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Smart Materials Research
Volume 2012 (2012), Article ID 160956, 5 pages
http://dx.doi.org/10.1155/2012/160956
Research Article

Pyroelectric Energy Harvesting: With Thermodynamic-Based Cycles

Mechanical Engineering Department, School of Engineering, Razi University, Kermanshah 67149-67346, Iran

Received 30 November 2011; Revised 31 January 2012; Accepted 2 February 2012

Academic Editor: Mickaƫl Lallart

Copyright © 2012 Saber Mohammadi and Akram Khodayari. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This work deals with energy harvesting from temperature variations using ferroelectric materials as a microgenerator. The previous researches show that direct pyroelectric energy harvesting is not effective, whereas thermodynamic-based cycles give higher energy. Also, at different temperatures some thermodynamic cycles exhibit different behaviours. In this paper pyroelectric energy harvesting using Lenoir and Ericsson thermodynamic cycles has been studied numerically and the two cycles were compared with each other. The material used is the PMN-25 PT single crystal that is a very interesting material in the framework of energy harvesting and sensor applications.