Cryogenic Loop Heat Pipe

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: N/A
Agency Tracking Number: 22803
Amount: $69,978.00
Phase: Phase I
Program: SBIR
Awards Year: 1994
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
1 Beaver Court, P.O. Box 398, Cockeysville, MD, 21030
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 David A. Wolf
 (410) 584-7500
Business Contact
Phone: () -
Research Institution
N/A
Abstract
Cryogenic heat pipes are typically characterized by their low heat transport capability, resulting from the low surface tension and the low latent heat of their working fluids. These heat transfer limits restrict the amount of heat which can be removed from the device being cooled and/or the allowable separation between the heat source and the sink. Loop Heat Pipes offer significant improvements in heat transport over conventional heat pipes, due to their fine-pored wick structures and liquid and vapor transport lines which are optimized to minimize pressure drop. Loop Heat Pipes have demonstrated their performance advantages at ambient temperature, and have proven to be self-priming, reliable heat transfer devices. The primary goal of the proposed program is to extend this technology to cryogenic temperatures while maintaining the reliability of the ambient temperature devices. A prototype Loop Heat Pipe will be developed in Phase I, with the design goal of improving heat transport capability over state-of- the-art cryogenic heat pipes by an order of magnitude or more. Demonstration tests will characterize the prototype's steady state performance capabilities, as well as its startup behavior. The test results will also be used to validate/update existing analytical models.

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

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