Effect of particle concentration,temperature and surfactant on surface tension of nanofluids |
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| Affiliation: | 1. Departamento de Física Aplicada, Facultade de Ciencias, Universidade de Vigo, 36310 Vigo, Spain;2. Área de Máquinas e Motores Térmicos, Escola de Enxeñería Industrial, Universidade de Vigo, 36310 Vigo, Spain;3. Istituto per le Tecnologie della Costruzione, Consiglio Nazionale delle Ricerche, 35127 Padova, Italy;1. Department of Thermal Sciences, Wroclaw University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50–370 Wrocław, Poland;2. Univ Rennes, LGCGM, 35000 Rennes, France;3. Department of Experimental Physics, Rzeszow University of Technology, Rzeszow, Poland;4. Institut für Luft, und Kältetechnik gGmbH, Bertolt-Brecht-Allee 20, 01309 Dresden, Germany |
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| Abstract: | Heat transfer performance with nanofluids depends on the thermo physical properties of the suspension. Surface tension is an important property for heat transfer calculation. In this paper, various parameters that effect on the surface tension of nanofluids such as nanofluid preparation method, effect of volume fraction, temperature, and surfactants on nanofluids have been studied. Additionally, precise assessments on the theoretical correlations related to the surface tension of nanofluids have also been included. Based on the existing experimental results, surface tension augments respectively with volume fraction intensification. Surface tension of nanofluids decreases accordingly with the increase of temperature and surfactant concentration. Nevertheless, there have been some contradictory results on the effect of volume fraction and surfactant on surface tension of nanofluids. |
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