Study on the performance of TEG with heat transfer enhancement using graphene-water nanofluid for a TEG cooling system
| Autor: | Yuanyuan Wang, Jianhui Mao, Huaqing Xie, Zhen Li, Zihua Wu, Yihuai Li, Jiaojiao Xing |
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| Rok vydání: | 2017 |
| Předmět: |
Chemistry
020209 energy Heat transfer enhancement Energy conversion efficiency General Engineering Thermodynamics 02 engineering and technology Coolant Nanofluid Thermoelectric generator Heat exchanger Heat transfer 0202 electrical engineering electronic engineering information engineering Water cooling General Materials Science Composite material |
| Zdroj: | Science China Technological Sciences. 60:1168-1174 |
| ISSN: | 1869-1900 1674-7321 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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