کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1462234 | 989629 | 2014 | 5 صفحه PDF | دانلود رایگان |
In this paper, the feasibility of using ferroelectric materials as a thermal transducer based on electrocaloric effect (ECE) has been studied. The electrocaloric response of the ferroelectric capacitor PMN-25PT which is a ceramic with the formula of 0.75Pb(Mg1/3Nb2/3)O3–0.25PbTiO3 and the dynamics of temperature variations at the inner boundary of a cylindrical sample to an applied periodic electric field have been studied. Alternative switching of the electrocaloric element allow the generation of directed heat flux. At first the outer boundary of the sample is put in convection condition and then in constant temperature condition. Inner boundary is insulated in two cases. Results show that different boundary conditions affect the transducer performance.
Journal: Ceramics International - Volume 40, Issue 1, Part A, January 2014, Pages 87–91