Studies on boiling show that this phenomenon is strongly influenced by geometry and chemistry of surface. One of the methods to control boiling and achieve optimum conditions for increasing the heat transfer coefficient (HTC) is to change the chemistry and structure of the surface by using coating. In this research, one of the techniques of electrochemical coating, that is called anodising, is used for coating aluminium oxide layer on the surface of aluminium samples. With pool-boiling test on anodised samples using deionised water and measuring HTC and critical heat flux (CHF), it can be concluded that porous anodic alumina coating can increase HTC and CHF of nucleate pool boiling, due to change wettability and geometrical structure of surface.
KandlikarSG.Handbook of phase change: boiling and condensation. Ann Arbor, MI
: Taylor & Francis; 1999.
2.
AhnHS, KimMH.A review on critical heat flux enhancement with nanofluids and surface modification. J Heat Trans. 2012;134:024001. doi: 10.1115/1.4005065
3.
JakobM, FritzW.Versuche über den Verdampfungsvorgang. Forsch Ingenieurwes. 1931;2:435–447. doi: 10.1007/BF02578808
4.
GaertnerR.Effect of heater surface chemistry on the level of burnout heat flux in pool boiling. Technical Information Series; 1963.
5.
LiawS-P, DhirV.Effect of surface wettability on transition boiling heat transfer from a vertical surface. Proceedings of the 8th international heat transfer conference; 1986, 2031–2036.
6.
LiterSG, KavianyM.Pool-boiling CHF enhancement by modulated porous-layer coating: theory and experiment. Int J Heat Mass Trans. 2001;44:4287–4311. doi: 10.1016/S0017-9310(01)00084-9
7.
AhnHS, SinhaN, ZhangM, . Pool boiling experiments on multiwalled carbon nanotube (MWCNT) forests. J Heat Trans. 2006;128:1335–1342. doi: 10.1115/1.2349511
VemuriS, KimKJ.Pool boiling of saturated FC-72 on nano-porous surface. Int Commun Heat Mass Trans. 2005;32:27–31, 1. doi: 10.1016/j.icheatmasstransfer.2004.03.020
10.
HendricksTJ, KrishnanS, ChoiC, . Enhancement of pool-boiling heat transfer using nanostructured surfaces on aluminum and copper. Int J Heat Mass Trans. 2010;53:3357–3365. doi: 10.1016/j.ijheatmasstransfer.2010.02.025
11.
LeeCY, BhuiyaMMH, KimKJ.Pool boiling heat transfer with nano-porous surface. Int J Heat Mass Trans. 2010;53:4274–4279. doi: 10.1016/j.ijheatmasstransfer.2010.05.054
12.
ZhangBJ, KimKJ, YoonH.Enhanced heat transfer performance of alumina sponge-like nano-porous structures through surface wettability control in nucleate pool boiling. Int J Heat Mass Trans. 2012;55:7487–7498. doi: 10.1016/j.ijheatmasstransfer.2012.07.053
13.
SaeidiD, AlemrajabiAA.Experimental investigation of pool boiling heat transfer and critical heat flux of nanostructured surfaces. Int J Heat Mass Trans. 2013;60:440–449. doi: 10.1016/j.ijheatmasstransfer.2013.01.016
14.
KimDE, YuDI, JerngDW, . Review of boiling heat transfer enhancement on micro/nanostructured surfaces. Exp Therm Fluid Sci. 2015;66:173–196. doi: 10.1016/j.expthermflusci.2015.03.023
15.
LeeW, ParkS-J.Porous anodic aluminum oxide: anodization and templated synthesis of functional nanostructures. Chem Rev. 2014;114:7487–7556. doi: 10.1021/cr500002z
16.
AlkireRC, GogotsiY, SimonP, . Nanostructured materials in electrochemistry. Weinheim: John Wiley & Sons; 2008.
17.
O'sullivanJ, WoodG.The morphology and mechanism of formation of porous anodic films on aluminium. Proceedings of the Royal Society of London A: mathematical, physical and engineering sciences; 1970, 511–543.
18.
JaniAMM, LosicD, VoelckerNH.Nanoporous anodic aluminium oxide: advances in surface engineering and emerging applications. Prog Mater Sci. 2013;58:636–704. doi: 10.1016/j.pmatsci.2013.01.002
LiAP, MüllerF, BirnerA, . Fabrication and microstructuring of hexagonally ordered two-dimensional nanopore arrays in anodic alumina. Adv Mater. 1999;11:483–487. doi: 10.1002/(SICI)1521-4095(199904)11:6<483::AID-ADMA483>3.0.CO;2-I
21.
MasudaH, YamadaH, SatohM, . Highly ordered nanochannel-array architecture in anodic alumina. Appl Phys Lett. 1997;71:2770–2772. doi: 10.1063/1.120128
22.
HwangSK, JeongSH, HwangHY, . Fabrication of highly ordered pore array in anodic aluminum oxide. Korean J Chem Eng. 2002;19:467–473. doi: 10.1007/BF02697158
23.
ZhaoX, WeiG, MengX, . High performance alumina films prepared by direct current plus pulse anodisation. Surf Eng. 2014;30:455–459. doi: 10.1179/1743294414Y.0000000258
24.
KlineSJ, McClintockF.Describing uncertainties in single-sample experiments. Mech Eng. 1953;75:3–8.
25.
KubiakK, WilsonM, MathiaT, . Wettability versus roughness of engineering surfaces. Wear. 2011;271:523–528. doi: 10.1016/j.wear.2010.03.029
NorekM, KrasińskiA.Controlling of water wettability by structural and chemical modification of porous anodic alumina (PAA): towards super-hydrophobic surfaces. Surf Coat Technol. 2015;276:464–470. doi: 10.1016/j.surfcoat.2015.06.028
28.
WashburnEW.The dynamics of capillary flow. Phys Rev. 1921;17:273–283. doi: 10.1103/PhysRev.17.273
29.
TangY, TangB, QingJ, . Nanoporous metallic surface: facile fabrication and enhancement of boiling heat transfer. Appl Surf Sci. 2012;258:8747–8751. doi: 10.1016/j.apsusc.2012.05.085
30.
ZaraskaL, SulkaGD, JaskułaM.Anodic alumina membranes with defined pore diameters and thicknesses obtained by adjusting the anodizing duration and pore opening/widening time. J Solid State Electrochem. 2011;15:2427–2436. doi: 10.1007/s10008-011-1471-z
31.
BelwalkarA, GrasingE, Van GeertruydenW, . Effect of processing parameters on pore structure and thickness of anodic aluminum oxide (AAO) tubular membranes. J Membr Sci. 2008;319:192–198. doi: 10.1016/j.memsci.2008.03.044
32.
ChristoulakiA, DellisS, SpiliopoulosN, . Controlling the thickness of electrochemically produced porous alumina membranes: the role of the current density during the anodization. J Appl Electrochem. 2014;44:701–707. doi: 10.1007/s10800-014-0680-4
