Nanofluids Heat Conduction Modeling Based on Nanolayer Thickness

سال انتشار: 1390
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 875

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شناسه ملی سند علمی:

ICHEC07_454

تاریخ نمایه سازی: 25 فروردین 1394

چکیده مقاله:

The nano particles have demonstrated great potential to improve the heat transfer characteristics of heat transfer fluids. Previously developed correlations have not completely predicted the anomalous increase in the thermal conductivity of nanofluids. In this paper, possible parameters responsible for this increase were studied. The heat transfer profile in the nanolayer region was combined with other parameters such as volume fraction, particle radius, thermal conductivity of the fluid, particle and nanolayer, to formulate a new correlation. Results predicting the thermal conductivity of nanofluids using the new correlation were compared with experimental results as well as studies by other researchers. Overall the comparison of the results obtained for the CuO/Water and TiO2/Water nanofluids studied shows that the correlation proposed is in closest proximity in predicting the experimental results for the thermal conductivity of a nanofluid. Also a parametric study to understand how a number of factors affect the thermal conductivity of nanofluids was performed using the newly developed correlation and led to some important conclusions

نویسندگان

ahmad azari

Islamic Azad University Omidieh Branch, I.R. Iran Chemical Engineering Department, AmirKabir University of Technology, Mahshahr Campus, I. R. Iran

mansour kalbasi

Chemical Engineering Department, AmirKabir University of Technology, Mahshahr Campus, I. R. Iran

masoud rahimi

CFD Research Center, Chemical Engineering Department, Razi University, Taghe Bostan, Kermanshah, Iran

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