アイドラープーリ型強制冷却機構を付与したプーリ型SMA熱エンジンの試作とその出力特性

抄録

The pulley-type heat-engine using shape memory alloy (SMA) system, which is consisted of pulleys and coil or liner shape SMA element, is one of the representative SMA heat-engine for the recovering of low-temperature exhaust heat energy. However, the pulley-type SMA engine tends to reduce of output-power by the cooling insufficiency of SMA element because the main cooling method of this engine is air cooling. For improvement of the cooling efficiency and output power, we invented a new cooling system contained in the pulley and confirmed the availability. It is thought that the cooling position of SMA element for pulley-type heat engine has an effect on the output power of engine. Therefore, we fabricate the idler pulley with cooling system and the effect of cooling position of SMA element on the output power of heat engine is investigated.