OS4-9 熱交換可能な熱電モジュールの開発(OS4 省エネルギー・小型分散電源・コジェネ技術,分散と集中の共存)

概要

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Different versions of thermoelectric modules composed of p-type Ca_3Co_4O_9 (Co-349) and n-type CaMnO_3 (Mn-113) bulks, which have pipe-type shapes, were constructed using Ag electrodes, paste and stainless steel (SUS-316) tubes. The number of pairs of oxide thermoelectric devices was 20-54. The devices were connected with the SUS tube coated with ZrO_2 by thermal spray using an insulating paste composed of iron oxide. Power generation was carried out in flame by combustion of natural gas. Water was flowed inside the SUS tube for cooling. The module consisting of 10 pairs of devices can generate about 20mW in a condition of 780℃ of out side temperature of the modules, 20℃ and 16cc/min of water temperature and flow rate inside the SUS tube. The power generation was carried out three times with intermediate cooling and gone on for one hour in each generation. Deterioration in power and internal resistance of the module were not observed after the third power generation. The module consisting of 54 pairs of devices can generate 0.28W and steam simultaneously by inserting in an instantaneous water heater.
社団法人日本機械学会の論文
2006-06-28