Simulations of refrigeration on integrated circuits using micro-channels

• Type: Article in International Scientific Journal
• Date: 2008

Authors

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

Journal

Title: Journal of Non-Crystalline Solids

Vol. 354 No. 2585

Pages: 5295-5297

ISSN: 0022-3093

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 8 Citations

Scopus - 8 Citations

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 3