ThermoFl Th Float Orange B 600 Deaths from hypothermia in water - - PowerPoint PPT Presentation
ThermoFl Th Float Orange B 600 Deaths from hypothermia in water annually in US Fisherman sacrifice their time in crashing waves and icy conditions. Accidents will always happen...and minutes in the cold water equate to matters of life
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Deaths from hypothermia in water annually in US “Fisherman sacrifice their time in crashing waves and icy conditions. Accidents will always happen...and minutes in the cold water equate to matters of life or death.”
Chief Incident Management Division
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Benchmark
Type III PFD Work Suit Insulation
Movability +
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ThermoFloat:
Exothermic Reaction:
CaCl2 (s) → Ca2+ (aq) + 2 Cl- (aq) ΔH°r = -82.9 kJ / mol
A Heating Lifejacket
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Testing: Viability of CaCl2
Water Container Reaction Box Thermometer hole ➢ 170 ℉ peak temperature with room temperature tap water ➢ 154 ℉ peak temperature with 32 ℉ salt water ➢ 70 minutes to cool to critical body core temperature (95 ℉)
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Key Findings
Demonstrated in sketch model Validated through research ➢ CaCl2 produces heat too quickly ➢ Gas is not a good heat conductor ➢ A control valve is needed to keep a steady heat source and control gas pressure ➢ Insulation (i.e. neoprene) could be used to slow down heat transfer from body to water
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Next Steps
➢ Design a mechanism to accurately control the heat dissipation at safe levels ➢ Integrate insulation into the vest for reduced heat loss
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Value: Priceless