Novel Regenerators for Use Below 35 Kelvin

Award Information
Agency:
Department of Defense
Amount:
$99,739.00
Program:
SBIR
Contract:
W9113M-09-C-0054
Solitcitation Year:
2008
Solicitation Number:
2008.3
Branch:
Missile Defense Agency
Award Year:
2009
Phase:
Phase I
Agency Tracking Number:
B083-010-0087
Solicitation Topic Code:
MDA08-010
Small Business Information
Atlas Scientific
1367 Camino Robles Way, San Jose, CA, 95120
Hubzone Owned:
N
Woman Owned:
N
Socially and Economically Disadvantaged:
N
Duns:
938515913
Principal Investigator
 Ali Kashani
 Program Director
 (408) 507-0906
 akashani@atlasscientific.com
Business Contact
 Ali Kashani
Title: Program Director
Phone: (408) 507-0906
Email: akashani@atlasscientific.com
Research Institution
N/A
Abstract
Future MDA missions will require various enhancements in multi-stage cryocoolers. These include increased efficiency, reduced vibration and reductions in overall system mass and power consumption. For the small coolers required, pulse tube and Stirling coolers offer the best opportunities. At present, the efficiency of these coolers is limited by the effectiveness of low-temperature-stage regenerators. Below about 60 K, two factors play key roles in reducing the effectiveness of regenerators. One is that the heat capacity of most materials falls rapidly with decreasing temperature, thereby, severely limiting the number of useful materials to a few in common use. A second factor is that these commonly used materials are only available in powder form, a form known to raise reliability issues. In this effort, we will address both factors. We will use newly developed materials with high heat capacities at temperatures below 60 K, higher than that of commonly used materials. Further, we will use a novel low-temperature regenerator matrix that will address both the aspect of high-efficiency and regenerator durability. Both the void fraction and the ratio of surface area to solid fraction of the regenerator matrix will be varied to achieve high efficiency

* information listed above is at the time of submission.

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