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Início - ICHMT DL Ano atual Arquivos Comitê executivo Centro Internacional para Transferência de Calor e Massa

POOL BOILING INVESTIGATION OF Al2O3/WATER NANOFLUID ON FLAT PLATE

DOI: 10.1615/ICHMT.2011.TMNN-2011.310
page 8

Zahra Shahmoradi
Isfahan University of Technology, Chemical Engineering Department Isfahan 84156-83111, Iran

Nasrin Etesami
Department of Chemical Engineering, Isfahan University of Technology

Mohsen Nasr Esfahany
Department of Chemical Engineering, Isfahan University of Technology

Resumo

Nucleate pool boiling of Al2O3 based aqueous nanofluid on flat heater has been studied experimentally. Reduction in nucleate boiling heat transfer has been observed at three volume fraction of nanoparticles (0.1, 0.05, 0.02%.vol). Results showed that the rate of heat transfer falls with solid concentration. Also enhancement in critical heat flux (CHF) has been observed. The CHF enhancement increases with volume fraction of nanofluids. In addition, the contact angle of the drop on basic surface before boiling is bigger than that on nanofluid boiled surface.

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