Passive Two-Phase FADEC Cooling System

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-08-M-2825
Agency Tracking Number: F073-049-0911
Amount: $99,986.00
Phase: Phase I
Program: SBIR
Awards Year: 2008
Solicitation Year: 2007
Solicitation Topic Code: AF073-049
Solicitation Number: 2007.3
Small Business Information
582 South Econ Circle, Oviedo, FL, 32765
DUNS: 608777798
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Daniel Rini
 (407) 359-7138
Business Contact
 Daniel Rini
Title: President
Phone: (407) 359-7138
Research Institution
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.

* Information listed above is at the time of submission. *

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