Executive Summary : | Boiling heat transfer is a crucial process in various industrial applications, including boiler tubes, evaporators, cooling electronic chips, and nuclear power plant reactors. surface modifications and fluid properties are the main methods for enhancing heat transfer phenomena. superhydrophobic surfaces are particularly useful for small compact zones, such as electronic chip cooling and microchannels. Adding nanoparticles to enhance thermal conductivity of fluids is another common method. Recent techniques involve addressing the proper mixing of nanofluids in a channel by creating a swirling flow path induced by an external magnetic field. This research focuses on the study of external magnetic fields using magnetically actuated nanoparticles. However, much research has not visualized the flow boiling behavior of these nanofluids. The data available in literature is mostly from pool boiling, and flow boiling information is limited due to microchannel design. strong magnetic fields in the boiling process can block fluids and increase frictional power. However, strong magnetic fields in the boiling process have become attractive for research involving flow boiling behavior and heat transfer enhancement using ferrofluids with a controlling frequency of an external magnetic field. This project aims to develop a comprehensive understanding of the flow boiling behavior of ferrofluids in channels over a range of flow, positioning of an electromagnet, and controlling frequency of electromagnetic strength. |