Akademik Veri Yönetim Sistemi
Proceedings of the World Congress on Mechanical, Chemical, and Material Engineering, MCM 2015, Barcelona, İspanya, 20 - 21 Temmuz 2015, (Tam Metin Bildiri)
In this paper, natural convection in a square enclosure cooled by Peltier effect is investigated numerically. The thermoelectric cooler is assumed to be mounted on the left sidewall of the enclosure. The right sidewall of the enclosure is at constant temperature and horizontal walls are adiabatic. Flow is assumed to be two dimensional, Newtonian, and incompressible. Governing equations are derived using Boussinesq approximation. Computational results are obtained for values of electric current ranging from 2 to 8A. The results show that a thermal plume develops at the bottom left part of the enclosure in the early stage of the flow. Flow field consists of a counter clockwise cell. As the electric current and hence the heat flux on the left wall of the enclosure increases, a secondary circulation cell develops at the bottom part of the enclosure as a result of the thermal plume. With the thermoelectric cooler, very low temperatures can be reached within a relatively short time.