Abstract
This paper investigates pool-boiling heat transfer using surface modification, examining smooth and rough pin-finned surfaces on copper and aluminum. The study visualizes bubble formation and departure diameter, aiming to predict heat transfer coefficients (HTC) under different heat fluxes (HF). Four surfaces were tested: smooth copper, pin-fin copper, smooth aluminum, and rough pin-finned aluminum. Results reveal differences in bubble characteristics and formation/departure times between smooth and rough surfaces. For example, on smooth copper, bubble diameter sizes (low, medium, and CHF) were 0.2803 cm, 0.437 cm, and 0.67 cm, with corresponding formation and departure times of 0.2859 s, 0.305 s, and 0.4025 s. Pin-finned copper surfaces exhibited larger diameters (0.745 cm, 1.38 cm, 1.95 cm) and shorter times (0.184 s, 0.207 s, 0.417 s). Smooth aluminum surface had diameters (0.63 cm, 0.96 cm, 1.27 cm) and times (0.27s, 0.36s, 0.40s), while pin-finned aluminum showed sizes (0.24 cm, 0.30 cm, 0.83 cm) and times (0.11 s, 0.13 s, 0.21 s). The study concludes that rough pin-finned copper enhances boiling HTC and HF at lower wall superheat temperatures compared to the smooth surface. Keywords: Pool boiling, heat transfer, bubble dynamics, critical heat flux.
Original language | English |
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Title of host publication | Proceedings of the ICSDI 2024 - Proceedings of the 2nd International Conference on Sustainability |
Subtitle of host publication | Developments and Innovations |
Editors | Yasser Mansour, Umashankar Subramaniam, Zahiraniza Mustaffa, Abdelhakim Abdelhadi, Mohamed Ezzat, Eman Abowardah |
Publisher | Springer Science and Business Media Deutschland GmbH |
Pages | 33-40 |
Number of pages | 8 |
ISBN (Print) | 9789819787111 |
DOIs | |
Publication status | Published - 2025 |
Externally published | Yes |
Event | 2nd International Conference on Sustainability: Developments and Innovations, ICSDI 2024 - Riyadh, Saudi Arabia Duration: 18 Feb 2024 → 22 Feb 2024 |
Publication series
Name | Lecture Notes in Civil Engineering |
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Volume | 556 LNCE |
ISSN (Print) | 2366-2557 |
ISSN (Electronic) | 2366-2565 |
Conference
Conference | 2nd International Conference on Sustainability: Developments and Innovations, ICSDI 2024 |
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Country/Territory | Saudi Arabia |
City | Riyadh |
Period | 18/02/24 → 22/02/24 |
Bibliographical note
Publisher Copyright:© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.