Thermal performance and flow pattern of an immersion spray array cooling vapor chamber

An immersion spray array cooling vapor chamber (ISVC) is proposed for high-power electronic devices. Experimental and numerical studies on thermal performance and flow pattern have been conducted. It is shown that increasing the inlet temperature of the coolant facilitates the heat transfer performa...

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Main Authors: Yi, Li, Duan, Fei, Pan, Minqiang
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2023
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Online Access:https://hdl.handle.net/10356/170670
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1706702023-09-25T08:18:18Z Thermal performance and flow pattern of an immersion spray array cooling vapor chamber Yi, Li Duan, Fei Pan, Minqiang School of Mechanical and Aerospace Engineering Engineering::Mechanical engineering Spray Cooling Vapor Chamber An immersion spray array cooling vapor chamber (ISVC) is proposed for high-power electronic devices. Experimental and numerical studies on thermal performance and flow pattern have been conducted. It is shown that increasing the inlet temperature of the coolant facilitates the heat transfer performance and temperature uniformity of the ISVC within the safe working temperature range of electronic devices. The immersed spray impingement process includes a stage of velocity reduction from the nozzle exit to the target surface, a process of velocity boundary layer formation on the target surface, and a flow collision region formation process of adjacent sprays. As the inlet flow rate increases, the effect of the spray on the target surface is enhanced and the interaction between adjacent sprays is stronger. The perturbation effect of the spray on the fluid in the impingement cavity is positively influenced by the inlet flow rate. The spray array has a strong stirring effect on the water in the spray chamber in the XY, XZ and YZ planes. The heat transfer capacity of the ISVC is enhanced with a larger inlet flow rate due to the enhanced spray effect and larger spray coverage area. The temperature uniformity of the ISVC is improved with an increase of flow rate. The ISVC operating limit heating powers of 2.0 L/min, 4.0 L/min and 7.0 L/min flow rates are 531 W, 575 W and 600 W. Compared to the existing integrated heat sink combined vapor chamber and array jet impingement, the operating limit heating power of ISVC is increased by at least 68%. This research was supported by National Natural Science Foundation of Guangdong, China, No.2022A1515011911. Thanks for the financial support from the program of China Scholarships Council (CSC No. 202106150067). 2023-09-25T08:18:17Z 2023-09-25T08:18:17Z 2023 Journal Article Yi, L., Duan, F. & Pan, M. (2023). Thermal performance and flow pattern of an immersion spray array cooling vapor chamber. International Journal of Heat and Mass Transfer, 202, 123737-. https://dx.doi.org/10.1016/j.ijheatmasstransfer.2022.123737 0017-9310 https://hdl.handle.net/10356/170670 10.1016/j.ijheatmasstransfer.2022.123737 2-s2.0-85145597969 202 123737 en International Journal of Heat and Mass Transfer © 2022 Elsevier Ltd. All rights reserved.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Mechanical engineering
Spray Cooling
Vapor Chamber
spellingShingle Engineering::Mechanical engineering
Spray Cooling
Vapor Chamber
Yi, Li
Duan, Fei
Pan, Minqiang
Thermal performance and flow pattern of an immersion spray array cooling vapor chamber
description An immersion spray array cooling vapor chamber (ISVC) is proposed for high-power electronic devices. Experimental and numerical studies on thermal performance and flow pattern have been conducted. It is shown that increasing the inlet temperature of the coolant facilitates the heat transfer performance and temperature uniformity of the ISVC within the safe working temperature range of electronic devices. The immersed spray impingement process includes a stage of velocity reduction from the nozzle exit to the target surface, a process of velocity boundary layer formation on the target surface, and a flow collision region formation process of adjacent sprays. As the inlet flow rate increases, the effect of the spray on the target surface is enhanced and the interaction between adjacent sprays is stronger. The perturbation effect of the spray on the fluid in the impingement cavity is positively influenced by the inlet flow rate. The spray array has a strong stirring effect on the water in the spray chamber in the XY, XZ and YZ planes. The heat transfer capacity of the ISVC is enhanced with a larger inlet flow rate due to the enhanced spray effect and larger spray coverage area. The temperature uniformity of the ISVC is improved with an increase of flow rate. The ISVC operating limit heating powers of 2.0 L/min, 4.0 L/min and 7.0 L/min flow rates are 531 W, 575 W and 600 W. Compared to the existing integrated heat sink combined vapor chamber and array jet impingement, the operating limit heating power of ISVC is increased by at least 68%.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Yi, Li
Duan, Fei
Pan, Minqiang
format Article
author Yi, Li
Duan, Fei
Pan, Minqiang
author_sort Yi, Li
title Thermal performance and flow pattern of an immersion spray array cooling vapor chamber
title_short Thermal performance and flow pattern of an immersion spray array cooling vapor chamber
title_full Thermal performance and flow pattern of an immersion spray array cooling vapor chamber
title_fullStr Thermal performance and flow pattern of an immersion spray array cooling vapor chamber
title_full_unstemmed Thermal performance and flow pattern of an immersion spray array cooling vapor chamber
title_sort thermal performance and flow pattern of an immersion spray array cooling vapor chamber
publishDate 2023
url https://hdl.handle.net/10356/170670
_version_ 1779156273688739840