伸縮密閉容器と形状記憶合金ばねから構成される負の熱膨張をする装置の動作特性(熱工学, 内燃機関, 動力など)

概要

論文の詳細を見る
Driving device for heat transfer enhancement in a fluid layer heated from above was developed. The device was composed of a coil spring made of shape memory alloy and a closed vessel that is flexible in axial direction telescopically. It shrinks and sinks under water when it is hot, and it expands and floats on water when it is cold. Therefore, the device was named "Negative Thermal Expansion Capsular Object" shortly NTE capsule. Two types of the NTE capsule were proposed. One is the inner spring type and the other is outer spring type. Their performance was proved experimentally. Their operating characteristics were compared to each other and their potentialities in heat transfer enhancement were discussed. As a result, it was proven that the heat transfer enhancement effect could desire NTE capsule of the outside spring type.
一般社団法人日本機械学会の論文
2002-05-25