Effects of a circular-shaped turbulator having varying hole numbers on energy and exergy efficiencies of a solar air heater
| Autor: | Adem Acır, İsmail Ata, M. Emin Canlı, H. Erdi Tanürün |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Exergy
Solar air heater Materials science Renewable Energy Sustainability and the Environment 020209 energy Nuclear engineering 02 engineering and technology Building and Construction Turbulator 020401 chemical engineering 0202 electrical engineering electronic engineering information engineering 0204 chemical engineering Physics::Atmospheric and Oceanic Physics Energy (signal processing) Plain tube |
| Zdroj: | International Journal of Ambient Energy. 40:739-748 |
| ISSN: | 2162-8246 0143-0750 |
| DOI: | 10.1080/01430750.2017.1423385 |
| Popis: | In this paper, the energy and exergy approach was used to evaluate the performance of a new solar air (SAH) heater. The experimental tests were performed for a plain tube, circular-shaped turbulator having varying hole numbers (HN = 2, HN = 4, HN = 6) inserted inside the tube of SAHs and air mass flow rates (), 0.0033, 0.0044 and 0.0055kg/s). The energy and exergy efficiency results obtained for various parameters in SAHs were evaluated at noon. The energy and exergy efficiencies of the plain tube of SAHs were computed as 50 +/- 0.54% and 16.8 +/- 0.54%, respectively. The energy efficiencies obtained with turbulators inserted inside the tube of SAHs for HN = 2 and 6 were computed as 58.3 +/- 0.63% and 53.7 +/- 0.59%, whereas the exergy efficiencies were calculated as 20.7 +/- 1.00% and 18.4 +/- 0.73% for = 0.0055kg/s, respectively. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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