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DIRECTED
ENERGY
PROFESSIONAL
SOCIETY
Abstract: 26-Symp-019
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UNCLASSIFIED, PUBLIC RELEASE
Integrated Thermal Management System (I-TMS) Utilizing Lightweight Hybrid Vapor Compression and Thermal Energy Storage for Mobile Directed Energy Weapon Platforms
High-energy laser (HEL) systems produce extreme, rapid-burst heat loads, posing significant challenges for thermal management on space-constrained mobile platforms. To address this, we present an Integrated Thermal Management System (I-TMS) utilizing Phase Change Material (PCM) based thermal energy storage (TES) for rapid latent heat absorption during operation, paired with a vapor compression system for regeneration during downtime. This approach efficiently decouples peak cooling loads from average heat rejection, optimizing system mass and power. A modular I-TES unit, utilizing an inorganic salt hydrate PCMs with melting temperature around 20°C, was designed and tested for HEL systems ranging from 10 to >300 kW. The proposed PCM demonstrated superior energy density (>90 kWh/m³) and lower costs compared to conventional organic PCMs and sensible storage alternatives. Experimental results confirm robust performance over 7,000 cycles without degradation, validating the I-TMS for high-density, mobile applications.
UNCLASSIFIED, PUBLIC RELEASE
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