Fundamental Issues, Technology Development, and Challenges of Boiling Heat Transfer, Critical Heat Flux, and Two-Phase Flow Phenomena with Nanofluids

Cheng, Lixin; Li, Qinling; Thome, John R.

doi:10.1080/01457632.2018.1470285

Cited by 37 publications

(6 citation statements)

References 143 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…All article reviewers said that nanofluids is a complicated phenomenon and it is not fully understood from mechanism of boiling heat transfer and twophase flow. Collected studies show enhancement in CHF, and its improvement could achieve more than 50% [49]. HTC behavior could increase or decrease during flow boiling and pool, and it depends on several parameters related to surface texture on thermophysical properties [50].…”

Section: Fluid Flow and Heat Transfer Mechanismmentioning

confidence: 99%

Equation of State

Mansour¹

2020

Inverse Heat Conduction and Heat Exchangers

View full text Add to dashboard Cite

An equation of state (EOS) is a thermodynamic expression that relates pressure (P), temperature (T), and volume (V). This equation is used to describe the state of reservoir fluids at given conditions. The cubic equations of state (CEOS) such as Van der Waals, Redlich-Kwong, Soave, and Peng-Robinson are simple models that have been widely used in the oil industry. This chapter expressed literature for EOS that varies from simple expressions to multiple constant and convoluted types of equations. Many attempts have been made to describe the thermodynamic behavior of fluids to predict their physical properties at given conditions. So, several forms of the equation of state have been presented to the oil industry in order to calculate reservoir fluid properties. The heat exchanger is important in wildly fields as in aerospace, petrochemical industry, refrigeration, and other fields. The optimization design of the heat exchanger is a great significance to industry process to reduce production cost, realize energy conservation, and reduce energy consumption.

show abstract

Section: Fluid Flow and Heat Transfer Mechanismmentioning

confidence: 99%

Equation of State

Mansour¹

2020

Inverse Heat Conduction and Heat Exchangers

View full text Add to dashboard Cite

show abstract

“…Cheng et al [28] presented a critical and comprehensive review of the topic of boiling heat transfer by using nanofluids. Their discussion focused on the nucleate pool boiling, flow boiling heat transfer as well as the CHF phenomenon with two phases during the boiling process.…”

Section: Recent Review Papers Related To the Boiling Of Nanofluidsmentioning

confidence: 99%

Experimental studies of flow boiling heat transfer by using nanofluids

Kamel

Lezsovits

Hussein

2019

J Therm Anal Calorim

View full text Add to dashboard Cite

Flow boiling heat transfer widely utilized in numerous industrial applications such as boiler tubes, evaporators and cooling of reactors in a nuclear power plant. Nanofluids are a new category of thermal fluids, made by dispersing a nanometer solid particle which is usually less than 100 nm into conventional liquids such as water, oil engine and ethylene glycol with the intent to enhance the thermal properties of the base fluids. This work reviews the recent experimental studies focusing on the flow boiling heat transfer using nanofluids. The latest results associated with this subject are presented and outlined to account the influence of several parameters, which are related to operating conditions and nanoparticles morphology on the heat transfer coefficient and the critical heat flux. Besides, the effects of nanoparticles on other related sub-phenomenon of the flow boiling by using nanofluids were discussed. Moreover, the latest review papers of the related topic were presented and briefly discussed. Finally, suggestions for future research activities related to this field were also concisely listed.

show abstract

“…Similarly, the numerical investigation of Sui et al [25] indicated that the Nusselt number increases 1.71~2.95 times when the microchannel configuration changes from straight to wavy, meanwhile the pressure drop increases 1.38~2 times. On the other hand, flow boiling is another potential way to enhance the cooling performance of a microchannel heat sink, owing to the full utilization of the coolant's sensible and latent heat [26]. Unfortunately, it undergoes many shortcomings such as the temperature overshoot, accumulation of bubble layer, high pressure drop, and flow instabilities (including flow fluctuations, flow reversal, partial dry out, etc.)…”

Section: Introductionmentioning

confidence: 99%

Microscopic Exploration of Liquid-liquid Phase Separation Mechanism in LCST Solutions

Ding¹,

Feng²,

Yuan³

et al. 2022

ES Energy Environ.

View full text Add to dashboard Cite

A partially miscible solution with a lower critical solution temperature (LCST) is a potential coolant for microchannel heat sinks to meet the multi-goals of high cooling performance, low-pressure drop and stable operation. However, it is a great challenge to fundamentally understand the liquid-liquid phase separation mechanism, and to harvest benefits from it for evaluating the cooling performance and regulating the flow pattern of the LCST solutions in microchannels. Here, we observed and explained the liquid-liquid phase separation behaviors of 2-Butoxyethanol/water solutions with various mass fractions (ωp) and heating rates, consisting of spinodal decomposition or nucleation, droplet growth (diffusion-driven), and droplet coalescence (convectiondriven, stage Ⅰ and stage Ⅱ). The results proved that the separated molecular cluster is covered with a layer of water molecules, causing the mass fraction of 2-Butoxyethanol in the separated liquid to be 65.4% instead of 100%. To keep a mist or droplet flow pattern in microchannels, some efforts must be made to reduce the droplet diameter and suppress the droplet coalescence in stage Ⅱ. Although the solutions with better cooling performance have been determined at ωp=27.4%~35%, future works should focus on whether the liquid-liquid phase separation ends at the droplet growth stage or coalescence stage.

show abstract

Fundamental Issues, Technology Development, and Challenges of Boiling Heat Transfer, Critical Heat Flux, and Two-Phase Flow Phenomena with Nanofluids

Cited by 37 publications

References 143 publications

Equation of State

Equation of State

Experimental studies of flow boiling heat transfer by using nanofluids

Microscopic Exploration of Liquid-liquid Phase Separation Mechanism in LCST Solutions

Contact Info

Product

Resources

About