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Title: Pyroelectric-Based Solar and Wind Energy Harvesting System
Organization:Department of Instrumentation and Control Engineering, National Institute of Technology, Tiruchirappalli 620015, India
Author:Krishnan S H, Ezhilarasi D, Uma G, Umapathy M
Source:IEEE Transactions on Sustainable Energy, Vol. 5 (1)
Date:January 2014

Inherent scarcity of thermal sources with a time varying temperature profile is the reason why the pyro electric- based energy harvesting is not as prominent as its counterpart, thermoelectric generators, in the thermal energy harvesting domain. In this paper, a practical solution for generating thermal oscillations required for sustainable pyro electric-based energy harvesting from the solar and wind energies, is presented. The main focus of the work is to modulate the concentrated solar radiation using a vertical axis wind turbine for producing higher rate of change of temperature on the pyro electric material. The maximum energy and power density produced by the prototype device using PZT-5H as pyro electric material are 6.927 mJ/cm /cycle and 421.18 W/cm, respectively, and on average it can produce a power density of 304.78 W/cm, which concurs with the theoretical model.