Supplemental Cooling Using Phase Change Material for High Temperature Transient Capability Navy SBIR FY2010.3 Sol No.: Navy SBIR FY2010.3 Topic No.: N103-198 Topic Title: Supplemental Cooling Using Phase Change Material for High Temperature Transient Capability Proposal No.: N103-198-0026 Firm: SPIRITECH Advanced Products, Inc. 731 N US Highway 1 Suite 1 Tequesta, Florida 33469 Contact: Mark Palusis Phone: (561) 741-3441 Web Site: www.spiritech.cc Abstract: A unique modular heat exchanger (HEX) incorporating Phase Change Material (PCM) is proposed for storing high transient thermal loads in the F-35 aircraft. The modular HEX employs a foam metal lattice within the PCM to enhance conduction. In addition, a foam metal lattice is included within the fuel coolant passages to enhance heat transfer by increasing surface area and by generating increased turbulence in the fuel. The PCM provides thermal storage for high transient thermal loads, allowing the baseline cooling system to be sized for steady-state loads, while the modular PCM system to be used for removing the high, off-design transient loads. This design approach allows the cooling system to be sized for the lower steady-state loads, minimizing its size and weight. The proposed Phase I analytical effort will demonstrate feasibility of the PCM HEX by analysis, while the Phase I OPTION will fabricate and test a HEX concept to validate the new analytical tools and demonstrate the PCM HEX concept. Test results will be used to refine the Phase I analytical tools and design, which will form the foundation of the Phase II detail design. Benefits: This SBIR effort (Phases I and II) will result in the development of a heat exchanger capable of absorbing large transient thermal loads applicable to F-35 aircraft. This system also provides a potential thermal management solution for other aircraft, such as the F-22, and multiple Small, Unmanned Aircraft Systems (SUASs). This provides an important contribution as an enabling technology for achieving the thermal management goals of the DoD, as advanced weapons systems become more electric and dependent on short duration, high power usage. Other commercial markets include thermal storage and heating/cooling for green technologies, such as passive air-conditioning systems, solar heating, and cooling for battery systems. The market for applicable green technologies offers a large commercialization potential since it is growing quickly and has been encouraged through recent government support. Return