| _version_ | 1866902299553562624 |
|---|---|
| author | Eltayeb, Ahmed |
| author_facet | Eltayeb, Ahmed |
| contents | <p>Driven by the growing cost of domestic heating and the rising fuel price, this work looks at surfactant solution-based energy-efficient heat transfer fluids using nanofluids. Particularly silicone-based surfactant (low molecular weight ethoxylated polydimethylsiloxane) that have shown encouraging effects in lowering energy consumption for domestic heating. This work complements the aim of the UK to have zero emissions from residential buildings by 2050, a sector that today makes 17% of all national greenhouse gas emissions. The goal of this work was to create several new Nano fluids for enhancing built environments' energy efficiency. The work was successful with taking research from lab formulation, through modelling and finally the formulated product for real build environment of two council building heat systems. Under turbulent flow conditions in small-diameter pipes, the thermophysical performance of several nanofluid formulations including nanoparticles such silica, alumina, and graphene oxide suspended in base fluids such as water and ethylene glycol was investigated in this work. Heat transfer properties were assessed using computational fluid dynamics (CFD) simulations, with a focus towards Nusselt number. Raman spectroscopy, dynamic light scattering (DLS), scanning transmission electron microscopy (STEM), and X-ray diffraction (XRD) were used in comprehensive characterisation of the nanofluids and their component nanoparticles. These studies gave understanding of structural integrity, particle dispersion, and morphology. Further in-lab development of thermal conductivity instrument provided an iteration toward effective formulation component for heat transfer application. In summary from our result the most effective formulation component was alumina nanofluid and silicone as surfactant. An important result of this work was the creation of a silicone-based heat transfer fluid, tested in situ in association with Bradford and Durham councils. As Chapter 7 goes into depth resulting with up to >20% of energy saving, so a possible major impact. </p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_16276056 |
| institution | Zenodo |
| language | eng |
| publishDate | 2025 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Heat transfer fluids for the enhancement of heating energy applications Eltayeb, Ahmed <p>Driven by the growing cost of domestic heating and the rising fuel price, this work looks at surfactant solution-based energy-efficient heat transfer fluids using nanofluids. Particularly silicone-based surfactant (low molecular weight ethoxylated polydimethylsiloxane) that have shown encouraging effects in lowering energy consumption for domestic heating. This work complements the aim of the UK to have zero emissions from residential buildings by 2050, a sector that today makes 17% of all national greenhouse gas emissions. The goal of this work was to create several new Nano fluids for enhancing built environments' energy efficiency. The work was successful with taking research from lab formulation, through modelling and finally the formulated product for real build environment of two council building heat systems. Under turbulent flow conditions in small-diameter pipes, the thermophysical performance of several nanofluid formulations including nanoparticles such silica, alumina, and graphene oxide suspended in base fluids such as water and ethylene glycol was investigated in this work. Heat transfer properties were assessed using computational fluid dynamics (CFD) simulations, with a focus towards Nusselt number. Raman spectroscopy, dynamic light scattering (DLS), scanning transmission electron microscopy (STEM), and X-ray diffraction (XRD) were used in comprehensive characterisation of the nanofluids and their component nanoparticles. These studies gave understanding of structural integrity, particle dispersion, and morphology. Further in-lab development of thermal conductivity instrument provided an iteration toward effective formulation component for heat transfer application. In summary from our result the most effective formulation component was alumina nanofluid and silicone as surfactant. An important result of this work was the creation of a silicone-based heat transfer fluid, tested in situ in association with Bradford and Durham councils. As Chapter 7 goes into depth resulting with up to >20% of energy saving, so a possible major impact. </p> |
| title | Heat transfer fluids for the enhancement of heating energy applications |
| url | https://doi.org/10.5281/zenodo.16276056 |