Refrigerant Expansion Energy Recovery System

Award Information
Agency:
Department of Defense
Branch
Army
Amount:
$69,972.00
Award Year:
2003
Program:
SBIR
Phase:
Phase I
Contract:
DAAB15-03-C-C00
Award Id:
63016
Agency Tracking Number:
A022-1428
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Acorn Park, Cambridge, MA, 02140
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
JohnDieckmann
Principal
(617) 498-5818
dieckmann.j@tiax.biz
Business Contact:
ReneeWong
Contracting Officer
(617) 498-5655
wong.renee@tiax.biz
Research Institute:
n/a
Abstract
The objective of this proposal is to demonstrate the feasibility of a scroll expansion device for energy recovery in a trans-critical CO2 vapor compression cycle, using conditions typical of Army Environmental Control units (ECUs). Implementation of ascroll expander in a CO2 vapor compression system such as an ECU has the potential to improve system performance so that it is comparable to or even surpasses that of conventional fluorocarbon-based systems. Scroll designs are used extensively incompressors for air conditioners and heat pumps and have also been used for expansion devices. The pressures and flow rates expected in a CO2 ECU are well-suited to a scroll device. Preliminary calculations suggest that bearing loads are manageable, andthat the two scrolls can be manufactured to sufficient accuracy using conventional computer numerically controlled (CNC) milling techniques. Therefore, we would expect the device to maintain high volumetric and mechanical efficiencies, thus substantiallyimproving the overall ECU efficiency. The use of a scroll expander in a CO2 vapor compression system can substantially improve system efficiency, thus enhancing the potential for commercialization of CO2- based air conditioners and heat pumps in a widevariety of applications.

* information listed above is at the time of submission.

Agency Micro-sites


SBA logo

Department of Agriculture logo

Department of Commerce logo

Department of Defense logo

Department of Education logo

Department of Energy logo

Department of Health and Human Services logo

Department of Homeland Security logo

Department of Transportation logo

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government