Heat transfer and two-phase flow of deionized water in heat sink with micro-pin fins
Numerous studies have focused on maximizing heat dissipation from compact surfaces due to advancements in microfabrication technology. Progress in the field requires efficient methods for thermal management, encompassing both single-phase and two-phase heat transfer in flow and pool boiling. Surface...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-09-01
|
| Series: | Results in Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123025024491 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849237466067763200 |
|---|---|
| author | Ariany Pereira Moreira Arthur Gomes da Silva Vilaronga Jeferson Diehl de Oliveira Elaine Maria Cardoso |
| author_facet | Ariany Pereira Moreira Arthur Gomes da Silva Vilaronga Jeferson Diehl de Oliveira Elaine Maria Cardoso |
| author_sort | Ariany Pereira Moreira |
| collection | DOAJ |
| description | Numerous studies have focused on maximizing heat dissipation from compact surfaces due to advancements in microfabrication technology. Progress in the field requires efficient methods for thermal management, encompassing both single-phase and two-phase heat transfer in flow and pool boiling. Surface modifications, such as extended structures, are promising ways to enhance heat transfer efficiency. Among these modifications, pin fin heat sinks have been extensively researched, offering improved heat transfer through surface area augmentation and enhancement of fluid-solid interactions. In this context, the current study analyzes how the geometry and arrangement of micro-pin fins influence the thermal and fluid dynamic behavior during the two-phase flow of deionized water. The square micro-pin fins have a width of 300 μm, a height of 350 μm, and an inter-fin spacing of 250 μm and were manufactured on a copper substrate. For comparison purposes, a single-channel heat sink was also experimentally analyzed. Two-phase flow tests were conducted over a wide range of input heat power, with different mass velocities (1000 and 1200 kg/m²s) and at different inlet subcooling (10 and 20°C). The results showed that, independently of the geometry and arrangement, the micro-pin fins affect the fluid flow behavior and, consequently, heat transfer performance. Regarding the heat transfer coefficient, an average augmentation of 47 % is observed for the micro-pin fins heat sinks compared to the single-channel one. |
| format | Article |
| id | doaj-art-35f183812d1e45ab9cbbb5b71e18ab38 |
| institution | Kabale University |
| issn | 2590-1230 |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj-art-35f183812d1e45ab9cbbb5b71e18ab382025-08-20T04:01:57ZengElsevierResults in Engineering2590-12302025-09-012710637810.1016/j.rineng.2025.106378Heat transfer and two-phase flow of deionized water in heat sink with micro-pin finsAriany Pereira Moreira0Arthur Gomes da Silva Vilaronga1Jeferson Diehl de Oliveira2Elaine Maria Cardoso3UNESP - São Paulo State University, School of Engineering of Ilha Solteira, Av. Brasil, 56, Ilha Solteira, SP 15385-000, BrazilUNESP - São Paulo State University, School of Engineering of Ilha Solteira, Av. Brasil, 56, Ilha Solteira, SP 15385-000, BrazilUNESP - São Paulo State University, School of Engineering of São João da Boa Vista, Av. Profª Isette Corrêa Fontão, 505, São João da Boa Vista, SP 13876-750, BrazilUNESP - São Paulo State University, School of Engineering of Ilha Solteira, Av. Brasil, 56, Ilha Solteira, SP 15385-000, Brazil; UNESP - São Paulo State University, School of Engineering of São João da Boa Vista, Av. Profª Isette Corrêa Fontão, 505, São João da Boa Vista, SP 13876-750, Brazil; Corresponding author.Numerous studies have focused on maximizing heat dissipation from compact surfaces due to advancements in microfabrication technology. Progress in the field requires efficient methods for thermal management, encompassing both single-phase and two-phase heat transfer in flow and pool boiling. Surface modifications, such as extended structures, are promising ways to enhance heat transfer efficiency. Among these modifications, pin fin heat sinks have been extensively researched, offering improved heat transfer through surface area augmentation and enhancement of fluid-solid interactions. In this context, the current study analyzes how the geometry and arrangement of micro-pin fins influence the thermal and fluid dynamic behavior during the two-phase flow of deionized water. The square micro-pin fins have a width of 300 μm, a height of 350 μm, and an inter-fin spacing of 250 μm and were manufactured on a copper substrate. For comparison purposes, a single-channel heat sink was also experimentally analyzed. Two-phase flow tests were conducted over a wide range of input heat power, with different mass velocities (1000 and 1200 kg/m²s) and at different inlet subcooling (10 and 20°C). The results showed that, independently of the geometry and arrangement, the micro-pin fins affect the fluid flow behavior and, consequently, heat transfer performance. Regarding the heat transfer coefficient, an average augmentation of 47 % is observed for the micro-pin fins heat sinks compared to the single-channel one.http://www.sciencedirect.com/science/article/pii/S2590123025024491Flow boilingMicro-pin finsSurface modificationThermal management |
| spellingShingle | Ariany Pereira Moreira Arthur Gomes da Silva Vilaronga Jeferson Diehl de Oliveira Elaine Maria Cardoso Heat transfer and two-phase flow of deionized water in heat sink with micro-pin fins Results in Engineering Flow boiling Micro-pin fins Surface modification Thermal management |
| title | Heat transfer and two-phase flow of deionized water in heat sink with micro-pin fins |
| title_full | Heat transfer and two-phase flow of deionized water in heat sink with micro-pin fins |
| title_fullStr | Heat transfer and two-phase flow of deionized water in heat sink with micro-pin fins |
| title_full_unstemmed | Heat transfer and two-phase flow of deionized water in heat sink with micro-pin fins |
| title_short | Heat transfer and two-phase flow of deionized water in heat sink with micro-pin fins |
| title_sort | heat transfer and two phase flow of deionized water in heat sink with micro pin fins |
| topic | Flow boiling Micro-pin fins Surface modification Thermal management |
| url | http://www.sciencedirect.com/science/article/pii/S2590123025024491 |
| work_keys_str_mv | AT arianypereiramoreira heattransferandtwophaseflowofdeionizedwaterinheatsinkwithmicropinfins AT arthurgomesdasilvavilaronga heattransferandtwophaseflowofdeionizedwaterinheatsinkwithmicropinfins AT jefersondiehldeoliveira heattransferandtwophaseflowofdeionizedwaterinheatsinkwithmicropinfins AT elainemariacardoso heattransferandtwophaseflowofdeionizedwaterinheatsinkwithmicropinfins |