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High Specific Power Multiple-Cylinder Alpha Free-Piston Stirling Engine

Award Information

Agency:
National Aeronautics and Space Administration
Branch:
N/A
Award ID:
77685
Program Year/Program:
2007 / SBIR
Agency Tracking Number:
053157
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Sunpower, Inc.
182 Mill Street Athens, OH 45701-2627
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 2
Fiscal Year: 2007
Title: High Specific Power Multiple-Cylinder Alpha Free-Piston Stirling Engine
Agency: NASA
Contract: NNC07CA21C
Award Amount: $599,440.00
 

Abstract:

The proposed effort will result in a design of a 30 kWe dual opposed alpha free-piston Stirling engine power conversion system for space applications, and provide proof of concept by the operation of a practical alpha engine. The stepped piston three-cylinder alpha FPSE has shown the highest efficiency and excellent specific power among various engines studied in Phase I. In addition, the three phase electric output of a three-cylinder machine is naturally better in the system context. Thus a high efficiency 15 kWe stepped three-cylinder alpha FPSE will be designed for a 30 kWe dual opposed operation by having two engines connected for perfect balancing in all harmonics. The program minimizes the development risks by combining proven technologies of Sunpower and Global Cooling Manufacturing Inc. (GCM). GCM has achieved the successful operation of a four-cylinder alpha free-piston Stirling cooler.

Principal Investigator:

Seon-Young K. Kim
Principal Investigator
7405920420
kim@sunpower.com

Business Contact:

Faith K. Knutsen
Business Official
7405942221
knutsen@sunpower.com
Small Business Information at Submission:

Sunpower, Inc.
182 Mill Street Athens, OH 45701

EIN/Tax ID: 310846436
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No