A theoretical study of Cu-H2O nano-fluid effect on heat transfer enhancement of a solar water heater

被引：3

作者：

Kabeel A.E. ^{[1
]}

El-Said E.M.S. ^{[2
]}

El-Agouz S.A. ^{[1
]}

机构：

[1] Mechanical Power Engineering Department, Faculty of Engineering, Tanta University, Tanta

[2] Industrial Engineering Department, Faculty of Engineering, Fayoum University, Fayoum

来源：

International Journal of Ambient Energy | 2017年 / 38卷 / 03期

关键词：

flat-plate collector; heat transfer enhancement; nano-fluid; Solar energy;

D O I：

10.1080/01430750.2015.1086674

中图分类号：

学科分类号：

摘要：

In the present work, an attempt has been made to enhance the heat transfer in a solar water heater by using Cu nano-particles dispersed in water for various concentrations ranging from 0% to 5%. Considerable improvement in the solar collector efficiency is obtained by increasing the nano-particle concentration up to 17.5 for a concentration of 5% and for a mass flow rate ratio of 10. The outlet water temperature increases by increasing the nano-particle concentration up to 8.35% for a concentration of 5% and for a mass flow rate ratio of 5. The study showed that the solar heater collecting area takes into account significant factors for increasing the outlet temperature. An increase in the collecting area of the solar water heater by 6 times could increase the water temperature by 39% for a 5% nano-particle volume fraction. The helical heat exchanger effectiveness is increased up to 65.71 for a concentration of 5% for a mass flow rate ratio of 10. © 2015 Informa UK Limited, trading as Taylor & Francis Group.

引用

页码：286 / 294

页数：8

共 20 条

[1]

Asirvatham L.G., Vishal N., Gangatharan S.K., Mohanlal D., Experimental Study on Forced Convective Heat Transfer with Low Volume Fraction of CuO Water Nanofluid, Energies, 2, pp. 97-110, (2009)

[2]

Daungthongsuk W., Wongwises S., A Critical Review of Convective Heat Transfer of Nanofluids, Renewable and Sustainable Energy Reviews, 11, 5, pp. 797-817, (2007)

[3]

Duffie J.A., Beckman W.A., Solar Engineering of Thermal Processes, (2006)

[4]

Farajollahi B., Etemad S.G., (2009)

[5]

Hollands K.G.T., Unny T.E., Raithby G.D., Konicek L., Free Convection Heat Transfer Across Inclined Air Layers, Journal of Heat Transfer, 98, 2, pp. 189-193, (1976)

[6]

Kabeel A.E., El-Said E.M.S., A Hybrid Solar Desalination System of Air Humidification-dehumidification and Water Flashing Evaporation: Part I. A Numerical Investigation, Desalination, 320, pp. 56-72, (2013)

[7]

Kays W.M., Crawford M.E., Convective Heat and Mass Transfer, (1980)

[8]

Kazeminejad H., Numerical Analysis of Two Dimensional Parallel Flow Flat-plate Solar Collectors, Renewable Energy, 26, pp. 309-323, (2002)

[9]

Khandekar S., Joshi Y.M., Mehta B., Thermal Performance of Closed Two-phase Thermosyphon Using Nanofluids, International Journal of Thermal Sciences, 47, pp. 659-667, (2008)

[10]

Kumar P.C.M., Kumar J., Suresh S., Heat Transfer and Friction Factor Studies in Helically Coiled Tube using Al<sub>2</sub>O<sub>3</sub>/water Nanofluid, European Journal of Scientific Research, 82, pp. 161-172, (2012)

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