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Development of Highly Functional, Surface Tunable, and Efficient Composite Coatings for Pool Boiling Heat Transfer Enhancement.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Development of Highly Functional, Surface Tunable, and Efficient Composite Coatings for Pool Boiling Heat Transfer Enhancement./
Author:	Rishi, Aniket Mohan.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2021,
Description:	193 p.
Notes:	Source: Dissertations Abstracts International, Volume: 83-03, Section: B.
Contained By:	Dissertations Abstracts International83-03B.
Subject:	Mechanical engineering. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28651911
ISBN:	9798535534848

Development of Highly Functional, Surface Tunable, and Efficient Composite Coatings for Pool Boiling Heat Transfer Enhancement.
Rishi, Aniket Mohan.

Development of Highly Functional, Surface Tunable, and Efficient Composite Coatings for Pool Boiling Heat Transfer Enhancement. - Ann Arbor : ProQuest Dissertations & Theses, 2021 - 193 p.

Source: Dissertations Abstracts International, Volume: 83-03, Section: B.

Thesis (Ph.D.)--Rochester Institute of Technology, 2021.

This item must not be sold to any third party vendors.

Rapid growth and advancements in high-power electronic devices, IC chips, electric vehicles, and lithium-ion batteries have compelled the development of efficient and novel thermal management solutions. Currently used air and liquid cooling systems are unable to remove the heat efficiently due to significant pressure drops, temperature differences, and limited heat-carrying capacities. In contrast, phase-change cooling techniques can remove the larger amount of heat with higher efficiency while maintaining safer operational temperature ranges. Pool boiling heat transfer is a type of phase-change cooling technique in which vapor bubbles generated on the boiling surface carry away the heat. This pool boiling performance is limited by the maximum heat dissipation capacity, quantified by the Critical Heat Flux (CHF), and efficiency of the boiling surface, quantified by the Heat Transfer Coefficient (HTC). This work emphasizes on improving both CHF and HTC by developing highly surface functional and tunable microporous coatings using sintering and electrodeposition techniques. Initially, graphene nanoplatelets/copper (GNP/Cu)-based composite coatings were developed using a multi-step electrodeposition technique. And 2% GNP/Cu coating rendered the highest reported CHF of 286 W/cm² and HTC of 204 kW/m²-°C with increased bond strength. To further enhance the cohesive and adhesive bond strength of the electrodeposited coatings, a novel multi-step electrodeposition technique was developed and tested on copper-based coatings. This technique dramatically improved the overall functionality, pool boiling performance, and durability of the coatings. Later, a sintering technique was used to develop the coatings using GNP and copper particles. Uniform spreading of GNP over the coatings was obtained via ball milling technique. This technique yielded a CHF of 239 W/cm² and the HTC of 285 kW/m²-°C (~91% and ~438% higher than a plain copper surface, respectively). A novel approach of salt-templated sintering was developed in the final part to attain a better control on porosity and wicking properties of the sintered coatings. This generated interconnected porous networks with a higher nucleating activity, and attained record-breaking CHF of 289 W/cm² and the HTC of 1,314 kW/m²-°C.

ISBN: 9798535534848Subjects--Topical Terms:

649730
Mechanical engineering.
Subjects--Index Terms:

Composite coatings

Development of Highly Functional, Surface Tunable, and Efficient Composite Coatings for Pool Boiling Heat Transfer Enhancement.
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245 1 0 $a Development of Highly Functional, Surface Tunable, and Efficient Composite Coatings for Pool Boiling Heat Transfer Enhancement.
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300 $a 193 p.
500 $a Source: Dissertations Abstracts International, Volume: 83-03, Section: B.
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506 $a This item must not be sold to any third party vendors.
520 $a Rapid growth and advancements in high-power electronic devices, IC chips, electric vehicles, and lithium-ion batteries have compelled the development of efficient and novel thermal management solutions. Currently used air and liquid cooling systems are unable to remove the heat efficiently due to significant pressure drops, temperature differences, and limited heat-carrying capacities. In contrast, phase-change cooling techniques can remove the larger amount of heat with higher efficiency while maintaining safer operational temperature ranges. Pool boiling heat transfer is a type of phase-change cooling technique in which vapor bubbles generated on the boiling surface carry away the heat. This pool boiling performance is limited by the maximum heat dissipation capacity, quantified by the Critical Heat Flux (CHF), and efficiency of the boiling surface, quantified by the Heat Transfer Coefficient (HTC). This work emphasizes on improving both CHF and HTC by developing highly surface functional and tunable microporous coatings using sintering and electrodeposition techniques. Initially, graphene nanoplatelets/copper (GNP/Cu)-based composite coatings were developed using a multi-step electrodeposition technique. And 2% GNP/Cu coating rendered the highest reported CHF of 286 W/cm² and HTC of 204 kW/m²-°C with increased bond strength. To further enhance the cohesive and adhesive bond strength of the electrodeposited coatings, a novel multi-step electrodeposition technique was developed and tested on copper-based coatings. This technique dramatically improved the overall functionality, pool boiling performance, and durability of the coatings. Later, a sintering technique was used to develop the coatings using GNP and copper particles. Uniform spreading of GNP over the coatings was obtained via ball milling technique. This technique yielded a CHF of 239 W/cm² and the HTC of 285 kW/m²-°C (~91% and ~438% higher than a plain copper surface, respectively). A novel approach of salt-templated sintering was developed in the final part to attain a better control on porosity and wicking properties of the sintered coatings. This generated interconnected porous networks with a higher nucleating activity, and attained record-breaking CHF of 289 W/cm² and the HTC of 1,314 kW/m²-°C.
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650 4 $a Mechanical engineering. $3 649730
650 4 $a Thermodynamics. $3 517304
650 4 $a Energy. $3 876794
650 4 $a Silicon. $3 669429
650 4 $a Bubbles. $3 1530439
650 4 $a Graphene. $3 1569149
650 4 $a Contact angle. $3 3320098
650 4 $a Sintering. $3 814676
650 4 $a Radiation. $3 673904
650 4 $a Heat transfer. $3 3391367
650 4 $a Propagation. $3 3680519
650 4 $a Viscosity. $3 1050706
650 4 $a Spectrum analysis. $3 520440
650 4 $a Fourier transforms. $3 3545926
650 4 $a Lasers. $3 535503
650 4 $a Carbon. $3 604057
650 4 $a Temperature. $3 711968
650 4 $a Electron microscopes. $3 2055445
650 4 $a Desalination. $3 3681473
650 4 $a Particle size. $3 3564817
650 4 $a Morphology. $3 591167
650 4 $a Atoms & subatomic particles. $3 3560412
653 $a Composite coatings
653 $a Functional surfaces
653 $a Graphene nanoplatelets based coatings
653 $a Graphene-copper coatings
653 $a Heat transfer coefficient
653 $a Pool boiling
690 $a 0548
690 $a 0348
690 $a 0791
690 $a 0287
710 2 $a Rochester Institute of Technology. $b Microsystems Engineering. $3 1023613
773 0 $t Dissertations Abstracts International $g 83-03B.
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791 $a Ph.D.
792 $a 2021
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28651911