Synthesize of Hydrophilic Graphene and Experimental Investigation of Its Addition on the Improvement of Heat Transfer Coefficient in Water/Ethylene Glycol System

Document Type : Research Article

Authors

Department of Petroleum and Chemical Engineering, Science and Research Branch, Islamic Azad University, Tehran, I.R. IRAN

Abstract

One of the common methods in the size reduction of heat transfer equipment is increasing the convective heat transfer coefficient of the base fluid. The main aim of this study is to produce hydrophilic graphene and investigating its potential in the improvement of convective heat transfer coefficient in water/ethylene glycol system in the cooling cycle. Graphene was synthesized via electrochemical methods and its stability in the water was enhanced via the loading of silica nanoparticles. The synthesized graphene was investigated via FT-IR and XRD analysis and SEM and TEM images and its successful fabrication was confirmed. The different weight percent of synthesized graphene-silica including 0.25, 0.5, 0.75, 1, 1.5% were added to water/ethylene glycol fluid to investigate the improvement of convective heat transfer coefficient with this nanofluid in an experimental designed setup. The obtained experimental data for Nusselt number and pressure drop for pure water fluid was compared with those calculated via the available models and it was found that the system is able to predict the results. The setup was examined with nanofluid with different concentrations of graphene/silica and it was found that by adding 1 wt.% nanoparticle into the based fluid the convective heat transfer coefficient improved at least 40% while the pressure drop showed about 30% increment. Overall, the findings of the current study support the potential of water/ethylene glycol/graphene-silica nanofluid for use in heat transfer equipment.

