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Development of a Flexible Loop Heat Pipe Cold Plate
ISSN: 0148-7191, e-ISSN: 2688-3627
Published May 01, 1995 by SAE International in United States
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The current trend in military avionics design is to physically move electronics closer to the components they control. This saves on weight, increases component maintainability, reduces aircraft manufacturing costs, and reduces the amount of electromagnetic shielding. A disadvantage to this trend is the difficulty in achieving thermal control of these remotely located electronics.
Accordingly, this thermal control issue is being addressed through the development of a flexible loop heat pipe cold plate (FLHPCP). The FLHPCP is different than previous hardware of its kind by the fact that it operates in any orientation. The prototype FLHPCP that was fabricated and tested was 29 inches long and weighed 1.7 pounds. At full adverse orientation (evaporator vertically above condenser), the prototype met the 45 watt heat load requirement at an average evaporator cold plate-to-condenser cold plate temperature drop of 20°C. Reduction of this temperature drop is planned in future development. In addition, the prototype was tested in the adverse orientation and shown capable of transporting at least three times this heat load.
The FLHPCP is flexible to allow relative motion between the package to be cooled and the heat sink. It also allows cooling to be provided to surfaces in awkward locations relative to the heat sink. Connections to the heat sink can be anything from convective air cooled fins to solid plates bolted on the aircraft's structure.
CitationGernert, N. and Brown, J., "Development of a Flexible Loop Heat Pipe Cold Plate," SAE Technical Paper 951436, 1995, https://doi.org/10.4271/951436.
- Gernert, N.J. Sarraf D.B. Steinburg M. Flexible Heat Pipe Cold plates for Aircraft Thermal Control 1991 SAE Aerotech Conference, Paper No. 912105 Long Beach, CA September 24-27 1991
- Yerkes, K. Hager H.G. Transient Response of Heat Pipes for Actuator Thermal Management 1992 SAE Aerospace Atlantic Conference, Paper No. 92104 Dayton, OH april 7-10 1992
- Yerkes, K. Beam J.E. Arterial Heat Pipe Performance in a Transient Heat Flux and Body Force Environment SAE Aerotech '92, Paper No. 921944 Anaheim, CA October 5-8 1992
- Ernst, D.M. Phillips A.L. Rozin I.S. Loop Heat Pipes-Their Potential Space Nuclear Power and Propulsion Conference Albuquerque, NM January 9-13 1994
- Wolf, D.A. Bienert W.B. Investigation of Temperature Control Characteristics of Loop Heat Pipes 24th International Conference on Environmental Systems and 5th European Symposium on Space Environmental Control Systems Friedrichshafen, Germany June 20-23 1994
- Dickey, J.T. Peterson G.P. An Experimental and Analytical Investigation of the Operational Characteristics of a Capillary Pumped Loop AIAA 28th Thermophysics Conference Orlando, Florida July 6-9 1993
- Maidanik, Y.F. Vershinin S. Kholodov V. Dolgirev J. Heat Transfer Apparatus May 7 1985
- Maidanik, Y.F. Pastukhov V.G. Fershtater Y.G. Development, Analytical and Experimental Investigation of Loop Heat Pipes 7th International Heat Pipe Conference Minsk, USSR May 21-25 1990