Performance of wick pumped type AMTEC cell

Kotaro Tanaka, Takahiro Fujii

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A single β″-alumina tube AMTEC cell in which sodium working fluid is returned by a wick structure is designed, built and tested. The sodium which condenses in the low temperature condenser is transported to the high temperature evaporator through the wick, which generates the capillary force against the sodium vapor pressure using the fine porous structure of stainless-steel powder. Current-voltage characteristics were measured at an operating temperature of 923 K. The cell with TiN electrode achieves a specific power output of 0.13 W/cm2 initially. An electrochemical model is introduced to predict the cell performance and the calculated total resistance of the cell is 25% smaller than the measured one. The anode side current collecting resistance appears to increase the internal total resistance. Time dependent power output is also measured. Following an initial 15-30% decrease, the cell continues to generate power output in excess of 0.1 W/cm2 for a period of 100 hours. The result indicates that the designed wick can return liquid sodium against the pressure difference between the low pressure condenser and the high pressure evaporator in the cell.

Original languageEnglish
Pages (from-to)115-116
Number of pages2
JournalKagaku Kogaku Ronbunshu
Volume25
Issue number1
Publication statusPublished - 1999 Jan
Externally publishedYes

Fingerprint

Sodium
Evaporators
Aluminum Oxide
Stainless Steel
Current voltage characteristics
Vapor pressure
Powders
Temperature
Anodes
Alumina
Stainless steel
Electrodes
Fluids
Liquids

Keywords

  • Capillary wick
  • Energy conversion
  • Solid electrolyte
  • Thermoelectric converter

ASJC Scopus subject areas

  • Materials Science (miscellaneous)

Cite this

Performance of wick pumped type AMTEC cell. / Tanaka, Kotaro; Fujii, Takahiro.

In: Kagaku Kogaku Ronbunshu, Vol. 25, No. 1, 01.1999, p. 115-116.

Research output: Contribution to journalArticle

Tanaka, K & Fujii, T 1999, 'Performance of wick pumped type AMTEC cell', Kagaku Kogaku Ronbunshu, vol. 25, no. 1, pp. 115-116.
Tanaka, Kotaro ; Fujii, Takahiro. / Performance of wick pumped type AMTEC cell. In: Kagaku Kogaku Ronbunshu. 1999 ; Vol. 25, No. 1. pp. 115-116.
@article{edcc99ee4c364da3a9339678898aa974,
title = "Performance of wick pumped type AMTEC cell",
abstract = "A single β″-alumina tube AMTEC cell in which sodium working fluid is returned by a wick structure is designed, built and tested. The sodium which condenses in the low temperature condenser is transported to the high temperature evaporator through the wick, which generates the capillary force against the sodium vapor pressure using the fine porous structure of stainless-steel powder. Current-voltage characteristics were measured at an operating temperature of 923 K. The cell with TiN electrode achieves a specific power output of 0.13 W/cm2 initially. An electrochemical model is introduced to predict the cell performance and the calculated total resistance of the cell is 25{\%} smaller than the measured one. The anode side current collecting resistance appears to increase the internal total resistance. Time dependent power output is also measured. Following an initial 15-30{\%} decrease, the cell continues to generate power output in excess of 0.1 W/cm2 for a period of 100 hours. The result indicates that the designed wick can return liquid sodium against the pressure difference between the low pressure condenser and the high pressure evaporator in the cell.",
keywords = "Capillary wick, Energy conversion, Solid electrolyte, Thermoelectric converter",
author = "Kotaro Tanaka and Takahiro Fujii",
year = "1999",
month = "1",
language = "English",
volume = "25",
pages = "115--116",
journal = "Kagaku Kogaku Ronbunshu",
issn = "0386-216X",
publisher = "Society of Chemical Engineers, Japan",
number = "1",

}

TY - JOUR

T1 - Performance of wick pumped type AMTEC cell

AU - Tanaka, Kotaro

AU - Fujii, Takahiro

PY - 1999/1

Y1 - 1999/1

N2 - A single β″-alumina tube AMTEC cell in which sodium working fluid is returned by a wick structure is designed, built and tested. The sodium which condenses in the low temperature condenser is transported to the high temperature evaporator through the wick, which generates the capillary force against the sodium vapor pressure using the fine porous structure of stainless-steel powder. Current-voltage characteristics were measured at an operating temperature of 923 K. The cell with TiN electrode achieves a specific power output of 0.13 W/cm2 initially. An electrochemical model is introduced to predict the cell performance and the calculated total resistance of the cell is 25% smaller than the measured one. The anode side current collecting resistance appears to increase the internal total resistance. Time dependent power output is also measured. Following an initial 15-30% decrease, the cell continues to generate power output in excess of 0.1 W/cm2 for a period of 100 hours. The result indicates that the designed wick can return liquid sodium against the pressure difference between the low pressure condenser and the high pressure evaporator in the cell.

AB - A single β″-alumina tube AMTEC cell in which sodium working fluid is returned by a wick structure is designed, built and tested. The sodium which condenses in the low temperature condenser is transported to the high temperature evaporator through the wick, which generates the capillary force against the sodium vapor pressure using the fine porous structure of stainless-steel powder. Current-voltage characteristics were measured at an operating temperature of 923 K. The cell with TiN electrode achieves a specific power output of 0.13 W/cm2 initially. An electrochemical model is introduced to predict the cell performance and the calculated total resistance of the cell is 25% smaller than the measured one. The anode side current collecting resistance appears to increase the internal total resistance. Time dependent power output is also measured. Following an initial 15-30% decrease, the cell continues to generate power output in excess of 0.1 W/cm2 for a period of 100 hours. The result indicates that the designed wick can return liquid sodium against the pressure difference between the low pressure condenser and the high pressure evaporator in the cell.

KW - Capillary wick

KW - Energy conversion

KW - Solid electrolyte

KW - Thermoelectric converter

UR - http://www.scopus.com/inward/record.url?scp=24044458135&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=24044458135&partnerID=8YFLogxK

M3 - Article

VL - 25

SP - 115

EP - 116

JO - Kagaku Kogaku Ronbunshu

JF - Kagaku Kogaku Ronbunshu

SN - 0386-216X

IS - 1

ER -