Correlations for estimating critical heat flux (CHF) of nanofluid flow boiling

DolatiAsl, K.; Bakhshan, Y.; Abedini, Ehsan; Niazi, Saeid

doi:10.1016/j.ijheatmasstransfer.2019.04.146

Cited by 15 publications

(7 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…So, there is less fluctuation in the measuring parameters like flow rate, system pressure, wall temperature, and so on. DolatiAsl et al 76 have proposed four correlations in this paper to calculate the CHF of nanofluid in flow boiling. Here, four types of nanoparticles, that is, alumina, diamond, ZnO, and graphene oxide are considered and the base fluid is water.…”

Section: Flow Boiling Heat Transfermentioning

confidence: 99%

Nanofluid in the multiphase flow field and heat transfer: A review

Dey

Sahu

2021

Heat Trans

View full text Add to dashboard Cite

Two‐phase heat transfer is widely used in the heat transfer field, for example, condenser and evaporator in the refrigeration system, riser, and condenser in thermal power plants, and so on. The advantage of two‐phase heat transfer is that it gives a very‐high convective heat transfer coefficient compared to other modes of heat transfer. Nanofluid is a comparatively new heat transfer fluid and very popular because of its improved thermophysical properties. If nanofluid is used in a two‐phase heat transfer field, then the convective heat transfer coefficient may improve further. Nanofluids are possibly useful in many studies in two‐phase heat transfer like pool boiling heat transfer, flow boiling heat transfer, nanofluids in a microchannel, forced convective heat transfer, condensation, spray cooling, enhanced oil recovery, and so on. The effect of nanoparticles on wettability, contact angle, and nucleation sites are also reviewed in this paper. Numerical studies in two‐phase heat transfer are also reviewed and summarized in this paper. In this review, the chronological development of heat transfer in the two‐phase field is provided in a tabular form. This table covers a wide period starting Before Common Era ages until the recent addition of nanoparticles in the two‐phase heat transfer fluid.

show abstract

Section: Flow Boiling Heat Transfermentioning

confidence: 99%

Nanofluid in the multiphase flow field and heat transfer: A review

Dey

Sahu

2021

Heat Trans

View full text Add to dashboard Cite

show abstract

“…The CHF represents a state which at fewer heat fluxes, the system is at the stable and safe working conditions. 4,5 A lot of research has been done on the pool boiling, which generally leads to two types of hot surface and hot wire experiments. 6,7 Also, many researchers have presented correlations for estimating CHF of pool boiling.…”

Section: Introductionmentioning

confidence: 99%

Visualization of pool boiling and occurring critical heat flux on coiled wire

DolatiAsl

Bakhshan

Abedini

2020

Proceedings of the Institution of Mechanical Engineers, Part E:

View full text Add to dashboard Cite

Pool boiling is used in various industries and play a significant role in heat transfer. So far, multiple studies have been carried out on investigating boiling and applying heat flux on the wire. In the present paper, the boiling of the coiled wire under atmospheric pressure conditions has been investigated. The fluid temperature inside the pool is considered under both constant (equal to saturation temperature) and variable temperature conditions. The value of the ring density in the coiled wire is considered to be variable. Based on the results, changing the pool liquid temperature changes bubble departure diameter and frequency. Also, increasing the density of the coil ring increases the diameter of bubbles. It has been observed that the bubbles are usually formed inside the coil, and after moving to the two ends of the coil, they leave the coil. However, by increasing the amount of heat flux and the pool liquid temperature, the size of bubbles will be larger; therefore, the bubbles must leave the coil from the empty spaces between the rings. By increasing the amount of applied heat flux, the coil was enclosed in a layer of vapor, which results in a decrease in the amount of heat transfer coefficient, and finally, a sudden increase in temperature on the wire will occur, which indicates the critical heat flux. Also, it has been observed that the critical heat flux always arises in the coil region of wire and not in the straight part of the wire.

show abstract

“…Boiling can lead to the improved thermal performance of different sectors in industries and plant processes. 8,9 Boiling flow has two different flow regimes. Subcooled boiling is one of them capable of creating a very high heat transfer and is capable of producing good working conditions in different parts of the industries.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of flow boiling of refrigerant-based nanofluids and proposing correlations for heat transfer

Abedini

Karachi

Jahromi

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part E:

View full text Add to dashboard Cite

The numerical simulation of subcooled flow boiling of R-113 working fluid has been done for two different nanofluids (R-113/Al2O3, R-113/TiO2) under different volume concentrations (0.5%, 1%, and 3%). The numerical results were compared with experimental results obtained by previous researchers, and the comparison shows that the numerical results are in good accordance. Nucleation site density, bubble departure frequency, and bubble departure diameter, which are three key parameters, are investigated in this study. The results express that these three parameters have the highest variation at low Reynolds numbers. The influence of different nanoparticles concentrations on the variation of the heat transfer coefficient is studied. The results indicate there is an insignificant difference between the effect of 1% and 3% concentrations on the heat transfer coefficient that means an increase of nanoparticles more than 1% concentration cannot improve heat transfer. The effect of different non-drag forces such as lubrication force, turbulent dispersion force, and lift force is also studied. Two correlations are proposed for predicting the convective heat transfer coefficient.

show abstract

Correlations for estimating critical heat flux (CHF) of nanofluid flow boiling

Cited by 15 publications

References 29 publications

Nanofluid in the multiphase flow field and heat transfer: A review

Nanofluid in the multiphase flow field and heat transfer: A review

Visualization of pool boiling and occurring critical heat flux on coiled wire

Numerical investigation of flow boiling of refrigerant-based nanofluids and proposing correlations for heat transfer

Contact Info

Product

Resources

About