Application of nanofluids for heat transfer enhancement in solar water heaters

Subject Areas :

محمد رضا  جعفری نصر ¹ (استاد مهندسی شیمی، دانشکده مهندسی شیمی و نفت، دانشگاه آزاد اسلامی واحد علوم و تحقیقات، تهران، ایران)
سیده فاطمه  حسینی ² (کارشناسی ارشد مهندسی شیمی، دانشکده مهندسی شیمی و نفت، دانشگاه آزاد اسلامی واحد علوم و تحقیقات، تهران، ایران)

Received: 2018-05-13 Accepted : 2018-06-13 Published : 2018-08-23

Keywords: Simulation, Modeling, Solar Energy, collector, Free convection heat transfer, Solar heater water, 2D,

Abstract :

In this study, techniques for heat transfer enhancement reviewed. Application of nanofluids was studied as a new technique for more energy saving and heat recovery. Transys version17 simulation was used for prediction of thermal efficiency of water and various nanofluids in a flat plate solar collector. Nano fluids that were used in this simulation analysis are copper oxide, copper, and alumina. The results show that the heat transfer and thermal efficiency of copper nanofluid are greater than other working fluids while the exergy efficiency of alumina is greater. Gambit 2.4.6 was used for our CFD calculation along with the Fluent version17.2. We used a model to numerically simulate the heat transfer. The governing equations and corresponding boundary conditions are converted to dimensionless forms and solved numerically by the finite element method. The results show that efficiency of copper is 67% and it is greater than alumina and copper oxide efficiency.

References:

[1] جعفری نصر، محمدرضا، و ذوقی، علی تقی، فصلنامه تحقیق، شماره 41، تابستان 1380 

 [2] Jafari Nasr, M.R. and Polley, G.T.; Chem. Eng. Tech. 23, 267-272, 2000.

[3] Polley, G.T., Wilson, B.L., Pugh, S.J.; Heat Transfer Eng. 23, 24-37, 2002.

[4] Jardin, F. and Krueger, A.W.; “Proceeding of the International Conference on Petroleum Behavior and Fouling”, American Institute of Chemical Engineers, USA; 466-474, 2002.

[5]  مظفری، سید حسین؛ جعفری نصر، محمدرضا؛ یازدهمین کنگره ملی مهندسی شیمی ایران، آذرماه 1385

[6] Reay, D. A.; Heat Recovery Systems and CHP 8, Issue 4, 309-314, 1988.

[7] Butterworth, D.; Guy, A.R.; Welkey, J.J.; “Advances in Industrial Heat Transfer”, IChemE, 1995.

[8] Schlunder, E.U.; “Heat Exchanger Design Handbook”, Taylor Francis Inc.; 1983.

[9] جعفری نصر، محمدرضا؛ همت، آیدا؛ سالم، امین؛ پژوهش نفت، شماره 67، 1390.

[10] جعفری نصر ، محمدرضا؛ شفقت، امین؛ نشریه علمی-ترویجی تحقیق در علوم و مهندسی نفت، شماره 52، پاییز و زمستان 1384

[11] Ekramian, E.; Etemad, S.Gh.; Haghshenasfard, M.; International Journal of Theoretical and Applied Nanotechnology 2014, 1929-1248, 2014.

[12] Hung, F.; Zheng, J.; Journal of the Energy Institute 90, Issue 6, 2017.

[13] Bahiraei, M.; Rahmani, R.; Yaghoobi, A.; Applied Thermal Engineering 133, 2018.

[14] Abbas Sahi, S.; Abbod, M. H.; Kadhim, S.Q.; International Journal of Energy and Environment 6, 317-330, 2015.

[15] Helvaci, H. U.; Khan, Z. A.; Energy Conversion and Management 106, 139-150, 2015.

[16] Sreekala, P.; Mathew, Bobin K.; International Journal of Engineering Sciences and Research Technology, 2277-9655, 2016.

[17] Nasrin, R.; Alim, M. A.; International Journal of Heat and Technology 33, 330-203, 2015.

[18] Goutam, S.; “Heat Transfer Performance Investigation of Nanofluids Flow in Pipe“, Ph.D. Thesis, University of Glasgow, 2016.

[19] Tidy, T.E.R,; “Modelling of Volumetric Solar Receivers With Nanoparticle Suspensions“, Ph.D Thesis, University of Evora, 2015.