Directed reflectivity, long life AMTEC condenser (DRC). Final report of Phase II SBIR program[Alkali Metal ThermoElectric Converter] Page: 32 of 33
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Appendix A - Statement of Work for DRC Completion (8 months from start)
1. Adapt new efficiency test apparatus for PX-6 style converters
1.1 Fabricate heater/insulation package to accommodate non-chimney converter
1.2 Verify thermal loss analysis with dummy cell (probably done with PX-8 already)
2. Fabricate remaining components for DRW converter
2.1 Identify inventory of usable components from Phase II test build
2.2 Select 8 BASE tubes
2.2.1 Complete BASE tube assembly by standard manufacturing instructions
2.2.2 Identify or fabricate the BASE tube support plate, converter wall, artery/evaporator and
2.3 Install DRW shield and attach to converter wall to prevent movement during handling and operation
3. Assemble PX - DRW converter
3.1 Conduct He leak tests
3.2 Finish weld
3.3 Bake out and load sodium
4. Install converter into new efficiency test station
4.1 Instrument and verify data acquisition system operation and calibration
5. Carry out efficiency experiments as a function of temperature, current and power
6. Repeat these operations with a smooth wall converter of the same configuration.
7. Compare performance with analytical model results and draw possible conclusions on effectiveness of
8. Prepare and submit report on conclusions to DOE and to NASA/JPL for interest.
9. Prepare paper reporting results for publication
1. Since the initial efficiency testing in Phase II, a new test apparatus has been constructed that allows for
much more rapid data collection. The new apparatus relies on direct measurements of the temperature
gradients in an insulation package and following initial calibration, does not attempt to track all longitudinal
gradients since they can be established for the apparatus at the outset. The new efficiency apparatus
insulation package was built to accommodate primarily the "chimney" converter described by the A. Schock
group at Orbital Sciences and now proposed for use in the ARPS program. Some modification of the
insulation package will be required to fit the cylindrical PX series converter to be tested here.
2. Many of the components for the DRW test cell are still available for use. The BASE tube support plate
and artery and converter wall would need to be built. The critical DRW cylinders are available.
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Hunt, Thomas K. Directed reflectivity, long life AMTEC condenser (DRC). Final report of Phase II SBIR program[Alkali Metal ThermoElectric Converter], report, September 10, 2001; United States. (https://digital.library.unt.edu/ark:/67531/metadc717643/m1/32/: accessed April 19, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.