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References

[1] Sandhya D., Reddy M.C.S., Rao V.V., Improving the Cooling Performance of Automobile Radiator with Ethylene Glycol Water-Based TiO2 Nanofluids, Int. Commun. Heat Mass Trans., 78: 121-126 (2016).
[2] Subhedar D.G, Ramani B.M, Gupta A., Experimental Investigation of Heat Transfer Potential of Al2O3/Water-Mono Ethylene Glycol Nanofluids as a Car Radiator Coolant, Case Studies Therm. Eng., 11: 26-34 (2018).
[3] Raja M., Vijayan R., Dineshkumar P., Venkatesan M., Review on Nanofluids Characterization, Heat Transfer Characteristics and Applications, Renew. Sust. Energ. Rev., 64: 163-173 (2016).
[4] Ali Akbari O., Karimipour A., Toghraie Semiromi D., Zarringhalam M., Ahmadi Sheikh Shabani G., Experimental Investigation of the Effect of Suspended Nanoparticles into Conventional Fluid on the Heat Transfer Improvement, J. Solid Mechan. Eng. 9(2): 209-220 (2016).
[5] ایزدخواه، میرشهاب‌الدین؛ عرفان نیا، حمید؛ مرادخانی، حامد، بررسی خصوصیات ترموفیزیکی نانوسیالات بر پایه آب ـ اتیلن‌گلایکول با استفاده از روش‌های شبیه‌سازی دینامیک مولکولی غیرتعادلی و دینامیک سیالات محاسباتی، ماهنامه علمی پژوهشی مهندسی مکانیک مدرس، (7)16: 153 تا 162 (1395).
[6] Wang X.Q., Mujumdar A.S., Heat Transfer Characteristics of Nanofluids: A Review, Int. J. Therm. Sci., 46(6): 1-19 (2007).
[7] Nourafkan E., Karimi G., Moradgholi J, Experimental Study of Laminar Convective Heat Transfer and Pressure Drop of Cuprous Oxide/Water Nanofluid Inside a Circular Tube, Exp. Heat Transfer, 28(1): 58–68 (2015).
[8] کاظمی بیدختی، امین، اهمیت نانوسیال­های دارای نانولوله‌های کربنی اصلاح سطح شده در افزایش توان گرمایی مبدل‌های پوسته لوله و صفحه‌ای، نشریه شیمی و مهندس شیمی ایران، (3)38: 243 تا 252 (1398).
[9] Sadeghinezhad E., Mehrali M., Saidur R., Mehrali M., Tahani Latibari S., Akhiani A.R., Metselaar H.S.C., A Comprehensive Review on Graphene Nanofluids: Recent Research, Development and Applications, Energy Convers. Manag., 111: 466-487 (2016).
[10] Chen L., Xie H, Silicon Oil Based Multi-Walled Carbon Nano Tubes Nano Fluid with Optimized Thermal Conductivity Enhancement, Colloids Surf. A Physicochem. Eng. Asp., 352(1-3): 136-140 (2009).
[11] Sun B., Zhou G., Zhang H., Synthesis, Functionalization, and Applications of Morphology-Controllable Silica-Based Nanostructures: A Review, Prog. Solid State Chem., 44(1): 1-19 (2016).
[12] Dume B., Carbon Sheets Offer Cool Solution for Computers, Science, 1: 35-42 (2010).
[13] Yang K., Chen B., Zhu L., Graphene-Coated Materials Using Silica Particles as a Framework for Highly Efficient Removal of Aromatic Pollutants in Water, Sci. Rep. 5: 1-13 (11641) (2015).
[14] Zhang W.L., Choi H.J., Silica-Graphene Oxide Hybrid Composite Particles and Their Electroresponsive Characteristics, Langmuir 28: 7055-7062 (2012).
[15] Kole M., Dey T.K., Investigation of Thermal Conductivity, Viscosity, and Electrical Conductivity of Graphene-Based Nanofluids, J. Appl. Phys. 113: (084307) (2013).
[16] Sadri R., Hosseini M., Kazi, S.N., Bagheri S., Zubir N., Ahmadi G., Dahari M., Zaharini T., A Novel, Eco-Friendly Technique for Covalent Functionalization of Graphene Nanoplatelets and the Potential of Their Nanofluids for Heat Transfer Applications, Chem. Phys. Lett. 675: 92–97 (2017).
[17] Zhang H., Wang S., Lin Y., Feng M., Wu Q., Stability, Thermal Conductivity, and Rheological Properties of Controlled Reduced Graphene Oxide Dispersed Nanofluids, Appl. Therm. Eng. 119: 132–139 (2017)
[18] Rabbani Esfahani M., Mohseni Languri E., Exergy Analysis of a Shell-And-Tube Heat Exchanger Using Graphene Oxide Nanofluids, Exp. Therm. Fluid Sci., 83: 100–106 (2017)
[19] Tiwari S.K, Huczko A., Oraon R., De Adhikari A., Nayak G.C., Facile Electrochemical Synthesis of Few Layered Graphene from Discharged Battery Electrode And its Application for Energy Storage, Arab. J. Chem., 10: 556-565 (2017).
[20] Naphon P., Wongwises S., A review of Flow and Heat Transfer Characteristics in Curved Tubes, Renew. Sust. Energ. Rev.  64: 163-173 (2016).
[21] Singh P., Sharma P., Gupta R., Wanchoo R.K., Heat Transfer Characteristics of Propylene Glycol/Water Based Magnesium Oxide Nanofluid Flowing Through Straight Tubes and Helical Coils, J. Therm. Eng. 4(1): 1737-1755 (2018).
[22] Austen D.S., Soliman H.M., Laminar Flow and Heat Transfer in Helically Coiled Tubes with Substantial Pitch, Exp. Therm. Fluid Sci., 1(2): 183–194 (1998).
[23] Kalb C.E., Seader J.D., Fully Developed Viscous Flow Heat Transfer in Curved Circular Tubes with Uniform Wall Temperature, AIChE J., 20: 340-346 (1974).
[24] Xin R.C, Ebadian M.A., The Effects of Prandtl Numbers on Local and Average Convective Heat Transfer Characteristics in Helical Pipes, J. Heat Transf. 119: 467–473 (1997).
[25] Lightfoot E.N., Bird R.B., Stewart W.E., "Transport Phenomena", ‎John Wiley & Sons Inc., New Yorck (2002).
[26] Ali S., Haider Zaidi A., Head Loss and Critical Reynolds Numbers for Flow in Ascending Equiangular Spiral Tube Coils, Ind. Eng. Chem. Process Des. Dev. 18(2): 349–353 (1979).
[27] Duangthongsuk W., Wongwises S., An Experimental Investigation on the Heat Transfer and Pressure Drop Characteristics of Nanofluid Flowing in Micro-Channel Heat Sink with Multiple Zigzag Flow Channel Structures, Exp. Therm. Fluid Sci., 87: 30-39 (2017).
[28] Bashirnezhad K., Bazri S., Safaei M.R., Goodarzi M., Dahari M., Mahian O., Dalkılıca A.S., Wongwises S., Viscosity of nanofluids: A Review of Recent Experimental Studies, Int. Commun. Heat Mass Trans. 73: 114-123 (2016).
[29] Hentschke R., On the Specific Heat Capacity Enhancement in Nanofluids. Nanoscale Res. Lett. 11(88): 1-11 (2016)
[30] Feng L., Gao G., Huang P., Wang X., Zhang C., Zhang J., Guo S., Cui D., Preparation of Pt Ag Alloy Nanoisland/Graphene Hybrid Composites and Its High Stability and Catalytic Activity in Methanol Electro-Oxidation, Nanoscale Res. Lett., 6(551): 1-10 (2011).
[31] Shearer C.J., Slattery A.D., Stapleton A.J., Shapter J.G., Gibson C.T., Accurate Thickness Measurement of Graphene, Nanotechnology, 27: 1-10 (2016).

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