Abstract
The alkali metal thermal to electric converter (AMTEC) system which utilizes the sodium ion conductivity of a beta"-alumina solid electrolyte (BASE) is expected to have high conversion efficiency above 30% including practical heat losses. However, the achieved experimental 0efficiencies have been around 15%. In this paper, current-voltage characteristics and heat and mass transfer processes on a single cell have been examined experimentally and thermal electrode conversion efficiency has been discussed. Measured electrode conversion efficiency without thermal losses showed that it was about 40% at a power density of 0.3 W/cm2. A theoretical analysis on the thermal losses has also been conducted and these losses are estimated to be 0.3 W/cm2 in a practical tube type cell, so that an actual cell system efficiency of 30% is expected.
| Original language | English |
|---|---|
| Pages (from-to) | 234-244 |
| Number of pages | 11 |
| Journal | Heat Transfer - Asian Research |
| Volume | 30 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2001 May |
| Externally published | Yes |
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Keywords
- Direct energy conversion
- Energy conversion
- Heat transfer
- Solid electrolyte
- Thermal efficiency
- Thermoelectric conversion
ASJC Scopus subject areas
- Fluid Flow and Transfer Processes
Cite this
Experimental evaluation of electrode conversion efficiency of alkali metal thermal to electric converter. / Tanaka, Kotaro.
In: Heat Transfer - Asian Research, Vol. 30, No. 3, 05.2001, p. 234-244.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Experimental evaluation of electrode conversion efficiency of alkali metal thermal to electric converter
AU - Tanaka, Kotaro
PY - 2001/5
Y1 - 2001/5
N2 - The alkali metal thermal to electric converter (AMTEC) system which utilizes the sodium ion conductivity of a beta"-alumina solid electrolyte (BASE) is expected to have high conversion efficiency above 30% including practical heat losses. However, the achieved experimental 0efficiencies have been around 15%. In this paper, current-voltage characteristics and heat and mass transfer processes on a single cell have been examined experimentally and thermal electrode conversion efficiency has been discussed. Measured electrode conversion efficiency without thermal losses showed that it was about 40% at a power density of 0.3 W/cm2. A theoretical analysis on the thermal losses has also been conducted and these losses are estimated to be 0.3 W/cm2 in a practical tube type cell, so that an actual cell system efficiency of 30% is expected.
AB - The alkali metal thermal to electric converter (AMTEC) system which utilizes the sodium ion conductivity of a beta"-alumina solid electrolyte (BASE) is expected to have high conversion efficiency above 30% including practical heat losses. However, the achieved experimental 0efficiencies have been around 15%. In this paper, current-voltage characteristics and heat and mass transfer processes on a single cell have been examined experimentally and thermal electrode conversion efficiency has been discussed. Measured electrode conversion efficiency without thermal losses showed that it was about 40% at a power density of 0.3 W/cm2. A theoretical analysis on the thermal losses has also been conducted and these losses are estimated to be 0.3 W/cm2 in a practical tube type cell, so that an actual cell system efficiency of 30% is expected.
KW - Direct energy conversion
KW - Energy conversion
KW - Heat transfer
KW - Solid electrolyte
KW - Thermal efficiency
KW - Thermoelectric conversion
UR - http://www.scopus.com/inward/record.url?scp=0035332946&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035332946&partnerID=8YFLogxK
U2 - 10.1002/htj.1013
DO - 10.1002/htj.1013
M3 - Article
VL - 30
SP - 234
EP - 244
JO - Heat Transfer - Asian Research
JF - Heat Transfer - Asian Research
SN - 1099-2871
IS - 3
ER -