Thermo-Acoustic Convertor for Space Power

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$69,735.00
Award Year:
2006
Program:
SBIR
Phase:
Phase I
Contract:
NNC06CA65C
Award Id:
77686
Agency Tracking Number:
053162
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
182 Mill Street, Athens, OH, 45701
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
071633614
Principal Investigator:
JamesWood
Principal Investigator
(740) 594-2221
wood@sunpower.com
Business Contact:
FaithKnutsen
Business Official
(740) 594-2221
knutsen@sunpower.com
Research Institute:
n/a
Abstract
Sunpower will introduce thermoacoustic Stirling heat engine (TASHE) technology into its existing Stirling convertor technology to eliminate the moving mechanical displacer. The displacer function will be performed by a thermal buffer tube and supporting thermoacoustic components containing no moving mechanical parts. Sunpower's linear alternator will be retained, except re-sized to accommodate the power of the TASHE. TASHE technology has evolved independently, spearheaded by efforts at Los Alamos National Laboratory and typically packages components (heat exchangers, thermal buffer tube) in a physically different layout than typical Stirling convertor technology. The innovation here is to recognize the similarity between components and repackage the thermoacoustic components as closely as possible to the proven layout used for Sunpower's engines. In this way it will be possible to make direct comparisons of size, weight and efficiency between thermoacoustic and displacer-type Stirling convertors. The research will help NASA assess the relative benefits of thermoacoustic and displacer-type Stirling convertors for space power applications and may lead to technology uniquely suited to some missions where displacer-type technology is unacceptable for whatever reason. In Phase 1 we will optimize the concentric TASHE design to provide as much electrical output as possible from a single GPHS (nominally 220 W of heat delivered to the convertor). This design will use the same te

* information listed above is at the time of submission.

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