An Integrated SiGe Based Thermoelectric Generator with Parabolic Trough Collector Using Nano HTF for Effective Harvesting of Solar Radiant Energy

  • Pon Vengatesh Ramamurthi
  • Edward Rajan Samuel NadarEmail author


An integrated thermoelectric generator (TEG) with the parabolic trough collector (PTC) for renewable power generation system has been investigated under different solar irradiations, heat transfer fluids (HTF) and TEG materials. In this research work, the idea of using a TEG for effective heat recovery from a solar collector is implemented in an innovative approach. The heat absorbed from PTC is supplied with the hot junction of the TEG and the cold junction being maintained less than surrounding temperature with cold water using an earthen pot surrounded by a thermocole. The temperature gradient between the hot and cold junction of TEG establishes the amount of power extraction. The high temperature absorption is enhanced by the use of synthetic HTF and nanofluids with nano particles (Alumina, Silica, TiO2 and CuO), which increases the effective harvesting of solar radiant energy. Moreover, the research work focuses to find the most efficient material for the hot and cold part of TEG. Silicon Germanium (SiGe) material for fabrication of TEG is suggested which has good ZT (figure of merit) values and electrical profile as compared to conventional Bismuth Telluride (Bi2Te3) under different solar irradiation conditions has been evaluated. The mathematical modelling of this proposed integrated energy harvesting system has been developed. The modelling and array configuration of TEG has been analysed with conventional Bi2Te3 and proposed SiGe materials. The performance of TEG with a PTC integrated system has been experimentally tested and the obtained results illustrate the better effective harvesting of solar energy for electrical power generation.


Bi2Te3 SiGe solar energy parabolic trough collector thermoelectric generator heat transfer fluids 


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The authors would like to thank the Management and Principal of Mepco Schlenk Engineering College (Autonomous), Sivakasi for providing us the state of art facilities to carry out this proposed research work in the Mepco Research Centre in collaboration with Anna University Chennai, Tamil Nadu, India.


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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  1. 1.Department of Electrical and Electronics EngineeringMepco Schlenk Engineering College (Autonomous)SivakasiIndia

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