Role of copper oxide layer on pool boiling performance with femtosecond laser processed surfaces

Corey Kruse, Edwin Peng, Craig Zuhlke, Jeff Shield, Dennis Alexander, Sidy Ndao, George Gogos

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Copper pool boiling surfaces are tested for pool boiling enhancement due to femtosecond laser surface processing (FLSP). FLSP creates self-organized micro/nanostructures on metallic surfaces and creates highly wetting and wicking surfaces with permanent surface features. In this study two series of samples were created. The first series consists of three flat FLSP copper surfaces with varying microstructures and the second series is an open microchannel configuration with laser processing over the horizontal surfaces of the microchannels. These microchannels range in height from 125 microns to 380 microns. Each of these surfaces were tested for pool boiling performance. It was found that all the processed surfaces except one resulted in a decrease in critical heat flux and heat transfer coefficient compared to an unprocessed surface. It was found that the laser fluence parameter had a significant role in whether there was an increase in CHF or HTC. A cross sectioning technique was employed to study the different layers of the microstructure and to understand how FLSP could have a negative effect on the CHF and HTC. It was found that a thick oxide layer forms during the FLSP process of copper in an open-air atmosphere. The thickness and uniformity of the oxide layer is highly dependent on the laser fluence. A low fluence sample results in an inconsistent oxide layer of nonuniform thickness and subsequently an increase in CHF and HTC. A high laser fluence sample results in a uniformly thick oxide layer which increases the thermal resistance of the sample and allows for a premature CHF and decrease in HTC.

Original languageEnglish (US)
Title of host publicationASME 2017 15th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2017
PublisherAmerican Society of Mechanical Engineers
ISBN (Electronic)9780791858301
StatePublished - Jan 1 2017
EventASME 2017 15th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2017 - Cambridge, United States
Duration: Aug 27 2017Aug 30 2017

Publication series

NameASME 2017 15th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2017

Other

OtherASME 2017 15th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2017
CountryUnited States
CityCambridge
Period8/27/178/30/17

Fingerprint

Femtosecond Laser
Copper oxides
Ultrashort pulses
Copper
Boiling liquids
Oxides
Microchannel
Processing
Microchannels
Lasers
Laser
Series
Microstructure
Laser Processing
Thermal Resistance
Decrease
Heat Transfer Coefficient
Wetting
Nanostructures
Heat Flux

ASJC Scopus subject areas

  • Process Chemistry and Technology
  • Fluid Flow and Transfer Processes
  • Modeling and Simulation

Cite this

Kruse, C., Peng, E., Zuhlke, C., Shield, J., Alexander, D., Ndao, S., & Gogos, G. (2017). Role of copper oxide layer on pool boiling performance with femtosecond laser processed surfaces. In ASME 2017 15th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2017 (ASME 2017 15th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2017). American Society of Mechanical Engineers.

Role of copper oxide layer on pool boiling performance with femtosecond laser processed surfaces. / Kruse, Corey; Peng, Edwin; Zuhlke, Craig; Shield, Jeff; Alexander, Dennis; Ndao, Sidy; Gogos, George.

ASME 2017 15th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2017. American Society of Mechanical Engineers, 2017. (ASME 2017 15th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2017).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kruse, C, Peng, E, Zuhlke, C, Shield, J, Alexander, D, Ndao, S & Gogos, G 2017, Role of copper oxide layer on pool boiling performance with femtosecond laser processed surfaces. in ASME 2017 15th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2017. ASME 2017 15th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2017, American Society of Mechanical Engineers, ASME 2017 15th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2017, Cambridge, United States, 8/27/17.
Kruse C, Peng E, Zuhlke C, Shield J, Alexander D, Ndao S et al. Role of copper oxide layer on pool boiling performance with femtosecond laser processed surfaces. In ASME 2017 15th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2017. American Society of Mechanical Engineers. 2017. (ASME 2017 15th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2017).
Kruse, Corey ; Peng, Edwin ; Zuhlke, Craig ; Shield, Jeff ; Alexander, Dennis ; Ndao, Sidy ; Gogos, George. / Role of copper oxide layer on pool boiling performance with femtosecond laser processed surfaces. ASME 2017 15th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2017. American Society of Mechanical Engineers, 2017. (ASME 2017 15th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2017).
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