Abstract
The alkali metal thermal to electric converter (AMTEC) system which utlizes the sodium ion conductivity of beta"-alumina solid electrolyte (BASE) is expected to have high conversion efficiency above 30% including practical heat loss. However, the achieved experimental efficiency- 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 0.3 W/cm2 in a practical tube type cell, so it is obtained that the actual cell system efficiency of 30% will be expected.
| Original language | English |
|---|---|
| Pages (from-to) | 301 |
| Number of pages | 1 |
| Journal | Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B |
| Volume | 65 |
| Issue number | 629 |
| Publication status | Published - 1999 |
| 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
- Mechanical Engineering
- Condensed Matter Physics
Cite this
Experimental evaluation on electrode conversion efficiency of alkali metal thermal to electric converter. / Tanaka, Kotaro.
In: Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, Vol. 65, No. 629, 1999, p. 301.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Experimental evaluation on electrode conversion efficiency of alkali metal thermal to electric converter
AU - Tanaka, Kotaro
PY - 1999
Y1 - 1999
N2 - The alkali metal thermal to electric converter (AMTEC) system which utlizes the sodium ion conductivity of beta"-alumina solid electrolyte (BASE) is expected to have high conversion efficiency above 30% including practical heat loss. However, the achieved experimental efficiency- 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 0.3 W/cm2 in a practical tube type cell, so it is obtained that the actual cell system efficiency of 30% will be expected.
AB - The alkali metal thermal to electric converter (AMTEC) system which utlizes the sodium ion conductivity of beta"-alumina solid electrolyte (BASE) is expected to have high conversion efficiency above 30% including practical heat loss. However, the achieved experimental efficiency- 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 0.3 W/cm2 in a practical tube type cell, so it is obtained that the actual cell system efficiency of 30% will be 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=24044504606&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=24044504606&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:24044504606
VL - 65
SP - 301
JO - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
JF - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
SN - 0387-5016
IS - 629
ER -