Journal of Current Trends in Electrical Engineering ISSN: 3107-4375 (Online)

Authors: Karan Rana, Udit Verma

Abstract: Because of their great thermodynamic efficiency and low heat sink requirements, pyroelectric thermal energy harvesters are a fascinating alternative to thermoelectric devices. Thermoelectric generators create voltage from a spatial temperature gradient using the seebeck effect. Pyroelectricity, on the other hand, may capture the temporal variations of heat energy. The use of renewable energy sources such as solar and wind energy is possible with the non-Olsen cycle technique of pyroelectricity generation. The goal of this research is to investigate the potential of a Lead-zirconate-titanate (PZT-5H) pyroelectric material to collect energy using the Non-Olsen cycle method. The PZT-5H is exposed to solar radiation, and the mechanical setup is used to achieve a periodic temperature change in the material. A revolving chopper disc and a vertical axis wind turbine make up the mechanical arrangement (savonious type). The savonious wind turbine gives mechanical input to the chopper disc, allowing solar irradiation to fall on the PZT-5H material on a periodic basis, resulting in a temperature variation over time. Because the time changing temperature may be obtained from naturally accessible sources like as sun and wind energy, this approach appears to be more cost effective than the Olsen cycle method. Optical concentrators are used to increase sun irradiation in order to optimise production.

Keywords: Pyroelectricity, Seeback effect, Voltage, PZT-5H material, Thermal energy harvesters