Diver Breathing Gas Re-heater for Closed Circuit Underwater Breathing Apparatus

The objective of this proposal is to develop a robust, lightweight and compact device for re-heating and maintaining the temperature of a divers inspired breathing gas when diving on a closed circuit underwater breathing apparatus for the duration of the dive. As a solution, Simuleer proposes to develop the Hybrid Energy Abiotic Thermoelectric (HEAT) system based on a high-power hybrid (i.e. passive and active) power system in order to meet the high power (~35-200 Watts) needs of this application scenario. The HEAT innovations enable a compact (for maximum maneuverability), powerful (to achieve peak power needs of 200 Watts), long-lasting (to provide heating for a >8 hour long dive), system without any breathing obstruction (for maximum comfort).In Phase I Simuleer will perform a feasibility study to determine potential solutions that meet the required specifications, and document the results.Based on results of the feasibility study, analysis and simulations of the system components will be performed to ensure that operational characteristics are in line with specification requirements.In Phase II, Simuleer will develop, install, and demonstrate a prototype HEAT system based on the Phase I feasibility study of a diver breathing gas re-heater for a closed circuit underwater breathing apparatus.