Agency: Department of Defense | Branch: Navy | Program: SBIR | Phase: Phase II | Award Amount: 559.99K | Year: 2014
The objective of this project is to finish the development and qualification testing of Diver Heating and Cooling Systems. Both units are capable of operation from a similarly size battery for greater than 3 hours but can also be plugged into SDV boat power for very long durations. Each of the units proposed will be 8.5 long and less than 4 diameter. The heating system provides 300W of heat to the diver by pumping 38C water to the tube suit. The cooling unit will provide 250W of cooling to the diver by providing a flow of 20C water into the tube suit cooling garment.
Agency: Department of Defense | Branch: Special Operations Command | Program: SBIR | Phase: Phase II | Award Amount: 961.44K | Year: 2014
The Tactical Assault Light Operator Suit (TALOS) is being developed by the United States Special Operations Command (USSCOM). Warfighters operating in hot regions while wearing encapsulating Personal Protective Equipment (PPE) will require a Compact and Quiet Microclimate Cooling System (CQ-MCS) to protect the suit operators from heat stress. RINI Technologies has developed a 1 liter sized man-portable personal cooling product that keeps a soldier"s body cool. Personal cooling technology improves physical and cognitive function, and reduces dehydration; benefits that have a positive impact on health and mental readiness, mission endurance and operational readiness. The proposed Phase II effort will focus on integrating RINI"s personal cooling technology with the TALOS suit. In the 6 month base effort RINI will test and evaluate the noise characteristics of RINI"s cooling system and deliver (3) prototype systems and (3) integration kits for the Gen 1 TALOS suit. In the Option 1 effort, RINI will target a 20% system weight reduction and 50% noise reduction and investigate using TALOS physiological data to control the CQ-MCS cooling rate. RINI will fabricate, test and deliver (3) CQ-MCS prototypes with (3) Gen 2 integration kits at the conclusion of the Option 1 effort.
Agency: Department of Defense | Branch: Navy | Program: SBIR | Phase: Phase I | Award Amount: 99.91K | Year: 2009
The objective of this project is to prove the feasibility and develop the components of a system for cooling a diver in the Shallow Water Combat Submersible (SWCS). RINI Technologies, Inc. is developing a Free Diver (untethered) Heating System (FDHS) for NAVSEA through a Phase II SBIR and proposes to build a complementary cooling system to provide thermal protection for both cold and warm water diving in contaminated water. Both units are battery powered but can be plugged into a power source of the SWCS for extended (>8 hours) run time. Each of the units proposed will be 10” long, 3” diameter, and 1.2 L volume. The heating system, which will reach TRL-6 in August of 2009, provides 300W of heat via 35°C water to the tube suit in 10°C ambient ocean water while consuming only 111W of electrical power. The proposed cooling unit will provide 250W of cooling via 20°C water in 40°C ambient ocean water, consuming only 115W of electrical power. Through the use of these systems, the Navy can perform un-encumbered long duration dives in contaminated water at temperature extremes in the SWCS and allow for untethered diving.
Agency: Department of Defense | Branch: Air Force | Program: SBIR | Phase: Phase I | Award Amount: 149.93K | Year: 2012
ABSTRACT: In the proposed Phase I program, we will validate and optimize a thermal management (TM) concept for High Performance Electric Actuation System (HPEAS). The TM system does not interfere with the Environment Control System (ECS) nor the Power and Thermal Management System (PTMS). The concept is based on enhanced forced convection and thermal energy storage (TES). It is expected this approach can address essentially all scenarios encountered in electrical actuation of flight control surfaces. The TM system can function in a wide range of environmental temperature and pressure, and under a variable gravity situation. During most of the flight time, forced convection and radiation are sufficient to transport the waste heat from the HPEAS to the bay wall or wing skin for rejection to ambient air. Phase change material (PCM) will absorb heat during periods of peak power and/or when the ambient condition is not suitable for heat sinking. The feasibility and effectiveness of the proposed concept will be demonstrated by performing experiments with a full-scale lab prototype simulating an electromechanical actuator (EMA). The experimental data can also be used to validate a numerical model which is essential for design and optimization of TM systems. In the Phase II program, TM systems will be designed, fabricated and applied to flight quality EMA hardware in collaboration with a prime aerospace company. BENEFIT: The primary benefit of the proposed technique is to greatly increase the heat transfer effectiveness from EMAs to ambient air under various flight conditions and body force. By significantly enhancing air circulation in bays, EMAs located there can operate at much higher power without overheating. The numerical model developed in this program can be used to optimize heat removal by air surrounding complex-shaped heat sources. It is anticipated the proposed TM system can find application in the cooling of electric motors and generators in hybrid and electric vehicles. The technology developed can also be applied to many types of portable systems such as personal cooling systems, etc.
Agency: Department of Defense | Branch: Air Force | Program: SBIR | Phase: Phase I | Award Amount: 99.99K | Year: 2008
Rejecting heat from a FADEC unit 2m away over a temperature differential of only 13oC results in a very challenging problem for a LHP cycle, especially when considering the body forces expected on an aircraft. An ideal LHP cycle with only hydrostatic pressure head considerations shows that ammonia is the only fluid that could potentially provide 2m of coolant transport. Even with ammonia, a combination of heat leak to the compensation chamber, high ambient environment, high internal pressure, high g maneuver and low temperature budget makes it unlikely that a LHP can transport heat from the FADEC to the heat sink. RTI proposes to instead use their innovative Liquid Retention Evaporator for a Loop Thermosyphon which rightly suits the needs of this cooling problem. The Loop Thermosyphon offers a passive long-distance/low-temperature-differential cooling application which when combined with the Liquid Retention Evaporator can offer a huge cooling buffer for transient high g periods, lasting minutes.