Spray Cooling Heat Transfer of a Two-Fluid Spray AtomizerSource: ASME Journal of Heat and Mass Transfer:;2024:;volume( 146 ):;issue: 005::page 52302-1DOI: 10.1115/1.4064686Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The paper presents an experimental study on the droplet size and velocity, as well as temperature distribution, of a two-fluid atomizer (dj = 1.6 mm; spray nozzle exit diameter) through optical nonintrusive interferometric particle image (IPI) and particle image velocimetry (PIV) measurements with five different air–liquid ratios (Rs) at three spray heights with three target-plate initial temperatures. Cold flow visualization was made for the spray height of 50 mm at 25 °C. The Saunter-mean diameter (d32) was measured at the target temperature of 25 °C without heating and found to be in the range of 34.22 μm to 42.62 μm in terms of a correlation with WedjRedj. The measured impact velocity at the spray height of 50 mm was of 10 m/s to 30 m/s with three different initial target temperatures. It was found that the impact velocity displayed a strong function of the initial temperature. Furthermore, both the cooling curve and transient boiling curve were obtained with the identified cooling/boiling parameters of the cooling rate, critical heat flux (CHF), Leidenfrost temperature (LFT), as well as the onset of nucleate boiling (ONB). The best cooling performance was found at R = 0.242 for a spray height of 50 mm with the corresponding cooling rate of −19.1 °C/s, CHF of 486 W/cm2, and heat transfer coefficient (HTC) of 2.85 W/cm2K.
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contributor author | Hsieh, Shou-Shing | |
contributor author | Huang, Ching-Feng | |
contributor author | Lin, Jhen | |
contributor author | Chen, Yu-Ru | |
date accessioned | 2024-04-24T22:29:01Z | |
date available | 2024-04-24T22:29:01Z | |
date copyright | 3/4/2024 12:00:00 AM | |
date issued | 2024 | |
identifier issn | 2832-8450 | |
identifier other | ht_146_05_052302.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4295305 | |
description abstract | The paper presents an experimental study on the droplet size and velocity, as well as temperature distribution, of a two-fluid atomizer (dj = 1.6 mm; spray nozzle exit diameter) through optical nonintrusive interferometric particle image (IPI) and particle image velocimetry (PIV) measurements with five different air–liquid ratios (Rs) at three spray heights with three target-plate initial temperatures. Cold flow visualization was made for the spray height of 50 mm at 25 °C. The Saunter-mean diameter (d32) was measured at the target temperature of 25 °C without heating and found to be in the range of 34.22 μm to 42.62 μm in terms of a correlation with WedjRedj. The measured impact velocity at the spray height of 50 mm was of 10 m/s to 30 m/s with three different initial target temperatures. It was found that the impact velocity displayed a strong function of the initial temperature. Furthermore, both the cooling curve and transient boiling curve were obtained with the identified cooling/boiling parameters of the cooling rate, critical heat flux (CHF), Leidenfrost temperature (LFT), as well as the onset of nucleate boiling (ONB). The best cooling performance was found at R = 0.242 for a spray height of 50 mm with the corresponding cooling rate of −19.1 °C/s, CHF of 486 W/cm2, and heat transfer coefficient (HTC) of 2.85 W/cm2K. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Spray Cooling Heat Transfer of a Two-Fluid Spray Atomizer | |
type | Journal Paper | |
journal volume | 146 | |
journal issue | 5 | |
journal title | ASME Journal of Heat and Mass Transfer | |
identifier doi | 10.1115/1.4064686 | |
journal fristpage | 52302-1 | |
journal lastpage | 52302-14 | |
page | 14 | |
tree | ASME Journal of Heat and Mass Transfer:;2024:;volume( 146 ):;issue: 005 | |
contenttype | Fulltext |