Abstract
This Article presents a three dimensional numerical model investigating thermal performance and hydrodynamics features of the confined slot jet impingement using slurry of Nano Encapsulated Phase Change Material (NEPCM) as a coolant. The slurry is composed of water as a base fluid and n-octadecane NEPCM particles with mean diameter of 100nm suspended in it. A single phase fluid approach is employed to model the NEPCM slurry.The thermo physical properties of the NEPCM slurry are computed using modern approaches being proposed recently and governing equations are solved with a commercial Finite Volume based code. The effects of jet Reynolds number varying from 100 to 600 and particle volume fraction ranging from 0% to 28% are considered. The computed results are validated by comparing Nusselt number values at stagnation point with the previously published results with water as working fluid. It was found that adding NEPCM to the base fluid results with considerable amount of heat transfer enhancement.The highest values of heat transfer coefficients are observed at H/W=4 and Cm=0.28. However, due to the higher viscosity of slurry compared with the base fluid, the slurry can produce drastic increase in pressure drop of the system that increases with NEPCM particle loading and jet Reynolds number.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Di Lorenzo, G., Manca, O., Nardini, S., and Ricci, D., “Laminar confined impinging slot jets with nanofluids on heated surfaces,” Proc. Thermal Investigations of ICs and Systems (THERMINIC), 2011 17th International Workshop, Paris, France, pp. 1–6.
Basaran, A., and Selimefendigil, F., 2013, “Numerical study of heat transfer due to twinjets impingement onto an isothermal moving plate,” Mathematical and Computational Applications, 18(3), pp. 340–350.
Manca, O., Mesolella, P., Nardini, S., and Ricci, D., 2011, “Numerical study of a confined slot impinging jet with nanofluids,” Nanoscale Research Letters, 6.
Lee, H. G., Yoon, H. S., and Ha, M. Y., 2008, “A numerical investigation on the fluid flow and heat transfer in the confined impinging slot jet in the low Reynolds number region for different channel heights,” International Journal of Heat and Mass Transfer, 51(15–16), pp. 4055–4068.
Behnia, M., Parneix, S., Shabany, Y., and Durbin, P. A., 1999, “Numerical study of turbulent heat transfer in confined and unconfined impinging jets,” International Journal of Heat and Fluid Flow, 20(1), pp. 1–9.
Huang, J.-B., 2013, “Numerical Study of a Confined Axisymmetric Jet Impingement Heat Transfer with Nanofluids,” Engineering, 05(01), pp. 69–74.
Gao, N., and Ewing, D., 2006, “Investigation of the effect of confinement on the heat transfer to round impinging jets exiting a long pipe,” International Journal of Heat and Fluid Flow, 27(1), pp. 33–41.
Choo, K. S., and Kim, S. J., 2010, “Comparison of thermal characteristics of confined and unconfined impinging jets,” International Journal of Heat and Mass Transfer, 53(15–16), pp. 3366–3371.
Lin, Z. H., Chou, Y. J., and Hung, Y. H., 1997, “Heat transfer behaviors of a confined slot jet impingement,” International Journal of Heat and Mass Transfer, 40(5), pp. 1095–1107.
Park, T. H., Choi, H. G., Yoo, J. Y., and Kim, S. J., 2003, “Streamline upwind numerical simulation of two-dimensional confined impinging slot jets,” International Journal of Heat and Mass Transfer, 46(2), pp. 251–262.
Baydar, E., 1999, “Confined impinging air jet at low Reynolds numbers,” Experimental Thermal and Fluid Science, 19(1), pp. 27–33.
Di Lorenzo, G., Manca, O., Nardini, S., and Ricci, D., 2012, “Numerical Study of Laminar Confined Impinging Slot Jets with Nanofluids,” Advances in Mechanical Engineering.
Wu, W., Chow, L. C., Wang, C. M., Su, M., and Kizito, J. P., 2014, “Jet impingement heat transfer using a Field’s alloy nanoparticle–HFE7100 slurry,” International Journal of Heat and Mass Transfer, 68, pp. 357–365.
Wang, S., and Zhang, Y., 2008, “Forced-Convection Heat Transfer of Microencapsulated Phase-Change Material Suspensions Flow in a Circular Tube Subject to External Convective Heating,” Journal of Enhanced Heat Transfer, 15(2), pp. 171–181
Liu, C., Rao, Z., Zhao, J., Huo, Y., and Li, Y., 2015, “Review on nanoencapsulated phase change materials: Preparation, characterization and heat transfer enhancement,” Nano Energy, 13, pp. 814–826.
Sabbah, R., Seyed-Yagoobi, J., and Al-Hallaj, S., 2011, “Heat Transfer Characteristics of Liquid Flow With Micro- Encapsulated Phase Change Material: Numerical Study,” Journal of heat transfer, 133(12), pp. 121702-121702.
Lu, H., Seyf, H. R., Zhang, Y., and Ma, H. B., 2015, “Heat Transfer Enhancement of Backward-Facing Step Flow by Using Nano-Encapsulated Phase Change Material Slurry,” Numerical Heat Transfer, Part A: Applications, 67(4), pp. 381–400.
Rajabifar, B., 2015, “Enhancement of the performance of a double layered microchannel heatsink using PCM slurry and nanofluid coolants,” International Journal of Heat and Mass Transfer, 88, pp. 627–635.
Seyf, H. R., Zhou, Z., Ma, H. B., and Zhang, Y., 2013, “Three-dimensional numerical study of heat-transfer enhancement by nano-encapsulated phase change material slurry in microtube heat sinks with tangential impingement,” International Journal of Heat and Mass Transfer, 56(1-2), pp. 561–573.
Wu, W., Bostanci, H., Chow, L. C., Ding, S. J., Hong, Y., Su, M., Kizito, J. P., Gschwender, L., and Snyder, C. E., 2011, “Jet impingement and spray cooling using slurry of nanoencapsulated phase change materials,” International Journal of Heat and Mass Transfer, 54(13–14), pp. 2715–2723.
Zhang, Y., and Faghri, A., 1995, “Analysis of forced convection heat transfer in microencapsulated phase change material suspensions,” Journal of Thermophysics and Heat Transfer, 9(4), pp. 727–732.
Kuravi, S., Kota, K. M., Du, J., and Chow, L. C., 2009, “Numerical Investigation of Flow and Heat Transfer Performance of Nano-Encapsulated Phase Change Material Slurry in Microchannels,” Journal of heat transfer, 131(6), p. 062901.
Vand, V., 1948, “Viscosity of Solutions and Suspensions. I. Theory,” The Journal of Physical and Colloid Chemistry, 52(2), pp. 277–299.
Sabbah, R., Seyed-Yagoobi, J., and Al-Hallaj, S., 2012, “Natural Convection With Micro-Encapsulated Phase Change Material,” Journal of heat transfer, 134(8), pp. 082503-082503.
Alisetti, E. L., and Roy, S. K., 2000, “Forced Convection Heat Transfer to Phase Change Material Slurries in Circular Ducts,” Journal of Thermophysics and Heat Transfer, 14(1), pp. 115–118.
Fluent 14.5: User’s Guide, Fluent Inc., 2012.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Mohib Ur Rehman, M., Qu, Z.G. & Fu, R.P. Three-dimensional numerical study of laminar confined slot jet impingement cooling using slurry of nano-encapsulated phase change material. J. Therm. Sci. 25, 431–439 (2016). https://doi.org/10.1007/s11630-016-0881-8
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11630-016-0881-8