Experimental Study of the Effects of Ultrasonic Waves on Surface Sediments in Pool Boiling

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Khooshehchin m.; Ghotbinasab S.; MOHAMMADI DOUST A.

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Journal: Modares Mechanical Engineering Year:2021 | Volume:21 | Issue:5 Page(s): 315-326

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Title

Experimental Study of the Effects of Ultrasonic Waves on Surface Sediments in Pool Boiling

Author(s)

Khooshehchin m. | Ghotbinasab S. | MOHAMMADI DOUST A. | Issue Writer Certificate

Keywords

Pool BoilingQ1

Ultrasonic WavesQ1

SedimentQ2

Boiling Heat Transfer CoefficientQ2

Abstract

Increasing heat transfer and preventing Sedimentation in equipment have always attracted the engineer's attention. In this work, the variations of salt concentration were effective on bubble diameter, departure frequency, and generation points, and its Sediments acted as a heat transfer resistance. Therefore, first, the effect of Ultrasonic Waves was investigated on salt Sedimentations in Pool Boiling. The results revealed that the Ultrasonic Waves had a positive effect by suspending the soluble particles in the fluid and preventing them from precipitating on the surface of heat transfer. Increasing turbulences and perturbations improved the heat transfer coefficient due to changes in bubble dynamic and cavitation phenomenon significantly. The effect of roughness on the surface heat transfer in bubble production was another investigation of this research. Bubble production by increasing the roughness with ultrasonic wave irradiation had direct and important effects on enhancing the heat transfer. Finally, salt and nanofluid Sediments were compared. The nanoparticles precipitate faster and more easily under the bubble layer, but less in the salt solution if its dissolution is maintained. The Ultrasonic Waves were employed at three powers of 30%, 60%, and 90%. Finally, the heat transfer coefficient and bubble departure diameter increased by 8. 43% and 7. 54%, respectively. Also, the Sedimentation decreased by 37. 19%. As a result, the waves reduced their deposition by preserving salt dissolution.

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APA: Copy

Khooshehchin, m., Ghotbinasab, S., & MOHAMMADI DOUST, A.. (2021). Experimental Study of the Effects of Ultrasonic Waves on Surface Sediments in Pool Boiling. MODARES MECHANICAL ENGINEERING, 21(5 ), 315-326. SID. https://sid.ir/paper/399944/en

Vancouver: Copy

Khooshehchin m., Ghotbinasab S., MOHAMMADI DOUST A.. Experimental Study of the Effects of Ultrasonic Waves on Surface Sediments in Pool Boiling. MODARES MECHANICAL ENGINEERING[Internet]. 2021;21(5 ):315-326. Available from: https://sid.ir/paper/399944/en

IEEE: Copy

m. Khooshehchin, S. Ghotbinasab, and A. MOHAMMADI DOUST, “Experimental Study of the Effects of Ultrasonic Waves on Surface Sediments in Pool Boiling,” MODARES MECHANICAL ENGINEERING, vol. 21, no. 5 , pp. 315–326, 2021, [Online]. Available: https://sid.ir/paper/399944/en

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