liquid water. The ice component melts and releases cooling effect progressively, preventing rapid evaporation and ensuring the cooling capacity reaches the vegetation even under high heat conditions
Solution Approach 2:
The system changes the temperature and phase parameters of the water application. By using ice slurry at sub-zero or near-freezing temperatures, the water maintains its cooling capacity longer and resists evaporation from fire heat, reliably protecting vegetation
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
Enhances firefighting effectiveness by maintaining water's cooling capacity through ice slurry, allowing efficient use in firebreaks and traditional extinguishment, even in remote locations with limited water supply.
Implementation Method 1
The slurry generation unit can include a condenser, an evaporator, and a compressor that function to remove heat from the water supplied by the tank. The removal of the heat produces ice which blends with the water to form a slurry mixture.
Data Source
AI summary
An ice slurry firefighting system includes a water tank for receiving and storing water from a water source. A water pump is connected to the tank and pumps water to a valve. The valve selectively directs the pumped water to one or both of a slurry generation unit and a pump panel. The slurry generation unit includes a condenser, an evaporator, and a compressor that remove heat from water supplied by the tank passing over evaporator coils to produce an ice slurry mixture. The pump panel houses a system controller and a valve tap for engaging a fire hose and nozzle. The system controller operates the pump, the valve, the slurry generation unit, and a ratio control valve to dispense any ratio of water and ice slurry through the hose and nozzle. A generator provides power to the system components.