THERMAL SCIENCE

International Scientific Journal

Thermal Science - Online First

online first only

Graphene oxide-loaded shortening as an environmentally-friendly heat transfer fluid with high thermal conductivity

ABSTRACT
Graphene oxide-loaded shortening (GOS), an environmentally-friendly heat transfer fluid with high thermal conductivity, was successfully prepared by mixing graphene oxide (GO) with a shortening. Scanning electron microscopy revealed that GO particles, prepared by the modified Hummer's method, dispersed well in the shortening. In addition, the latent heat of GOS decreased while their viscosity and thermal conductivity increased with increasing the amount of loaded GO. The thermal conductivity of the GOS with 4% GO was higher than that of pure shortening of ca. 3 times (from 0.1751 to 0.6022 [Wm-1K-1]) and increased with increasing temperature. The GOS started to be degraded at ca. 360°C. After being heated and cooled at 100°C for 100 cycles, its viscosity slightly decreased and no chemical degradation was observed. Therefore, the prepared GOS is potentially used as environmentally friendly heat transfer fluid at high temperature.
KEYWORDS
PAPER SUBMITTED: 2015-03-12
PAPER REVISED: 2015-11-18
PAPER ACCEPTED: 2015-11-18
PUBLISHED ONLINE: 2015-12-19
DOI REFERENCE: https://doi.org/10.2298/TSCI150312199V
REFERENCES
  1. Harris, A., et al., Measuring the thermal conductivity of heat transfer fluids via the modified 264 transient plane source (MTPS), J. Therm. Anal. Calorim., 116 (2014), 3, pp. 1309-1314
  2. Liu, J., et al., Thermodynamic properties and thermal stability of ionic liquid-based nanofluids 266 containing graphene as advanced heat transfer fluids for medium-to-high-temperature applications, 267 Renew. Energ., 63 (2014), pp. 519-523
  3. Chen, Z., et al., Synthesis and thermal properties of shape-stabilized lauric acid/activated carbon 269 composites as phase change materials for thermal energy storage, Sol. Energ. Mat. Sol. C., 102 270 (2012), pp. 131-136
  4. Elgafy, A., Lafdi, K., Effect of carbon nanofiber additives on thermal behavior of phase change 272 materials, Carbon, 43 (2005), pp. 3067-3074
  5. Wang, J., et al., Increasing the thermal conductivity of palmitic acid by the addition of carbon 274 nanotubes, Carbon, 48 (2010), pp. 3979-3986
  6. Wang, J., et al., Enhancing thermal conductivity of palmitic acid based phase change materials 276 with carbon nanotubes as fillers, Sol. Energ., 84 (2010), pp. 339-344
  7. Karaipekli, A., Sari, A., Capric-myristic acid/expanded perlite composite as form-stable phase 278 change material for latent heat thermal energy storage, Renew. Energ., 33 (2008), 12, pp. 2599-2605
  8. Sari, A., Karaipekli, A., Preparation, thermal properties and thermal reliability of palmitic 280 acid/expanded graphite composite as form-stable PCM for thermal energy storage, Sol. Energ. Mat. 281 Sol. C., 93 (2009), pp. 571-576
  9. Li, M., A nano-graphite/paraffin phase change material with high thermal conductivity, Appl. 283 Energ., 106 (2013), pp. 25-30
  10. Moghadam, A., et al., Effects of CuO/water nanofluid on the efficiency of a flat-plate solar 285 collector, Exp. Therm. Fluid Sci., 58 (2014), pp. 9-14
  11. Ho, C., et al., Thermal performance of Al2O3/water nanofluid in a natural circulation loop with a 287 mini-channel heat sink and heat source, Energ. Convers. Manage., 87 (2014), pp. 848-858
  12. Khaleduzzaman, S., et al., Energy and exergy analysis of alumina-water nanofluid for an 289 electronic liquid cooling system, Int. Commun. Heat Mass, 57 (2014), pp. 118-127
