NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Condenser design for AMTEC power conversionThe condenser and the electrodes are the two elements of an alkali metal thermal-to-electric conversion (AMTEC) cell which most greatly affect the energy conversion performance. A condenser is described which accomplishes two critical functions in an AMTEC cell: management of the fluid under microgravity conditions and optimization of conversion efficiency. The first function is achieved via the use of a controlled surface shape, along with drainage grooves and arteries to collect the fluid. Capillary forces manage the fluid in microgravity and dominate hydrostatic effects on the ground so the device is ground-testable. The second function is achieved via a smooth film of highly reflective liquid sodium on the condensing surface, resulting in minimization of parasitic heat losses due to radiation heat transfer. Power conversion efficiencies of 25 percent to 30 percent are estimated with this condenser using present technology for the electrodes.
Document ID
19920068182
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Crowley, Christopher J.
(Creare, Inc. Hanover, NH, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1991
Subject Category
Energy Production And Conversion
Meeting Information
Meeting: IECEC ''91: Intersociety Energy Conversion Engineering Conference
Location: Boston, MA
Country: United States
Start Date: August 4, 1991
End Date: August 9, 1991
Accession Number
92A50806
Funding Number(s)
CONTRACT_GRANT: NAS8-38436
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available