| タイトル | Magnetic stirling cycles: A new application for magnetic materials |
| 本文（外部サイト） | http://hdl.handle.net/2060/19770019672 |
| 著者（英） | Brown, G. V. |
| 著者所属（英） | NASA Lewis Research Center |
| 発行日 | 1977-06-06 |
| 言語 | eng |
| 内容記述 | The elements of the cycle are summarized. The basic advantages include high entropy density in the magnetic material, completely reversible processes, convenient control of the entropy by the applied field, the feature that heat transfer is possible during all processes, and the ability of the ideal cycle to attain Carnot efficiency. The mean field theory is used to predict the entropy of a ferromagnet in an applied field and also the isothermal entropy change and isentropic temperature change caused by applying a field. The results for isentropic temperature change are compared with experimental data on Gd. Coarse mixtures of ferromagnetic materials with different Curie points are proposed to modify the path of the cycle in the T-S diagram in order to improve the efficiency or to increase the specific power. |
| NASA分類 | ENERGY PRODUCTION AND CONVERSION |
| レポートNO | 77N26616
NASA-TM-X-73676
E-9196 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/181966 |
