Experimental investigation of the effect of one-dimensional roughened surface on the pool boiling of nano fluids

Document Type : Research Note


Department of Mechanical Engineering, Science and Research Branch, Islamic Azad University, Tehran, P.O. Box 14515-775, Iran



The objectives of this research are to develop a special surface for increasing the nucleation heat transfer characteristics, decreasing the superheat temperature and postponing the occurrence of critical heat flux for long term work. A laboratory apparatus was built. In order to more feeding the microlayer of the bubble by capillary force of the micro-grooves, the boiling surface was roughened in one direction. Despite the fact that the boiling characteristics of roughened surface are improved relative to the polished surface, the results are not very impressive Although the boiling of two Nano-fluids, copper oxide and alumina on the micro-groove surface resulted in a significant increase in the nucleation heat transfer but this method cannot be used for a long time process because of the continues deposition of nanoparticles over the time and creation of insulation layer on the micro-groove surface. Therefore, simultaneous utilization of micro- groove surface, as well as the depositing of a thin and porous layer of nanoparticles on the surface increased the feeding of sites and the production of bubbles respectively. The critical heat flux and boiling heat transfer coefficient for the surface deposited with copper oxide nanoparticles enhanced by 46.5 % and up to 74.2% respectively.


1. Nukiyama, S. The maximum and minimum values of
the heat Q transmitted from metal to boiling water
under atmospheric pressure", Japanese Society of Mechanical
Engineering, 9(12), pp. 1419{1433 (1966).
2. Aznam, S.M., Mori, S., Sakakibara, F., and Okuyama,
K. E ects of heater orientation on critical heat
ux for
nanoparticle-deposited surface with honeycomb porous
plate attachment in saturated pool boiling of water",
International Journal of Heat and Mass Transfer, 102,
pp. 1345{1355 (2016).
3. Pournaderi, P. and Pishevar, A.R. Numerical simulation
of oblique impact of a droplet on a surface in the
lm boiling regime", Scientia Iranica, 21(1), p. 119
4. Rana, Sh., Nawaz, M., and Haider Qureshi, I. Numerical
study of hydrothermal characteristics in nano
using KKL model with Brownian motion", Scientia
Iranica, 26(3), pp. 1931{1943 (2019).
5. Kim, D.E., Yu, D.I., Jerng, D.W., Kim, M.H., and
Ahn, H.S. Review of boiling heat transfer enhancement
on micro/nanostructured surfaces", Experimental
Thermal and Fluid Science, 66, pp. 173{196 (2015).
6. Kim, J., Jun, S., Laksnarain, R., and You, S.M. E ect
of surface roughness on pool boiling heat transfer
at a heated surface having moderate wettability",
International Journal of Heat and Mass Transfer, 101,
pp. 992{1002 (2016).
7. Mohammadi. M. and Khayat, M. Experimental investigation
of the e ect of roughness orientation of surface
on motion of bubbles and critical heat
ux", Modares
Mechanical Engineering, 17, pp. 531{541 (2018).
8. Choi, S.U.S. and Eastman, J.A.A. Enhancing thermal
conductivity of
uids with nanoparticles", in ASME
International Mechanical Engineering Congress & Exposition,
San Francisco, CA (1995).
9. Vafaei, S. Nano
uid pool boiling heat transfer phenomenon",
Powder Technology, 277, pp. 181{192
10. Wen, D. and Ding, Y. Experimental investigation
into the pool boiling heat transfer of aqueous based

-alumina nano
uids", Journal of Nanoparticle Research,
7, pp. 265{274 (2005).
11. Das, S.K., Putra, N., and Roetzel, W. Pool boiling of
uids on horizontal narrow tubes", International
Journal of Multiphase Flow, 29(8), pp. 1237{1247
12. Holman, J.P., Experimental Methods for Engineers,
Hill, New York: McGraw-7th Ed. (2001).
13. Amiri, A., Shanbedi, M., Amiri, H., Zeinali Heris,
S., Kazi, S.N., Chew, B.T., and Eshghi, H. Pool
boiling heat transfer of CNT/water nano
uid", Applied
Thermal Engineering, 71(1), pp. 450{459 (2014).
14. Kim, H.D., Kim, J., and Kim, M.H. Experimental
studies on CHF characteristics of nano-
uids at pool
boiling", International Journal of Multiphase Flow,
33, pp. 691{706 (2007).
15. Chopkar, M., Das, A.K., Manna, I., and Das, P.K.
Pool boiling heat transfer characteristics of ZrO2-
water nano
uids froma
at surface in a pool", Journal
of Heat and Mass Transfer, 44, pp. 999{1004 (2008).
2966 M. Mohammadi and M. Khayat/Scientia Iranica, Transactions B: Mechanical Engineering 27 (2020) 2954{2966
16. Trisaksri, V. and Wongwises, S. Nucleate pool boiling
heat transfer of TiO2-R141b nano
uids", International
Journal of Heat and Mass Transfer, 52, pp. 1582{1588
17. Kathiravan, R., Kumar, R., Gupta, A., and Chandra,
R. Preparation and pool boiling characteristics of copper
uids over a
at plate heater", International
Journal of Heat and Mass Transfer, 53(9), pp. 1673{
1681 (2010).
18. Stutz, B., Morceli, C.H.S., Silva, M.F., Cioulachtjian,
S., and Bonjour, J. In
uence of nanoparticle surface
coating on pool boiling", Experimental Thermal Fluid
Science, 35, pp. 1239{1249 (2011).
19. Kole, M. and Dey, T.K. Investigations on the pool
boiling heat transfer and critical heat
ux of ZnOethyleneglycol
uids", Apply Thermal Engineering,
37, pp. 112{119 (2012).
20. Kamatchi, R., Venkatachalapathy, S., and Nithya, C.
Experimental investigation and mechanism of critical
ux enhancement in pool boiling heat transfer
with nano
uids", Heat and Mass Transfer, 52(11), pp.
2357{2366 (2016).
21. Sarafraz, M.M., Hormozi, F., Silakhori, M., and
Peyghambarzadeh, S.M. On the fouling formation
of functionalized and non-functionalized carbon nano
tube nano-
uids under pool boiling condition", Apply
Thermal Engineering, 95, pp. 433{444 (2016).