Abstract
The replacement of working fluid of the alkali metal themoelectric converter (AMTEC) is eminently suitable for achieving higher performance under lower operating temperatures. Potassium is a reasonable condidate because it has lower latent heat of vaporization and higher vapor pressure than sodium over the AMTEC operating conditions. The performance of the AMTEC cycle with potassium as the working fluid has been evaluated and discussed based on the recently reported ionic conductivity data of potassium-β”-alumina solid electrolyte. The calculated results show that the replacement of working fluid increases the peak efficiency from 28% to 31% at 1100 K with 1 mm thick β”-alumina solid electrolyte. If the thinner solid electrolyte is practically developed, the improvement of the performance can obviously be recognized because of the decrease of ionic conductivity.
| Original language | English |
|---|---|
| Pages (from-to) | 2857-2862 |
| Number of pages | 6 |
| Journal | Transactions of the Japan Society of Mechanical Engineers Series B |
| Volume | 58 |
| Issue number | 553 |
| DOIs | |
| Publication status | Published - 1992 |
| Externally published | Yes |
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Keywords
- Alkali Metal
- Direct Energy Conversion
- Energy Conversion
- Ionic Conductivity
- Solid Electrolyte
- Thermal Efficiency
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanical Engineering
Cite this
Evaluation of the Performance of Alkali Metal Thermoelectric Converter with Potassium β”-Alumina solid Electrolyte. / Tanaka, Kotaro; Negishi, Akira; Masuda, Toshihisa.
In: Transactions of the Japan Society of Mechanical Engineers Series B, Vol. 58, No. 553, 1992, p. 2857-2862.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Evaluation of the Performance of Alkali Metal Thermoelectric Converter with Potassium β”-Alumina solid Electrolyte
AU - Tanaka, Kotaro
AU - Negishi, Akira
AU - Masuda, Toshihisa
PY - 1992
Y1 - 1992
N2 - The replacement of working fluid of the alkali metal themoelectric converter (AMTEC) is eminently suitable for achieving higher performance under lower operating temperatures. Potassium is a reasonable condidate because it has lower latent heat of vaporization and higher vapor pressure than sodium over the AMTEC operating conditions. The performance of the AMTEC cycle with potassium as the working fluid has been evaluated and discussed based on the recently reported ionic conductivity data of potassium-β”-alumina solid electrolyte. The calculated results show that the replacement of working fluid increases the peak efficiency from 28% to 31% at 1100 K with 1 mm thick β”-alumina solid electrolyte. If the thinner solid electrolyte is practically developed, the improvement of the performance can obviously be recognized because of the decrease of ionic conductivity.
AB - The replacement of working fluid of the alkali metal themoelectric converter (AMTEC) is eminently suitable for achieving higher performance under lower operating temperatures. Potassium is a reasonable condidate because it has lower latent heat of vaporization and higher vapor pressure than sodium over the AMTEC operating conditions. The performance of the AMTEC cycle with potassium as the working fluid has been evaluated and discussed based on the recently reported ionic conductivity data of potassium-β”-alumina solid electrolyte. The calculated results show that the replacement of working fluid increases the peak efficiency from 28% to 31% at 1100 K with 1 mm thick β”-alumina solid electrolyte. If the thinner solid electrolyte is practically developed, the improvement of the performance can obviously be recognized because of the decrease of ionic conductivity.
KW - Alkali Metal
KW - Direct Energy Conversion
KW - Energy Conversion
KW - Ionic Conductivity
KW - Solid Electrolyte
KW - Thermal Efficiency
UR - http://www.scopus.com/inward/record.url?scp=85007692131&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85007692131&partnerID=8YFLogxK
U2 - 10.1299/kikaib.58.2857
DO - 10.1299/kikaib.58.2857
M3 - Article
VL - 58
SP - 2857
EP - 2862
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 - 553
ER -