THERMAL SCIENCE

International Scientific Journal

External Links

THE HEAT TRANSFER ENHANCEMENT OF CONCURRENT FLOW AND COUNTER CURRENT FLOW CONCENTRIC TUBE HEAT EXCHANGERS BY USING HEXAGONAL BORON NITRIDE/WATER NANOFLUID

ABSTRACT
Heat exchangers are used in many applications including chemical, oil and gas power generation, refrigeration, pharmaceuticals and food processing. Because of their widespread usage, they have various types to serve at different working conditions. Increasing the performance of heat exchangers has become a very interesting field of study since the efficiency of various industrial and domestic systems depend on them. In this study, a coaxial double tube experimental setup was prepared, and the effect of using nano hexagonal boron nitride nanofluid as hot working fluid on the heat transfer performance increase was investigated. The experiments were carried out in concurrent flow and counter flow conditions for various hot fluid flow rates to obtain the heat transfer coefficients. Nano hexagonal boron nitride obtained in powder form was used to prepare the nanofluid by a two-step method. 4kg nanofluid containing 2% nano hexagonal boron nitride with 0.5% Triton X-100 as a surfactant in terms of mass ratio was prepared for the experiments. Heat transfer experiments were carried out three times by using the prepared nano hexagonal boron nitride/water nanofluid and pure water as hot fluid to reach more precise results. In the result of this study, the total heat transfer coefficient showed an average improvement of 48.78% for the concurrent flow heat exchanger, while an average improvement of 0.36% was observed in the counter flow conditions compared to the base fluid. This study shows the potential of application of nano hexagonal boron nitride/water nanofluid in heat management applications.
KEYWORDS
PAPER SUBMITTED: 2018-02-13
PAPER REVISED: 2018-08-14
PAPER ACCEPTED: 2018-09-13
PUBLISHED ONLINE: 2018-10-06
DOI REFERENCE: https://doi.org/10.2298/TSCI180213283S
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2019, VOLUME 23, ISSUE Issue 6, PAGES [3917 - 3928]
REFERENCES
  1. Das, S. K., et al., Nanofluids: Science and Technology. United States of America: John Wiley & Sons, 2008, pp. 1-101
  2. Das, P. K., et al., Synthesis and Characterization of TiO2-Water Nanofluids with Different Surfactants, International Communications in Heat and Mass Transfer, 75 (2016), pp. 341-348
  3. Teng, T. P., Thermal Conductivity and Phase-Change Properties of Aqueous Alumina Nanofluid, Energy Conversion and Management, 67 (2013), pp. 369-375
  4. Wang, H., et al., Comparison of Dye Degradation Efficiency using ZnO Powders with Various Size Scales, Journal of Hazardous Materials, 141(2007), 3, pp. 645-652
  5. Sajjadnejad, M., et al., Microstructure-Corrosion Resistance Relationship of Direct and Pulse Current Electrodeposited Zn-Tio2 Nanocomposite Coatings, Ceramics International, 41 (2015), 1, pp. 217-224
  6. Zhang, B., et al., Preparation of SiO2/TiO2 Janus Particles by Electrostatic Assembly, Hydrolysis and Calcination, Particuology, 11 (2013), 5, pp. 574-580
  7. Ma, H. L., et al., Preparation and Characterization of Superparamagnetic Iron Oxide Nanoparticles Stabilized by Alginate, International Journal of Pharmaceutics, 333 (2007), 1, pp. 177-186
  8. Nasrollahzadeh, M., Sajadi, S. M., Green Synthesis of Copper Nanoparticles Using Ginkgo Biloba L. Leaf Extract and Their Catalytic Activity for The Huisgen
  9. Yang, Z., et al., A Study on Carbon Nanotubes Reinforced Poly (Methyl Methacrylate) Nanocomposites. Materials Letters, 59 (2005), 17, pp. 2128-2132
  10. Xu, J. Z., et al., Fabricating Gold Nanoparticle-Oxide Nanotube Composite Materials by a Self-Assembly Method, Journal of Colloid and Interface Science, 290 (2005), 2, pp. 450-454
  11. Das, S. K., et al., Heat transfer in Nanofluids—A Review., Heat Transfer Engineering, 27 (2006), 10, pp. 3-19
  12. Keblinski, P., et al., Nanofluids for Thermal Transport, Materials Today, 8 (2005), 6, pp. 36-44
  13. Wang, X. Q., Mujumdar, A. S., Heat Transfer Characteristics of Nanofluids: A Review, International Journal of Thermal Sciences, 46 (2007), 1, pp. 1-19
  14. Peyghambarzadeh, S. M., et al., Improving the Cooling Performance of Automobile Radiator with Al2O3/Water Nanofluid, Applied Thermal Engineering, 31 (2011), 10, pp. 1833-1838
  15. Kabeel, A. E., et al., The Effect of Using Nano-Particles on Corrugated Plate Heat Exchanger Performance, Applied Thermal Engineering, 52 (2013), 1, pp. 221-229
  16. Colangelo, G., et al., A New Solution for Reduced Sedimentation Flat Panel Solar Thermal Collector using Nanofluids, Applied Energy, 111 (2013), pp. 80-93
  17. Sonawane, S. S., et al., Study on Concentric Tube Heat Exchanger Heat Transfer Performance using Al2O3-Water Based Nanofluids, International Communications in Heat and Mass Transfer, 49 (2013), pp. 60-68
  18. Sözen, A., et al., Improving the Thermal Performance of Diffusion Absorption Refrigeration System with Alumina Nanofluids: An Experimental Study, International Journal of Refrigeration, 44 (2014), pp. 73-80
  19. Srinivas, T., Vinod, A. V., Heat Transfer Intensification in a Shell and Helical Coil Heat Exchanger using Water-Based Nanofluids, Chemical Engineering and Processing: Process Intensification, 102 (2016), pp. 1-8
  20. Sözen, A., et al., Improving the Thermal Performance of Parallel and Cross-Flow Concentric Tube Heat Exchangers Using Fly-Ash Nanofluid, Heat Transfer Engineering, 37(2016), 9, pp. 805-813
  21. Sözen, A., et al., Heat Transfer Enhancement using Alumina and Fly Ash Nanofluids in Parallel and Cross-Flow Concentric Tube Heat Exchangers, Journal of the Energy Institute, 89 (2016), 3, pp. 414-424
  22. Ilhan, B., et al., Experimental Investigation of Heat Transfer Enhancement and Viscosity Change of Hbn Nanofluids, Experimental Thermal and Fluid Science, 77 (2016), pp. 272-283
  23. Kline, S. J., McClintock, F. A., (1953), Describing Uncertainties in Single-Sample Experiments, Mechanical Engineering, pp. 3-8.
  24. Çengel, Y. A., Introduction to Thermodynamics and Heat Transfer (Second edition), McGraw-Hill Companies, United States of America, 2008, pp. 713-753

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence