نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشکده مهندسی مکانیک، دانشگاه صنعتی قم، قم
2 دانشکده مهندسی مکانیک، دانشگاه صنعتی قم، قم، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Using PCMs is a suitable option in the thermal management of satellites to prevent temperature increase and improve the life of electronic components that generate heat. While changing phase, these materials store latent heat and transfer it at the right time. This article has numerically investigated the use of porous fins to improve heat transfer in PCMs. A parameter called effectiveness has been defined to compare different designs. A system with a larger value of this parameter melts more PCM in less time. The studied geometry is an annular cylinder. The space between the walls is filled with a PCM, and the inner and outer walls are at a constant temperature. The effect of different parameters, such as the length and thickness of the porous vanes, temperature boundary conditions, the type of porous vanes (permeability effect), and the type of fins, were investigated. The results show that porous blades can improve the problem of heat dissipation inside PCMs. For example, in the geometry with five porous fins (with length and thickness of 45 mm and 15 mm, respectively), the melting time is reduced to almost on-third, and it has an efficiency of 2.9.
کلیدواژهها [English]
)