Environmental Control Packages Using below Ambient Temperature Thermal Storage. Phase 2.

摘要

The living space environment of military vehicles can become oppressive when the vehicles are operating in hot-dry or humid climates. The objective of this program was to develop microclimate cooling systems for providing cool air to crew members on vehicles equipped with unclear, biological, and chemical air filtering systems. The design concept used a phase change material to store heat as latent heat of fusion. Heat removed from the crew during the day would be stored until night when it is rejected. Heat rejection during cool night is more efficient than during the day, thereby minimizing net energy consumption. This report documents the work to design, build, and test the microclimate cooling system. Tests show it cools 129 F to 62.3 F for 10.3 hours at 70.2 cfm. This provides a net energy savings of 16% over standard refrigeration units.