A State-of-the-Art Review of Compact Vapor Compression Refrigeration Systems and Their Applications

Barbosa, Jader R.; Ribeiro, Guilherme B.; Oliveira, Pablo A. de

doi:10.1080/01457632.2012.613275

Cited by 61 publications

(24 citation statements)

References 38 publications

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“…The challenges in the development of miniature VCR for electronics cooling were summarized in ref. [7] as follows: (i) the need for efficient, reliable and compact compressor, (ii) the moisture condensation in the heat sink region, (iii) the cost of the system, (iv) the system should be able to handle variable load and heat dissipation with fast response, (v) the issue of noise and vibration. Microchannel heat exchangers can play an important role in the development of miniature VCR systems because of their capability to provide a high degree of compactness.…”

Section: Applicationsmentioning

confidence: 99%

“…Despite these high heat fluxes, electronics cooling using flow boiling in microchannels is only limited to lab-scale and is not commercially available due to the lack of accurate design equations and the lack of understanding several fundamental issues. These issues include the following: (1) the precise definition of a microchannel and hence design equations to be used, (2) boiling incipience and bubble dynamics, (3) the dominant heat transfer mechanism(s), (4) flow instability, (5) effect of surface microstructure, (6) early dryout and low critical heat flux, (7) prediction of flow patterns, heat transfer rates and pressure drop. The current research group conducted extensive research on flow boiling in single and multi-microchannels configurations and studied the effect of several parameters, which can help understand most of the aforementioned fundamental issues.…”

Section: Introductionmentioning

confidence: 99%

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Flow Boiling in Micro-Passages: Developments in Fundamental Aspects and Applications

Karayiannis

Mahmoud

2018

International Heat Transfer Conference 16

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Flow boiling in mini to micro passages located at the heat source, and as part of a thermal management system, has been identified as a possible way to remove the increasing high heat fluxes generated by high power electronic devices due to their capability of high heat transfer rates with small surface temperature variations. However, some still unresolved fundamental issues hinder the possible full adoption of this technology. These relate to the prevailing flow patterns, heat transfer rates and pressure drop in such geometries, and their dependence on key parameters. The possible major applications of flow boiling in microchannels are first mentioned in this paper, highlighting the requirements and the challenges of the thermal management of each application. The paper then presents new experimental research by the present authors as well as research reported in the literature on flow boiling in single tubes and rectangular multi microchannels to help elucidate the following fundamental issues: the definition of a microchannel, prevailing flow patterns, heat transfer mechanisms, flow instability and reversal and their effect on heat transfer rates, effect of channel material and surface characteristics (including latest research in coatings), effect of different fluid properties, and its relation to channel material, effect of channel length and aspect ratio. An appreciation of the above can help explain the interpretation of the prevailing fluid flow and heat transfer phenomena and the data scatter and discrepancies observed in past studies. In addition, models and correlations predicting flow patterns and heat transfer rates are presented.

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Section: Applicationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Flow Boiling in Micro-Passages: Developments in Fundamental Aspects and Applications

Karayiannis

Mahmoud

2018

International Heat Transfer Conference 16

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“…For some mobile cooling applications in severely hot environment for infantry, policemen, firemen, etc., the MVCR seems to be the only effective solution for long time personal cooling because of high efficiency and compactness. Thus the MVCR is considered as one of the most promising technology for personal cooling and electronics cooling [10]. In these applications, the high flux heat dissipation is critical while the energy consumption for the cooling process should not be too much.…”

Section: Introductionmentioning

confidence: 99%

Development and experimental study of the characteristics of a prototype miniature vapor compression refrigerator

Yuan

Yang

et al. 2015

Applied Energy

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“…[ 5 ] Water condensation is also intrinsic to various technological applications like fog harvesting, [ 6–8 ] seawater desalination, [ 9 ] and heat exchangers for power generation [ 10 ] and refrigeration. [ 11,12 ] In all cases, efficient condensation and removal (or “collection”) of the condensed liquid is essential. The entire cycle of condensation consists of a series of steps, namely the nucleation of liquid on an initially dry solid surface, the subsequent growth of the liquid phase in form of droplets (or a film), and finally the removal of the condensate such that a subsequent generation of drops can nucleate.…”

Section: Introductionmentioning

confidence: 99%

Electrowetting‐Controlled Dropwise Condensation with Patterned Electrodes: Physical Principles, Modeling, and Application Perspectives

Hoek

Dey

Mugele

2020

Adv Materials Inter

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Patterning the wettability of solid surfaces is a successful strategy to control the dropwise condensation of vapor onto partially wetting solid surfaces. The condensation of water vapor onto electrowetting‐functionalized surfaces is studied with structured co‐planar electrodes. A detailed analysis of the experimental distribution of millions of drops reveals that despite the presence of contact angle hysteresis and the occurrence of random drop coalescence events, the preferential drop positions closely follow the numerically calculated local minima of the electrostatic energy for variable drop size. Even subtle transitions between competing preferred locations are properly reproduced by the model. Based on this quantitative understanding of the condensation patterns, a series of important follow‐up steps that need to be taken to demonstrate a reliable performance gain in various applications focusing in particular on enhanced heat transfer is discussed.

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A State-of-the-Art Review of Compact Vapor Compression Refrigeration Systems and Their Applications

Cited by 61 publications

References 38 publications

Flow Boiling in Micro-Passages: Developments in Fundamental Aspects and Applications

Flow Boiling in Micro-Passages: Developments in Fundamental Aspects and Applications

Development and experimental study of the characteristics of a prototype miniature vapor compression refrigerator

Electrowetting‐Controlled Dropwise Condensation with Patterned Electrodes: Physical Principles, Modeling, and Application Perspectives

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