Critical height of micro/nano structures for pool boiling heat transfer enhancement

An Zou; Shalabh C. Maroo

doi:10.1063/1.4833543

Critical height of micro/nano structures for pool boiling heat transfer enhancement

An Zou, Shalabh C. Maroo

Department of Mechanical & Aerospace Engineering

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

124 Scopus citations

Abstract

Critical heat flux (CHF) enhancement by surface modifications has been an extensively researched area in pool boiling heat transfer. Here we report a fundamental mechanism of CHF enhancement where nano/micro ridges are fabricated on surfaces to fragment and evaporate the metastable non-evaporating/adsorbed film present at the base of a bubble in the contact line region. CHF increase of ∼125% is obtained with only ∼40% increase in surface area. An analytical model is extended to explain the CHF enhancement and to determine the average non-evaporating film thickness, which serves as the critical height for nano/micro structures for pool boiling heat transfer enhancement.

Original language	English (US)
Article number	221602
Journal	Applied Physics Letters
Volume	103
Issue number	22
DOIs	https://doi.org/10.1063/1.4833543
State	Published - Nov 25 2013

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/1.4833543

Cite this

@article{57f4859bfd6c4fa5b19aa54e238b11e6,

title = "Critical height of micro/nano structures for pool boiling heat transfer enhancement",

abstract = "Critical heat flux (CHF) enhancement by surface modifications has been an extensively researched area in pool boiling heat transfer. Here we report a fundamental mechanism of CHF enhancement where nano/micro ridges are fabricated on surfaces to fragment and evaporate the metastable non-evaporating/adsorbed film present at the base of a bubble in the contact line region. CHF increase of ∼125% is obtained with only ∼40% increase in surface area. An analytical model is extended to explain the CHF enhancement and to determine the average non-evaporating film thickness, which serves as the critical height for nano/micro structures for pool boiling heat transfer enhancement.",

author = "An Zou and Maroo, {Shalabh C.}",

note = "Funding Information: The authors would like to acknowledge the partial support from DOE/EERE/Office of Advanced Manufacturing Program (AMO) grant (Award No. DE-EE0006031) and Syracuse Center of Excellence. This work was performed in part at the Cornell NanoScale Facility, a member of the National Nanotechnology Infrastructure Network, which was supported by the National Science Foundation (Grant ECS-0335765). The authors would also like to thank Dr. Rishi Raj, Department of Mechanical Engineering, Massachusetts Institute of Technology, for his helpful discussions on the analytical model.",

year = "2013",

month = nov,

day = "25",

doi = "10.1063/1.4833543",

language = "English (US)",

volume = "103",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics Publising LLC",

number = "22",

}

TY - JOUR

T1 - Critical height of micro/nano structures for pool boiling heat transfer enhancement

AU - Zou, An

AU - Maroo, Shalabh C.

N1 - Funding Information: The authors would like to acknowledge the partial support from DOE/EERE/Office of Advanced Manufacturing Program (AMO) grant (Award No. DE-EE0006031) and Syracuse Center of Excellence. This work was performed in part at the Cornell NanoScale Facility, a member of the National Nanotechnology Infrastructure Network, which was supported by the National Science Foundation (Grant ECS-0335765). The authors would also like to thank Dr. Rishi Raj, Department of Mechanical Engineering, Massachusetts Institute of Technology, for his helpful discussions on the analytical model.

PY - 2013/11/25

Y1 - 2013/11/25

N2 - Critical heat flux (CHF) enhancement by surface modifications has been an extensively researched area in pool boiling heat transfer. Here we report a fundamental mechanism of CHF enhancement where nano/micro ridges are fabricated on surfaces to fragment and evaporate the metastable non-evaporating/adsorbed film present at the base of a bubble in the contact line region. CHF increase of ∼125% is obtained with only ∼40% increase in surface area. An analytical model is extended to explain the CHF enhancement and to determine the average non-evaporating film thickness, which serves as the critical height for nano/micro structures for pool boiling heat transfer enhancement.

AB - Critical heat flux (CHF) enhancement by surface modifications has been an extensively researched area in pool boiling heat transfer. Here we report a fundamental mechanism of CHF enhancement where nano/micro ridges are fabricated on surfaces to fragment and evaporate the metastable non-evaporating/adsorbed film present at the base of a bubble in the contact line region. CHF increase of ∼125% is obtained with only ∼40% increase in surface area. An analytical model is extended to explain the CHF enhancement and to determine the average non-evaporating film thickness, which serves as the critical height for nano/micro structures for pool boiling heat transfer enhancement.

UR - http://www.scopus.com/inward/record.url?scp=84888583345&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84888583345&partnerID=8YFLogxK

U2 - 10.1063/1.4833543

DO - 10.1063/1.4833543

M3 - Article

AN - SCOPUS:84888583345

SN - 0003-6951

VL - 103

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 22

M1 - 221602

ER -

Critical height of micro/nano structures for pool boiling heat transfer enhancement

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this