Critical heat flux of pool boiling on Si nanowire array-coated surfaces

Ming Chang Lu; Renkun Chen; Vinod Srinivasan; Van P. Carey; Arun Majumdar

doi:10.1016/j.ijheatmasstransfer.2011.08.007

Critical heat flux of pool boiling on Si nanowire array-coated surfaces

Ming Chang Lu, Renkun Chen, Vinod Srinivasan, Van P. Carey, Arun Majumdar

Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

180 Scopus citations

Abstract

Pool boiling of saturated water on plain Si surfaces and surfaces covered with a dense array of Si nanowires (SiNWs) has been studied. Measured CHF and heat transfer coefficient (HTC) values of about 223 ± 5.61 W/cm ² and 9 ± 1.60 W/cm ² K, respectively, on the nanowire array-coated surface are among the highest reported in boiling heat transfer. Meanwhile, the CHFs on both nanowire-coated and Plain Si surfaces show a similar heater size dependence - the CHF increases as heater size decreases. The measured CHFs on both types of surfaces are approximately following the prediction of the hydrodynamic theory assuming the Helmholtz wavelength equal to the corresponded heater length. It suggests that the CHFs on both types of surfaces might be limited by pool hydrodynamics.

Original language	English (US)
Pages (from-to)	5359-5367
Number of pages	9
Journal	International Journal of Heat and Mass Transfer
Volume	54
Issue number	25-26
DOIs	https://doi.org/10.1016/j.ijheatmasstransfer.2011.08.007
State	Published - Dec 2011

Bibliographical note

Funding Information:
This work was supported by Intel Corporation and the UC Discovery program . We thank the UC Berkeley Micro-fabrication Laboratory for the use of their facilities. The authors thank Dr. R.S. Prasher of Advanced Research Projects Agency-Energy and Dr. J.-Y. Chang of Intel for helpful discussions on boiling heat transfer.

Keywords

Critical heat flux
Hydrodynamics
Nanowires
Pool boiling

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title = "Critical heat flux of pool boiling on Si nanowire array-coated surfaces",

abstract = "Pool boiling of saturated water on plain Si surfaces and surfaces covered with a dense array of Si nanowires (SiNWs) has been studied. Measured CHF and heat transfer coefficient (HTC) values of about 223 ± 5.61 W/cm 2 and 9 ± 1.60 W/cm 2 K, respectively, on the nanowire array-coated surface are among the highest reported in boiling heat transfer. Meanwhile, the CHFs on both nanowire-coated and Plain Si surfaces show a similar heater size dependence - the CHF increases as heater size decreases. The measured CHFs on both types of surfaces are approximately following the prediction of the hydrodynamic theory assuming the Helmholtz wavelength equal to the corresponded heater length. It suggests that the CHFs on both types of surfaces might be limited by pool hydrodynamics.",

keywords = "Critical heat flux, Hydrodynamics, Nanowires, Pool boiling",

author = "Lu, {Ming Chang} and Renkun Chen and Vinod Srinivasan and Carey, {Van P.} and Arun Majumdar",

note = "Funding Information: This work was supported by Intel Corporation and the UC Discovery program . We thank the UC Berkeley Micro-fabrication Laboratory for the use of their facilities. The authors thank Dr. R.S. Prasher of Advanced Research Projects Agency-Energy and Dr. J.-Y. Chang of Intel for helpful discussions on boiling heat transfer.",

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AU - Lu, Ming Chang

AU - Chen, Renkun

AU - Srinivasan, Vinod

AU - Carey, Van P.

AU - Majumdar, Arun

N1 - Funding Information: This work was supported by Intel Corporation and the UC Discovery program . We thank the UC Berkeley Micro-fabrication Laboratory for the use of their facilities. The authors thank Dr. R.S. Prasher of Advanced Research Projects Agency-Energy and Dr. J.-Y. Chang of Intel for helpful discussions on boiling heat transfer.

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N2 - Pool boiling of saturated water on plain Si surfaces and surfaces covered with a dense array of Si nanowires (SiNWs) has been studied. Measured CHF and heat transfer coefficient (HTC) values of about 223 ± 5.61 W/cm 2 and 9 ± 1.60 W/cm 2 K, respectively, on the nanowire array-coated surface are among the highest reported in boiling heat transfer. Meanwhile, the CHFs on both nanowire-coated and Plain Si surfaces show a similar heater size dependence - the CHF increases as heater size decreases. The measured CHFs on both types of surfaces are approximately following the prediction of the hydrodynamic theory assuming the Helmholtz wavelength equal to the corresponded heater length. It suggests that the CHFs on both types of surfaces might be limited by pool hydrodynamics.

AB - Pool boiling of saturated water on plain Si surfaces and surfaces covered with a dense array of Si nanowires (SiNWs) has been studied. Measured CHF and heat transfer coefficient (HTC) values of about 223 ± 5.61 W/cm 2 and 9 ± 1.60 W/cm 2 K, respectively, on the nanowire array-coated surface are among the highest reported in boiling heat transfer. Meanwhile, the CHFs on both nanowire-coated and Plain Si surfaces show a similar heater size dependence - the CHF increases as heater size decreases. The measured CHFs on both types of surfaces are approximately following the prediction of the hydrodynamic theory assuming the Helmholtz wavelength equal to the corresponded heater length. It suggests that the CHFs on both types of surfaces might be limited by pool hydrodynamics.

KW - Critical heat flux

KW - Hydrodynamics

KW - Nanowires

KW - Pool boiling

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Critical heat flux of pool boiling on Si nanowire array-coated surfaces

Abstract

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Keywords

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