International Journal for Research in Applied Science & Engineering Technology (IJRASET) ISSN: 2321-9653; IC Value: 45.98; SJ Impact Factor: 7.429 Volume 8 Issue V May 2020- Available at www.ijraset.com Nu= 0.023* (Re)0.8 (Pr)n
(n=0.3 for cooling and n=0.4 for heating) & Pr from table of Thermophysical properties of fluids
Heat transfer coefficient - h = (Nu*k)/Dh
(W/m2K)
where k=thermal conductivity (W/mK) OR
Effectiveness of a Heat Exchanger ε = Thin – Tho / Thin – Tci
This equation can be used to compare two heat exchanger. V.
CONCLUSION
By studying and analyzing various literature we studied that replacing of the conventional coolant by the modern NANOCOOLANT will definitely prove comparatively effective. The results which will be obtained by calculation studied above is the evidence of increase in the efficiency of the radiator. The following inferences can be drawn successfully after reviewing various research paper from reputed journal: A. The heat transfer rate of nanofluid is greater than that of conventional coolant as the conductivity of the Alumina is higher than the simple coolant. B. The size of the radiator is reduced in the case if we want same heat transfer rate as that of the conventional coolant. C. Hence it becomes possible to improve the aerodynamic shape of the car which would reduce the air drag. D. The reduced air drag, improved heat transfer rate, better engine cooling reducing the average fuel consumption. E. The volumetric efficiency of the engine cylinder is also improved due to better and faster cooling. F. The most important the NOx emission is also considerably reduced as the engine temperature is reduced below 110*C. Thus we finally conclude that it is very beneficial in all-round aspects improving the overall vehicle performance and covering all important aspects. REFERENCES [1]
Urvi Tushar Nagar , Bharatkumar Manharlal Trivedi, “Performance Analysis And Design Of Automobile Radiator”, International Journal of Advance Engineering and Research Development Volu me 4, Issue 11, November 2017.
[2]
M.Dhanunjaiah, “Design & Analysis of Radiator”, 10th International Conference on recent Innovations in Science, Engineering and Management(7 July 2017).
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S.M. Peyghambarzadeha, S.H. Hashemabadib,*, M. Seifi Jamnania, S.M. Improving the cooling performance of automobile radiator with Al2O3/water nanofluid a Chemical Engineering Department, Islamic Azad University, Mahshahr Branch, Mahshahr, Iran 2011.
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D. Tirupathi Rao, S.Ravibabu ‘Experimental investigation of cooling performance of an Automobile radiator using Al2O3-Water+ethylene Glycol nanofluid” , International Journal of Engineering Research and Development JULY 2015
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S. Senthilrajaa*, K. Vijayakumarb, R. Gangadevic A Comparative Study On Thermal Conductivity Of Al2o3/Water, Cuo/Water And Al2o3 – Cuo/Water Nanofluids aResearch Scholar, Faculty of Mechanical Engineering, Anna University, Chennai bDepartment of Mechanical engineering, Vivekanandha Institute of Engineering & Technology for Women, Tiruchengode, India. cDepartment of Mechatronics engineering, SRM University, Chennai.2015.
[6]
Sona Sarli1, Majid Saghi1, Behrokh Asadi1, Reza Aghayari2 and Heydar Maddah Investigation on Physical Properties of Al2O3/Water Nano Fluid Department of Chemistry, Sciences Faculty, Arak Branch, Islamic Azad University, Arak, Iran2015
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Aditya Choure, RavibalaPatil, KishorDolare, (2016)“Performance investigation of automobile radiator using Al2O3 as base nanofluid.”(International Journal Of Mechanical And Production Engineering) 4 (2016) 159162
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R.Harsh, Hitesh Srivastav, Prabhat Balkrishnan, Vivek Saina, D.Senthil Kumar, K.S.Rajni,S.Tirumalini. “Study Of Heat Transfer Characteristics Of Nanofluids In An Automobile Radiator”. Department Of Mechanical Engineering,Amrita School Of Engineering, Amrita Vishwa Vidhyapeetham,Coimbatore-641 112,Tamilnadu,India 2018
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