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SCIENCE CHINA Technological Sciences, Volume 60 , Issue 8 : 1168-1174(2017) https://doi.org/10.1007/s11431-017-9079-6

Study on the performance of TEG with heat transfer enhancement using graphene-water nanofluid for a TEG cooling system

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  • ReceivedMar 27, 2017
  • AcceptedMay 31, 2017
  • PublishedJul 19, 2017

Abstract

Improvement of the heat transfer effect of cold side of a thermoelectric generator (TEG) is one of the approaches to enhance the performance of the TEG systems. As a new type of heat transfer media, nanofluids can enhance the heat transfer performance of working liquid significantly. In this study, the performance of a commercial TEG with graphene-water (GW) nanofluid as coolants in a minichannel heat exchanger is investigated experimentally at low temperatures. The results show that the output power of TEG increases with the flow rate under 950 mL/min. However, the fluid flow rate has no influence on the output power of TEG with higher flow rate (larger than 950 mL/min) when the heat transfer dynamic balance state of the system is reached. The optimal concentration and flow rate of nanofluid are 0.1 wt% and 950 mL/min, respectively. At the optimal conditions, the improved voltage, output power and conversion efficiency with GW nanofluid applied in the cooling system are increased by 11.29%, 21.55% and 3.5% in comparison with those with only water applied, respectively.


Funded by

National Natural Science Foundation of China(51590902 ,&, 51476095)

Natural Science Foundation of Shanghai(14ZR1417000)

Program for Professor of Special Appointment(Young Eastern Scholar,Grant No. QD2015052)


Acknowledgment

This work was supported by the National Natural Science Foundation of China (Grant Nos. 51590902 & 51476095), the Natural Science Foundation of Shanghai (Grant No. 14ZR1417000), the Key Subject of Shanghai Polytechnic University (Material Science and Engineering, Grant No. XXKZD1601), and the Program for Professor of Special Appointment (Young Eastern Scholar, Grant No. QD2015052) at Shanghai Institutions of Higher Learning.


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