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Electrophoretic dep...
Electrophoretic deposition surfaces to enhance HFE-7200 pool boiling heat transfer and critical heat flux
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- Cao, Zhen (författare)
- Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Värmeöverföring,Institutionen för energivetenskaper,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Heat Transfer,Department of Energy Sciences,Departments at LTH,Faculty of Engineering, LTH
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- Wu, Zan (författare)
- Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Värmeöverföring,Institutionen för energivetenskaper,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Heat Transfer,Department of Energy Sciences,Departments at LTH,Faculty of Engineering, LTH
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- Pham, Anh Duc (författare)
- Lund University
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- Sundén, Bengt (författare)
- Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Värmeöverföring,Institutionen för energivetenskaper,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Heat Transfer,Department of Energy Sciences,Departments at LTH,Faculty of Engineering, LTH
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(creator_code:org_t)
- Elsevier BV, 2019
- 2019
- Engelska.
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Ingår i: International Journal of Thermal Sciences. - : Elsevier BV. - 1290-0729. ; 146
- Relaterad länk:
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http://dx.doi.org/10...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Modulated nanoparticle-coating surfaces were fabricated by an improved electrophoretic deposition technique in this study. Pool boiling experiments were studied for HFE-7200 on the modulated nanoparticle-coating surfaces, with a smooth surface and uniform coating surfaces as comparison. It was found that the present modulated coating surfaces can enhance the heat transfer coefficient and the critical heat flux by 60% and 20%–40%, respectively, in comparison to the smooth surface, while the uniform coating surface can improve heat transfer coefficients by maximum 100%, but cannot enhance critical heat fluxes. Heat transfer on the modulated nanoparticle-coating surfaces was theoretically analyzed by a mechanistic model which considered free convection, transient conduction and microlayer evaporation. The heat transfer can be predicted by the model, especially at low-to-moderate heat fluxes. Additionally, referring to the bubble visualization at critical heat fluxes, possible mechanisms to trigger critical heat fluxes were discussed. Afterwards, a critical heat flux model originating from the Zuber hydrodynamic instability model, was employed to predict the experimental results, showing a good prediction ability.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Energiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Energy Engineering (hsv//eng)
Nyckelord
- Bubble dynamics
- Critical heat flux
- Nanoparticle
- Pool boiling
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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