ENHANCING ENERGY HARVEST IN A CONSTRUCTAL SOLAR COLLECTOR BY USING ALUMINA-WATER AS NANOFLUID
We have developed a network of pipes of dendritic geometry in a solar collector with a disc-shaped body.The fluid in the network pipes is a nanofluid composed of a mixture of nanoparticles of alumina (Al2O3)and water as a base fluid in order to harvest a greater amount of thermal energy from incoming s...
| Autores: | , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2017 |
| País: | México |
| Institución: | Universidad Autónoma de Nayarit |
| Repositorio: | Repositorio Institucional Aramara de la UAN |
| Idioma: | inglés |
| OAI Identifier: | oai:dspace.uan.mx:123456789/1076 |
| Acceso en línea: | https://doi.org/10.1016/j.solener.2017.03.054 http://dspace.uan.mx:8080/jspui/handle/123456789/1076 |
| Access Level: | acceso abierto |
| Palabra clave: | nanofluid constructal design solar energy solar collector nanofluido diseño constructal energía solar batería solar CIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA [1] |
| Sumario: | We have developed a network of pipes of dendritic geometry in a solar collector with a disc-shaped body.The fluid in the network pipes is a nanofluid composed of a mixture of nanoparticles of alumina (Al2O3)and water as a base fluid in order to harvest a greater amount of thermal energy from incoming solarradiation. The sizes of the network pipes are obtained by using constructal theory methods. Thermal con-ductivity was obtained by the Hamilton-Crosser model; physical properties such as density and specificheat capacity were described as a function of the volumetric fraction of nanoparticles in the fluid. Optimalsize of the network presented for every level of construction was established by the condition of minimalthermal resistance. Temperature profiles and the aspect ratio of the construction elements were definedas a function of the volumetric fraction of nanoparticles. Results show that by increasing the volume frac-tion of nanoparticles, thermal energy gain also increases, reaching a higher outlet temperature of the fluidwhen alumina nanoparticles are used. |
|---|