Temperature Difference with Respect to Exposure Time for Black Paint and Galena Powder-Black Paint Composite Selective Surfaces
| Autor: | Iessa Sabbe Moosa, Bashar Bassam Maqableh |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Scanning electron microscope 020209 energy Composite number chemistry.chemical_element 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Microstructure Selective surface chemistry Aluminium Galena 0202 electrical engineering electronic engineering information engineering engineering Particle size Ingot Composite material 0210 nano-technology |
| Zdroj: | Transition Towards 100% Renewable Energy ISBN: 9783319698434 |
| Popis: | Galena Powder-Black Paint Composite as a selective surface for water heating system by solar energy has been studied. The Galena powder was prepared from a bulk ingot of Galena. Three selective surfaces, pure aluminum, black paint, and Galena Powder-Black Paint Composite with Galena powder having particle size range of about greater than 65–125 μm at 10 wt%, were conducted. The relation of the water temperature with exposure time showed a maximum value of about 99 °C by using double glassing front side box. Temperature difference (ΔT) as a function of exposure time has been studied pertaining to the plain black paint and Galena Powder-Black Paint Composite. The results showed that the relationship between ΔT and the exposure time was almost natural logarithm with different starting temperatures. In addition, microstructure of the used Galena was investigated by using scanning electron microscope (SEM). |
| Databáze: | OpenAIRE |
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