Year: 2024
Type: article
Abstract: This study investigates the effects of vibration-assisted laser surface textures (VALS) and laser surface textures (LS) on boiling heat transfer in a minichannel. Various laser-textured surfaces were created and applied to study the flow of boiling FC-72 in a single minichannel. Infrared thermography was used to measure temperature changes on the untextured side of the foil, while two-phase flow patterns were observed through a glass pane. The heated textured surfaces in contact with the fluid in the minichannels varied in roughness. Experimental results were pre-sented as relationships between heated wall temperature, heat transfer coefficient and distance along the minichannel, boiling curves, and flow patterns. It was noticed that the #LS5 surfaces achieved the highest local heat transfer coefficient in the subcooled boiling region, while the #LS4 surfaces performed best in the saturated boiling region compared to all other surfaces, considering the results obtained at the same value of heat flux supplied to the heated wall.
Source: Energies
DOI: 10.3390/en17246481
Authors: Kinga Strąk, Magdalena Piasecka
Institution: Kielce University of Technology
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,955
OpenAlex ID: W4405706640