An experimental study of mass transfer rate from the simple levels of water surface for forced and mixed convection regimes

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Mamouri A. R.; Jodat A.

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Journal: JOURNAL OF MECHANICAL ENGINEERING Year:2020 | Volume:49 | Issue:4 (89) Page(s): 249-255

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Title

An experimental study of mass transfer rate from the simple levels of water surface for forced and mixed convection regimes

Author(s)

Mamouri A. R. | Jodat A. | Issue Writer Certificate

Keywords

vapor rate

flow regime

forced convection

mixed convection

free convection

Abstract

In the present study, a series of experimental measurements are carried out over a wide range of water temperatures and air velocities. This relatively wide range of 0. 01 ≤ ≤ 100 was produced using air average velocities of, 0. 1, 0. 3, 0. 9, 2, 4, 5, and 6 m/s and the water temperatures from 20 to 55 ℃ . The Investigations show that the evaporation rate strongly depends on the flow regimes. The results show that the evaporation rate increases with the difference in vapor pressures over both forced convection(0. 01 ≤ Gr Re ≤ 0. 1), and turbulent mixed convection regimes(0. 15 ≤ Gr Re ≤ 25). However, the escalation rate of evaporation, decreases with in the forced convection regime, whereas in the turbulent mixed convection it increases. In addition, over the range of the free convection regime Gr Re > 25 , the evaporation rate is affected not only by the vapor pressure difference but also by the density variation.

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APA: Copy

Mamouri, A. R., & Jodat, A.. (2020). An experimental study of mass transfer rate from the simple levels of water surface for forced and mixed convection regimes. JOURNAL OF MECHANICAL ENGINEERING, 49(4 (89) ), 249-255. SID. https://sid.ir/paper/269906/en

Vancouver: Copy

Mamouri A. R., Jodat A.. An experimental study of mass transfer rate from the simple levels of water surface for forced and mixed convection regimes. JOURNAL OF MECHANICAL ENGINEERING[Internet]. 2020;49(4 (89) ):249-255. Available from: https://sid.ir/paper/269906/en

IEEE: Copy

A. R. Mamouri, and A. Jodat, “An experimental study of mass transfer rate from the simple levels of water surface for forced and mixed convection regimes,” JOURNAL OF MECHANICAL ENGINEERING, vol. 49, no. 4 (89) , pp. 249–255, 2020, [Online]. Available: https://sid.ir/paper/269906/en

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