Numerical and Experimental Investigation of the Effect on Heat Transfer of Nanofluid Usage in Mini/Micro Channels

Yıl 2018, Cilt: 5 , 1 - 7, 07.09.2018

Beytullah Erdoğan , Adnan Topuz , Tahsin Engin Ali Baş Alper Yeter

https://doi.org/10.17350/HJSE19030000113

Cited By: 1

Öz

I n this study, the thermal performance of Al2 O3 , TiO2 and ZnO nanofluid in horizontal microchannels was investigated experimentally and numerically. Al2 O3 13nm , TiO2 10-25nm and ZnO 18nm nanoparticles in water to prepare nano-powders with 0.5%, 0.7% and 1.0% volumetric concentration.A set of experiments was set up for experimentation. For this purpose, micro-channels of 20 cm in length were used at different surface temperatures 15, 25, 40 ° C from different materials 400, 750, 1000 μm . In addition, nanofluids with different inlet temperatures, volumetric flow rates 20, 35, 50 mL/min and concentration ratios are used using nanofluids. Temperature, flow and pressure measurements are based on heat transfer, heat transfer coefficient, Nusselt number, pressure drop and friction factor. The values required for the calculations are measured separately. The effects of parameters such as microchannel diameter, particle type, flow velocity and volumetric ratio on the friction factor, temperature distribution, pressure drop, Reynolds and Nusselt numbers with Taguchi method will be determined in the flow program and compared with the experimental study. In addition, this study will be a preliminary model for the design and analysis of new generation cooling radiators with nanofluid which are not used in diesel engines conforming to Euro 5/6 emissions norms.

Anahtar Kelimeler

Microchannel, Nanochannel, Reynolds Number, Nusselt Number, Numerical Analysis

Kaynakça

• 1. Heyhat MM, Kowsary F, Rashidi AM, Momenpour MH, Amrollahi A. Exp. investigation of laminar convective heat transfer and pressure drop of water-based Al2 O3 nanofluids in fully developed flow regime. Exp. Thermal and Fluid Science, 44 (2013) 483–489.
• 2. Şahin B (2006), Çomaklı K, Çomaklı Ö, Yılmaz M. Nanoakışkanlar ile ısı transferinin iyileştirilmesi (Heat transfer rate improvement with nanofluids). Mühendis ve Makina, 47 (2006), 559, 29-34.
• 3. Karimzadehkhouei M, Yalçın SE, Şendur K, Mengüç MP, Koşar A. Pressure drop and heat transfer characteristics of nanofluids in horizontal microtubes under thermally developing flow conditions. Experimental Thermal and Fluid Science 67 (2015) 37–47.
• 4. Choi S. Nanofluids for improved efficiency in cooling systems. Argonne National Laboratory, April 18-20 (2006).
• 5. Azmi WH, Sharma KV, Sarma PK, Mamat R, Najafi G. Heat transfer and friction factor of water based TiO2 and SiO2 nanofluids under turbulent flow in a tube. International Communications in Heat and Mass Transfer, 59 (2014) 30–38.
• 6. Bhanvase BA, Sarode MR, Putterwar LA, Abdullah KA, Deosarkar MP, Sonawane SH. Intensification of convective heat transfer in water/ethylene glycol based nanofluids containing TiO2 nanoparticles. Chemical Engineering and Processing, 82 (2014) 123–131.
• 7. Haghighi EB, Saleemi M, Nikkam N, Anwar Z, Lumbreras I, Behi, M, Mirmohammadi SA, Poth H, Khodabandeh R, Toprak M, Muhammed M, Palm B. Cooling performance of nanofluids in a small diameter tube. Exp. Thermal and Fluid Science, 49 (2013) 114–122.
• 8. Ho CJ, Wei LC, Li ZW. An experimental investigation of forced convective cooling performance of a microchannel heat sink with Al2O3/Water nanofluid. Applied Thermal Engineering, 30 (2010) 96-103.
• 9. Chen CH, Ding CY. Study on the thermal behavior and cooling performance of a nanofluid-cooled microchannel heat sink. Int. J. of Thermal Sciences, 50 (2011) 378-384.
• 10. Bhattacharya P, Samanta AN, Chakraborty S. Numerical study of conjugate heat transfer in rectangular microchannel heat sink with Al2 O3 /H2 O nanofluid. Heat and Mass Transfer, 45 (2009) 1323–1333.
• 11. Raisi A, Ghasemi B, Aminossadati SM. A numerical study on the forced convection of laminar nanofluid in a microchannel with both slip and no-slip conditions. An International Journal of Computation and Methodology, 59/2 (2011) 114-129.
• 12. Tsai TH, Chein R. Performance analysis of nanofluid-cooled microchannel heat sinks, Thermal Conductivity of Nanoparticle - Fluid Mixture. Journal of Thermophysics and Heat Transfer, 13 (2007) 474-480.
• 13. Lelea D. The performance evaluation of Al2 O3 /water nanofluid flow and heat transfer in microchannel heat sink. International Journal of Heat and Mass Transfer, 69 (2011) 264-275.