  13. Ho, C., Lin, Y., Turbulent forced convection effectiveness of alumina-water nanofluid in a 291 circular tube with elevated inlet fluid temperatures: an experimental study, Int. Commun. Heat Mass, 292 57 (2014), pp. 247-253
  14. Karami, N., Rahimi, M., Heat transfer enhancement in a PV cell using Boehmite nanofluid, 294 Energ. Convers. Manage., 86 (2014), pp. 275-285
  15. Akhavan-Behabadi, M., et al., An empirical study on heat transfer and pressure drop properties 296 of heat transfer oil-copper oxide nanofluid in microfin tubes, Int. Commun. Heat Mass, 57 (2014), pp. 297 150-156
  16. Rimbault, B., et al., Experimental investigation of CuO-water nanofluid flow and heat transfer 299 inside a microchannel heat sink, Int. J. Therm. Sci., 84 (2014), pp. 275-292
  17. Maddah, H., et al., Experimental study of Al2O3/water nanofluid turbulent heat transfer 301 enhancement in the horizontal double pipes fitted with modified twisted tapes, Int. J. Heat Mass 302 Tran., 78 (2014), pp. 1042-1054
  18. Naik, M., et al., Comparative study on thermal performance of twisted tape and wire coil inserts 304 in turbulent flow using CuO/water nanofluid, Exp. Therm. Fluid Sci., 57 (2014), pp. 65-76
  19. Yu, Z., et al., Increased thermal conductivity of liquid paraffin-based suspensions in the presence 306 of carbon nano-additives of various sizes and shapes, Carbon, 53 (2013), pp. 277-285
  20. Mehrali, M., et al., Shape-stabilized phase change materials with high thermal conductivity based 308 on paraffin/graphene oxide composite, Energ. Convers. Manage., 67 (2013), pp. 275-282
  21. Park, S., Ruoff, R., Chemical methods for the production of graphenes, Nat. Nanotechnol., 4 310 (2009), pp. 217-224
  22. Marcano, D., et al., Improved synthesis of graphene oxide, ACS Nano, 4 (2010), 8, pp. 4806-312 4814
  23. Håkansson, B., Ross, R., Effective thermal conductivity of binary dispersed composites over 314 wide ranges of volume fraction, temperature, and pressure, J. Appl. Phys., 68 (1990), 2533, pp. 3285
  24. Moroe, S., et al., Thermal conductivity measurement of gases by the transient short-hot-wire 316 method, Exp. Heat Transfer, 24 (2011), pp. 168-178
  25. Healy, J., et al., The theory of the transient hot-wire method for measuring thermal conductivity, 318 Physica B & C, 82 (1976), 2, pp. 392-408
  26. Alvarado, S., et al., A hot-wire method based thermal conductivity measurement apparatus for 320 teaching purposes, Eur. J. Phys., 33 (2012), 4, pp. 897-906 321
  27. Sun, G., et al., Preparation and characterization of graphite nanosheets from detonation 322 technique, Mater. Lett., 62 (2008), pp. 703-706 323
  28. Dmitriy, A., et al., Preparation and characterization of graphene oxide paper, Nature, 448 (2007), 324 pp. 457-460 325
  29. Park, S., et al., Colloidal suspensions of highly reduced graphene oxide in a wide variety of 326 organic solvents, Nano Lett., 9 (2009), 4, pp. 1593-1597 327
  30. Nair, R., et al., Unimpeded permeation of water through helium-leak-tight graphene-based 328 membranes, Science, 335 (2012), 6067, pp. 442-444
  31. McMurry, J., Organic Chemistry, Brooks/Cole, China, 2012 330
  32. Mehrali, M., et al., Preparation and properties of highly conductive palmitic acid/graphene oxide 331 composites as thermal energy storage materials, Energy, 58 (2013), pp. 628-634 332
  33. Park, W., et al., Electrical and thermal conductivities of reduced graphene oxide/polystyrene 333 composites, Appl. Phys. Lett., 104 (2014), pp. 113101
  34. Thomas, D., Transport characteristics of suspension: VIII. a note on the viscosity of Newtonian 335 suspensions of uniform spherical particles, J. Colloid Sci., 20 (1965), 3, pp. 267-277
  35. Fahlman, B., Materials Chemistry, Springer, Netherlands, 2011