Simulations of refrigeration on integrated circuits using micro-channels

• Tipo: Artigo em Revista Científica Internacional
• Data: 2008

Autores

pereira, a. m. (Autor) Outra; oliveira, j. c. r. e. (Autor) FEUP; soares, j. c. (Autor) Outra; ventura, j. (Autor) REIT; sousa, j. b. (Autor) FCUP; araujo, j. p. (Autor) FCUP

Revista

Título: Journal of Non-Crystalline Solids

Vol. 354 Nº 2585

Páginas: 5295-5297

ISSN: 0022-3093

Editora: Elsevier

Indexação

ISI Web of Knowledge - 8 Citações

Scopus - 8 Citações

Outras Informações

ID Authenticus: P-003-TKE

DOI: 10.1016/j.jnoncrysol.2008.06.122

Abstract (EN): We developed a two-dimensional transient numerical model that solves the first step of heat transfer of an active magnetic regenerative refrigerator (AMR). The magnetic materials considered are Gd(5)Si(2)Ge(2) (GSG), La(Fe(0.88)Si(0.12))(13) (LFS) and La(0.66)Sr(0.33)MnO(3) (LSMO), pointed as promising materials to be used in magneto-refrigeration near room temperature, due to their quite large magnetocaloric effect. Our numerical results quantify the time frame of heat transfer, an important factor that needs to be taken into account for technological applications. We found that LSMO shows the largest temperature variation when compared with GSG and LFS. However, in practice the cooling/heating times are also important factors, and we found that using LSMO as the magnetic material, a longer time is needed to complete the heat transfer process. Thus, the use of GSG or LFS leads to an increase of the cooling power of the system.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 3