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Endothermic Phase Change

Solution Cost Paraffin Wax: 1.60 - 1.90 $ / Kg Storage Packets: 10 – 20 $ /packet Nomex Blend Base Layer: 10 -20 $ /shirt Coolers: 10 – 20 $ /cooler Total Max ≈ 62 $ Negligible compared to Bunker Gear ≈ 3000-5000 $.

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Endothermic Phase Change

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  1. Solution Cost Paraffin Wax: 1.60 - 1.90 $ / Kg Storage Packets: 10 – 20 $ /packet Nomex Blend Base Layer: 10 -20 $ /shirt Coolers: 10 – 20 $ /cooler Total Max ≈ 62 $ Negligible compared to Bunker Gear ≈ 3000-5000 $ Thermally Protective Gear Causes Heat Stress and Heart Attacks, the Primary Cause of Firefighter Deaths PCM Prevents Firefighter Heart Attacks Solution - Phase Change Material: 19-Carbon Technical Grade Organic Paraffin Wax Latent Heat of Fusion: 222 KJ/Kg Melting Point: 32°C 3 Kg Absorbs 666 KJ Firefighter metabolic rate in extremes ≈ 600 KJ/h Linear 19-Carbon Base for Technical Grade Paraffin DECREASES HEART ATTACKS Increases Manpower Efficiency Endothermic Phase Change Cools for 1.11 Hours in Extremes Prevents Heat Stress Increases Oxygen Efficiency Fewer Shift Rotations Needed Coolers can Store Refill Packets Eliminates Need for Rehab

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