Thermal designing on a small-sized AMTEC cell

Kotaro Tanaka, Takahiro Fuji, Takeo Honda

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)


The present paper discusses thermal designing and performance of a compact type AMTEC system. The compact type AMTEC system uses multiple small-sized cell components, which consist of sodium beta"-alumina solid electrolyte tubes of 3 mm in outer diameter and simple freestanding type capillary structure. When the cell components are arranged in a canister, the pressure drop due to sodium vapor flow from the electrode to the condenser becomes a critical parameter. The effect of the pressure drop was analytically evaluated and the optimum geometrical arrangement was considered. The typical calculated result shows that a 37-tube cell having a base area of 7.5 cm2 has a predicted output power of about 5 W at relatively low operating temperature of 900 K. This output power is almost equal to that of the high temperature type cells operating around 1,100 K. Structure and heat transfer analyses necessary for the miniaturization and the low temperature operation are reported in this paper. Preliminary thermal design on a cascaded system with the AMTEC and the thermionic converter is also discussed.

Original languageEnglish
Pages (from-to)394-399
Number of pages6
JournalProceedings of the Intersociety Energy Conversion Engineering Conference
Publication statusPublished - 2002
Externally publishedYes
Event2002 37th Intersociety Energy Conversion Engineering Conference, IECEC - Washington, DC, United States
Duration: 2002 Jul 292002 Jul 31

ASJC Scopus subject areas

  • Fuel Technology
  • Electrical and Electronic Engineering


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