Journal
NANO ENERGY
Volume 1, Issue 2, Pages 290-296Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nanoen.2011.11.007
Keywords
Nanofluids; Thermal conductivity; Artificial Neural Network
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Funding
- University of Padova, Italy, Progetto di Ricerca di Ateneo, Bando [CPDA072758]
- Regione Veneto, Italy, L.R. [9, 08.001.40078]
- CariVerona Foundation, Verona, Italy, Ricerca Scientifica e Tecnologica, Sviluppo di tecnologie a ridotto consumo energetico, impiego di materiali a basso impatto ambientale e implementazione di sistemi per la sicurezza alimentare
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This paper presents a 3-input and a 4-input Artificial Neural Network (ANN) model for the prediction of the thermal conductivity of oxide-water nanofluids. Both models account for the effect of temperature, nanoparticle volume fraction, and nanoparticle thermal conductivity, whereas the 4-input model also considers the effect of nanoparticle cluster average size. The models have been trained on a set of data obtained by the present authors and tested both with cross-validation and on data coming from other authors. Both models show a reasonable agreement in predicting experimental data, even if the 4-input model exhibits better performance. The inclusion of the cluster average size within the input variables improves the predicting performance of the ANN nanofluid thermal conductivity model; however, this parameter is usually missing from data presented in literature. The characteristic parameters of the presented ANN models are fully reported in the paper. (C) 2011 Elsevier Ltd. All rights reserved.
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