Prediction of forced convective heat transfer and critical heat flux for subcooled water flowing in miniature tubes

The boiling heat transfer for subcooled water flowing in a small-diameter tube was investigated experimentally and numerically. In the experiment, a platinum tube was used as an experimental tube (d = 1.0–2.0 mm) to conduct joule heating by direct current. The heat generation rate of the tube was controlled with an exponential function. The numerical simulation of boiling heat transfer for subcooled water flowing in the small-diameter tube was conducted using the commercial computational fluid dynamics (CFD) code, phoenics ver. 2013. The small-diameter tube was modeled in the simulation. As the boundary condition, the measured heat flux was given at the inner wall. The inlet temperature ranged from 302 to 312 K. The flow velocities of d = 1.0 mm and d = 2.0 mm were 9.29 m/s and 2.34 m/s, respectively. The three-dimensional analysis was carried out from non-boiling to the critical heat flux (CHF). Governing equations were discretized using the finite volume method in the phoenics. The semi-implicit method for pressure linked equation (SIMPLE) method was applied in the numerical simulation. For modeling boiling phenomena in the tube, the Eulerian–Eulerian two-fluid model was adopted using the interphase slip algorithm of phoenics. The surface temperature difference increased as the heat flux increased in the experiment. The numerical simulation predicted the experimental data well. When the heat flux of the experiment reached the CHF point, the predicted value of the heat transfer coefficient was approximately 3.5% lower than that of the experiment.

show abstract

Flow Boiling Heat Transfer and Heat Conduction Analysis of High-Power Electronic Devices

Shibahara

Liu

2023

Heat Trans Res

View full text Add to dashboard Cite

A flow boiling experiment in a narrow channel was conducted using subcooled water. Moreover, the experimentally measured heat flux of the channel was applied for the heat conduction analysis of insulated gate bipolar transistors (IGBTs). The relationship between the heat flux and the temperature difference was investigated experimentally, ranging from nonboiling to boiling in the narrow tube. The boiling heat transfer in the fully nucleate boiling region was validated by comparing with the Rohsenow correlation. Moreover, the measured critical heat flux (CHF) agreed with the Hall and Mudawar correlation within ± 15%. The heat conduction analysis of an IGBT module with a heatsink was solved using the measured heat flux in the narrow channel as a boundary condition, applied from the nonboiling region to the film boiling region. The thermal resistance of the material was obtained when the heatsink with narrow channels was modeled. The numerical result indicated that the thermal resistance of the material was influenced by the heat transfer process of the cooling channel.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Prediction of forced convective heat transfer and critical heat flux for subcooled water flowing in miniature tubes

Cited by 6 publications

References 23 publications

Boiling heat transfer and CHF for subcooled water flowing in a narrow channel due to power transients

Boiling heat transfer and CHF for subcooled water flowing in a narrow channel due to power transients

Experimental and Numerical Investigations of Subcooled Boiling Heat Transfer in a Small-Diameter Tube

Flow Boiling Heat Transfer and Heat Conduction Analysis of High-Power Electronic Devices

Contact Info

Product

Resources

About