Scroll Carbon Dioxide Refrigerant Expander for Energy Recovery

Award Information
Agency: Department of Defense
Branch: Army
Contract: W909MY-04-C-0043
Agency Tracking Number: A022-1428
Amount: $724,666.00
Phase: Phase II
Program: SBIR
Awards Year: 2004
Solicitation Year: 2002
Solicitation Topic Code: A02-119
Solicitation Number: 2002.2
Small Business Information
Acorn Park, Cambridge, MA, 02140
DUNS: 111046152
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 John Dieckmann
 (617) 498-5818
Business Contact
 Rene Wong
Title: Contracting Officer
Phone: (617) 498-5655
Research Institution
The analysis and design study of the Phase 1 work shows that a proposed scroll carbon dioxide expander for refrigerant energy recovery in transcritical carbon dioxide cooling systems will be viable. The analysis also shows that the expander will improve efficiency of a carbon dioxide cooling system by more than 15%. A proof of concept prototype will be designed, fabricated, and tested. Then, in collaboration with Tecumseh Products Company, the prototype will be integrated with a hermetic two-stage rotary CO2 compressor. Via a common crankshaft, the mechanical power recovered by the expander will provide part of the shaft power needed to drive the compressor. The hermetic expander/compressor will be delivered to the Army for integration in ECU prototypes which are based on the carbon dioxide cycle to allow the full system benefits of the expander to be demonstrated.

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

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